Surgical insertion of an electronic hearing device (COCHLEAR IMPLANTS) with electrodes to the COCHLEAR NERVE in the inner ear to create sound sensation in patients with residual nerve fibers.
Electronic hearing devices typically used for patients with normal outer and middle ear function, but defective inner ear function. In the COCHLEA, the hair cells (HAIR CELLS, VESTIBULAR) may be absent or damaged but there are residual nerve fibers. The device electrically stimulates the COCHLEAR NERVE to create sound sensation.
Electric conductors through which electric currents enter or leave a medium, whether it be an electrolytic solution, solid, molten mass, gas, or vacuum.
A general term for the complete loss of the ability to hear from both ears.
Partial hearing loss in both ears.
Surgically placed electric conductors through which ELECTRIC STIMULATION is delivered to or electrical activity is recorded from a specific point inside the body.
Hearing loss resulting from damage to the COCHLEA and the sensorineural elements which lie internally beyond the oval and round windows. These elements include the AUDITORY NERVE and its connections in the BRAINSTEM.
A general term for the complete or partial loss of the ability to hear from one or both ears.
Fenestra of the cochlea, an opening in the basal wall between the MIDDLE EAR and the INNER EAR, leading to the cochlea. It is closed by a secondary tympanic membrane.
The process whereby an utterance is decoded into a representation in terms of linguistic units (sequences of phonetic segments which combine to form lexical and grammatical morphemes).
Measurement of hearing based on the use of pure tones of various frequencies and intensities as auditory stimuli.
The lower chamber of the COCHLEA, extending from the round window to the helicotrema (the opening at the apex that connects the PERILYMPH-filled spaces of scala tympani and SCALA VESTIBULI).
Part of an ear examination that measures the ability of sound to reach the brain.
Either of a pair of compound bones forming the lateral (left and right) surfaces and base of the skull which contains the organs of hearing. It is a large bone formed by the fusion of parts: the squamous (the flattened anterior-superior part), the tympanic (the curved anterior-inferior part), the mastoid (the irregular posterior portion), and the petrous (the part at the base of the skull).
Pathological processes of the VESTIBULOCOCHLEAR NERVE, including the branches of COCHLEAR NERVE and VESTIBULAR NERVE. Common examples are VESTIBULAR NEURITIS, cochlear neuritis, and ACOUSTIC NEUROMA. Clinical signs are varying degree of HEARING LOSS; VERTIGO; and TINNITUS.
The gradual expansion in complexity and meaning of symbols and sounds as perceived and interpreted by the individual through a maturational and learning process. Stages in development include babbling, cooing, word imitation with cognition, and use of short sentences.
Procedures for correcting HEARING DISORDERS.
Persons with any degree of loss of hearing that has an impact on their activities of daily living or that requires special assistance or intervention.
Hearing loss due to disease of the AUDITORY PATHWAYS (in the CENTRAL NERVOUS SYSTEM) which originate in the COCHLEAR NUCLEI of the PONS and then ascend bilaterally to the MIDBRAIN, the THALAMUS, and then the AUDITORY CORTEX in the TEMPORAL LOBE. Bilateral lesions of the auditory pathways are usually required to cause central hearing loss. Cortical deafness refers to loss of hearing due to bilateral auditory cortex lesions. Unilateral BRAIN STEM lesions involving the cochlear nuclei may result in unilateral hearing loss.
Rare disease characterized by COLOBOMA; CHOANAL ATRESIA; and abnormal SEMICIRCULAR CANALS. Mutations in CHD7 protein resulting in disturbed neural crest development are associated with CHARGE Syndrome.
The part of the inner ear (LABYRINTH) that is concerned with hearing. It forms the anterior part of the labyrinth, as a snail-like structure that is situated almost horizontally anterior to the VESTIBULAR LABYRINTH.
The audibility limit of discriminating sound intensity and pitch.
Partial or complete hearing loss in one ear.
A form of electrophysiologic audiometry in which an analog computer is included in the circuit to average out ongoing or spontaneous brain wave activity. A characteristic pattern of response to a sound stimulus may then become evident. Evoked response audiometry is known also as electric response audiometry.
The testing of the acuity of the sense of hearing to determine the thresholds of the lowest intensity levels at which an individual can hear a set of tones. The frequencies between 125 and 8000 Hz are used to test air conduction thresholds and the frequencies between 250 and 4000 Hz are used to test bone conduction thresholds.
Communication through a system of conventional vocal symbols.
The cochlear part of the 8th cranial nerve (VESTIBULOCOCHLEAR NERVE). The cochlear nerve fibers originate from neurons of the SPIRAL GANGLION and project peripherally to cochlear hair cells and centrally to the cochlear nuclei (COCHLEAR NUCLEUS) of the BRAIN STEM. They mediate the sense of hearing.
The electric response evoked in the CEREBRAL CORTEX by ACOUSTIC STIMULATION or stimulation of the AUDITORY PATHWAYS.
The ability or act of sensing and transducing ACOUSTIC STIMULATION to the CENTRAL NERVOUS SYSTEM. It is also called audition.
Surgery performed in which part of the STAPES, a bone in the middle ear, is removed and a prosthesis is placed to help transmit sound between the middle ear and inner ear.
Wearable sound-amplifying devices that are intended to compensate for impaired hearing. These generic devices include air-conduction hearing aids and bone-conduction hearing aids. (UMDNS, 1999)
The teaching or training of those individuals with hearing disability or impairment.
Ability to make speech sounds that are recognizable.
The sensory ganglion of the COCHLEAR NERVE. The cells of the spiral ganglion send fibers peripherally to the cochlear hair cells and centrally to the COCHLEAR NUCLEI of the BRAIN STEM.
The fundamental principles and laws adopted by an organization for the regulation and governing of its affairs.
Pathological processes of the VESTIBULAR LABYRINTH which contains part of the balancing apparatus. Patients with vestibular diseases show instability and are at risk of frequent falls.
Surgery performed on the external, middle, or internal ear.
A hypnotic and sedative used in the treatment of INSOMNIA.
Use of sound to elicit a response in the nervous system.
Tests designed to assess language behavior and abilities. They include tests of vocabulary, comprehension, grammar and functional use of language, e.g., Development Sentence Scoring, Receptive-Expressive Emergent Language Scale, Parsons Language Sample, Utah Test of Language Development, Michigan Language Inventory and Verbal Language Development Scale, Illinois Test of Psycholinguistic Abilities, Northwestern Syntax Screening Test, Peabody Picture Vocabulary Test, Ammons Full-Range Picture Vocabulary Test, and Assessment of Children's Language Comprehension.
Sensorineural hearing loss which develops suddenly over a period of hours or a few days. It varies in severity from mild to total deafness. Sudden deafness can be due to head trauma, vascular diseases, infections, or can appear without obvious cause or warning.
Evaluation undertaken to assess the results or consequences of management and procedures used in combating disease in order to determine the efficacy, effectiveness, safety, and practicability of these interventions in individual cases or series.
Formation of spongy bone in the labyrinth capsule which can progress toward the STAPES (stapedial fixation) or anteriorly toward the COCHLEA leading to conductive, sensorineural, or mixed HEARING LOSS. Several genes are associated with familial otosclerosis with varied clinical signs.
The language and sounds expressed by a child at a particular maturational stage in development.
Tests of the ability to hear and understand speech as determined by scoring the number of words in a word list repeated correctly.
The period following a surgical operation.
The region of the cerebral cortex that receives the auditory radiation from the MEDIAL GENICULATE BODY.
Electrodes which can be used to measure the concentration of particular ions in cells, tissues, or solutions.
Ability to determine the specific location of a sound source.
Delay in the attachment and implantation of BLASTOCYST to the uterine ENDOMETRIUM. The blastocyst remains unattached beyond the normal duration thus delaying embryonic development.
The resistance to the flow of either alternating or direct electrical current.
A nonspecific symptom of hearing disorder characterized by the sensation of buzzing, ringing, clicking, pulsations, and other noises in the ear. Objective tinnitus refers to noises generated from within the ear or adjacent structures that can be heard by other individuals. The term subjective tinnitus is used when the sound is audible only to the affected individual. Tinnitus may occur as a manifestation of COCHLEAR DISEASES; VESTIBULOCOCHLEAR NERVE DISEASES; INTRACRANIAL HYPERTENSION; CRANIOCEREBRAL TRAUMA; and other conditions.
Electrical waves in the CEREBRAL CORTEX generated by BRAIN STEM structures in response to auditory click stimuli. These are found to be abnormal in many patients with CEREBELLOPONTINE ANGLE lesions, MULTIPLE SCLEROSIS, or other DEMYELINATING DISEASES.
An acute purulent infection of the meninges and subarachnoid space caused by Streptococcus pneumoniae, most prevalent in children and adults over the age of 60. This illness may be associated with OTITIS MEDIA; MASTOIDITIS; SINUSITIS; RESPIRATORY TRACT INFECTIONS; sickle cell disease (ANEMIA, SICKLE CELL); skull fractures; and other disorders. Clinical manifestations include FEVER; HEADACHE; neck stiffness; and somnolence followed by SEIZURES; focal neurologic deficits (notably DEAFNESS); and COMA. (From Miller et al., Merritt's Textbook of Neurology, 9th ed, p111)
The study of chemical changes resulting from electrical action and electrical activity resulting from chemical changes.
Elements of limited time intervals, contributing to particular results or situations.
The process whereby auditory stimuli are selected, organized, and interpreted by the organism.
The sum or the stock of words used by a language, a group, or an individual. (From Webster, 3d ed)
Use of electric potential or currents to elicit biological responses.
Sensory cells in the organ of Corti, characterized by their apical stereocilia (hair-like projections). The inner and outer hair cells, as defined by their proximity to the core of spongy bone (the modiolus), change morphologically along the COCHLEA. Towards the cochlear apex, the length of hair cell bodies and their apical STEREOCILIA increase, allowing differential responses to various frequencies of sound.
Studies used to test etiologic hypotheses in which inferences about an exposure to putative causal factors are derived from data relating to characteristics of persons under study or to events or experiences in their past. The essential feature is that some of the persons under study have the disease or outcome of interest and their characteristics are compared with those of unaffected persons.
Insertion of an artificial lens to replace the natural CRYSTALLINE LENS after CATARACT EXTRACTION or to supplement the natural lens which is left in place.
The utilization of an electrical current to measure, analyze, or alter chemicals or chemical reactions in solution, cells, or tissues.
The essential part of the hearing organ consists of two labyrinthine compartments: the bony labyrinthine and the membranous labyrinth. The bony labyrinth is a complex of three interconnecting cavities or spaces (COCHLEA; VESTIBULAR LABYRINTH; and SEMICIRCULAR CANALS) in the TEMPORAL BONE. Within the bony labyrinth lies the membranous labyrinth which is a complex of sacs and tubules (COCHLEAR DUCT; SACCULE AND UTRICLE; and SEMICIRCULAR DUCTS) forming a continuous space enclosed by EPITHELIUM and connective tissue. These spaces are filled with LABYRINTHINE FLUIDS of various compositions.
A verbal or nonverbal means of communicating ideas or feelings.
A device designed to stimulate, by electric impulses, contraction of the heart muscles. It may be temporary (external) or permanent (internal or internal-external).
Methods of creating machines and devices.
Electrodes with an extremely small tip, used in a voltage clamp or other apparatus to stimulate or record bioelectric potentials of single cells intracellularly or extracellularly. (Dorland, 28th ed)
Studies in which individuals or populations are followed to assess the outcome of exposures, procedures, or effects of a characteristic, e.g., occurrence of disease.
The plan and delineation of prostheses in general or a specific prosthesis.
Pathologic processes that affect patients after a surgical procedure. They may or may not be related to the disease for which the surgery was done, and they may or may not be direct results of the surgery.
Persons functioning as natural, adoptive, or substitute parents. The heading includes the concept of parenthood as well as preparation for becoming a parent.
Observation of a population for a sufficient number of persons over a sufficient number of years to generate incidence or mortality rates subsequent to the selection of the study group.
The hollow thick-walled muscular organ in the female PELVIS. It consists of the fundus (the body) which is the site of EMBRYO IMPLANTATION and FETAL DEVELOPMENT. Beyond the isthmus at the perineal end of fundus, is CERVIX UTERI (the neck) opening into VAGINA. Beyond the isthmi at the upper abdominal end of fundus, are the FALLOPIAN TUBES.
Artificial substitutes for body parts, and materials inserted into tissue for functional, cosmetic, or therapeutic purposes. Prostheses can be functional, as in the case of artificial arms and legs, or cosmetic, as in the case of an artificial eye. Implants, all surgically inserted or grafted into the body, tend to be used therapeutically. IMPLANTS, EXPERIMENTAL is available for those used experimentally.
Devices that provide support for tubular structures that are being anastomosed or for body cavities during skin grafting.
The status during which female mammals carry their developing young (EMBRYOS or FETUSES) in utero before birth, beginning from FERTILIZATION to BIRTH.
Solution titration in which the end point is read from the electrode-potential variations with the concentrations of potential determining ions. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
The mucous membrane lining of the uterine cavity that is hormonally responsive during the MENSTRUAL CYCLE and PREGNANCY. The endometrium undergoes cyclic changes that characterize MENSTRUATION. After successful FERTILIZATION, it serves to sustain the developing embryo.
Criteria and standards used for the determination of the appropriateness of the inclusion of patients with specific conditions in proposed treatment plans and the criteria used for the inclusion of subjects in various clinical trials and other research protocols.
Results of partial deafness cochlear implantation using various electrode designs. Audiology neurootology, 14 Suppl 1(suppl 1 ... He performed the first operation of cochlear implantation in Poland and Central Europe in 1992, restoring hearing ability to a ... Skarzynski calls this procedure "partial deafness cochlear implantation". He later performed the same procedure on a child in ... Partial deafness cochlear implantation in children. International Journal of Pediatric Otorhinolaryngology 71(9):1407-13 (2007 ...
Well-placed electrode arrays in patients receiving cochlear implants can allow otherwise deafened auditory systems to achieve ... For individuals with sensorineural hearing loss surgical implantation of a cochlear implant is indicated. The success of a ... 2006, Wilson 2004) A typical cochlear implant electrode array may be inserted at a depth of 22-25 mm into the cochlea [1]. At ... Moreover, the Greenwood function provides the mathematical basis for cochlear implant surgical electrode array placement within ...
Campbell R, MacSweeney M, Woll B (2014-10-17). "Cochlear implantation (CI) for prelingual deafness: the relevance of studies of ... There is a greater opportunity to hear a sound depending on the location of electrodes compared to the tissue and the number of ... Research has continuously found that early implantation leads to better performance than older implantation. Studies continue ... Hearing aids and cochlear implants may make the child able to hear sounds in their hearing range-but they don't restore normal ...
... which stimulate cochlear nerve endings directly. A cochlear implant is surgical implantation of a battery powered electronic ... These consist of both internal implanted electrodes and magnets and external components. The quality of sound is different than ... In cases of profound or total deafness, a cochlear implant is a specialised hearing aid that may restore a functional level of ... Unlike hearing aids, which make sounds louder, cochlear implants do the work of damaged parts of the inner ear (cochlea) to ...
G.M. Clark, B.C. Pyman, Q.R. Bailey, The surgery for multiple-electrode cochlear implantations, The Journal of Laryngology and ... Awarded by Cochlear Limited, scholarships are presented to cochlear implant recipients around the world to help defray the ... 2003) Cochlear Implants: Fundamentals and Applications. Springer-Verlag, New York. (The first textbook on the cochlear implant ... House's device was a single electrode configuration, compared to the multiple electrode device developed by Clark. Clark's ...
... and transmit those signals to electrodes embedded in the cochlea. The electrodes electrically stimulate the cochlear nerve, ... Ramakers GG, van Zon A, Stegeman I, Grolman W (2015). "The effect of cochlear implantation on tinnitus in patients with ... In the past cochlear implants were only approved for people who were deaf in both ears; as of 2014[update] a cochlear implant ... Some Deaf activists have labeled the widespread implantation of children as a cultural genocide. As the trend for cochlear ...
... of children using the Nucleus 22-electrode cochlear implant and having an average age of 5 years at the time of implantation ... The University of Melbourne-Nucleus Multi-Electrode Cochlear Implant (Advances in Oto-Rhino-Laryngology, Vol. 38) 1987 ISBN 978 ... "Speech perception in children using cochlear implants: prediction of long-term outcomes". Cochlear Implants International. 3 (1 ... In 2006, Dowell with PhD student Mansze Mok, published a study to address the use of cochlear implants in conjunction with ...
Deroche, M.L.D.; Lu, H.-P.; Limb, C.J.; Lin, Y.-S.; Chatterjee, M. (2014). "Deficits in the pitch sensitivity of cochlear- ... exacerbated by physiological interactions in electric stimulation patterns between multiple channels of the electrode array. ... is the extraordinary neuroplasticity they exhibit during the first years of language acquisition following implantation. ... She was also a keynote speaker at the 2017 conference of the Alliance of Cochlear Implants (CI2017), She was elected Scientific ...
This number continues to grow as cochlear implantation is becoming more and more accepted. In 1961, Dr. William House began ... Sohmer and Feinmesser were the first to publish ABRs recorded with surface electrodes in humans which showed that cochlear ... The way a cochlear implant works is sound is received by the cochlear implant's microphone, which picks up input that needs to ... Currently, as of 2007, the three cochlear implant devices approved for use in the U.S. are manufactured by Cochlear, Med El, ...
... the AAMI is developing an American standard for cochlear implants in collaboration with the FDA, major cochlear implant ... Bacteria may already reside on the implant or be introduced during the implantation. Typical failure mechanisms include tissue ... The most commonly reported device failures are due to impacts, loss of hermeticity, and electrode lead malfunctions. Most ... Clinical symptoms of cochlear implant failure include auditory symptoms (tinnitus, buzzing, roaring, popping sounds), non- ...
... the cochlear implant would need several electrodes, so it could stimulate the different frequency regions on the "cochlear ... House, WF; Urban, J (1973). "Long term results of electrode implantation and electronic stimulation of the cochlea in man". Ann ... "Implantation of multiple intracochlear electrodes for rehabilitation of total deafness: preliminary report". Laryngoscope. 86: ... the Paris-based team applied the electrode implantation technique to five patients with historic bilateral total deafness. ...
Nabekura, Takashi (2015). "A case of cochlear implantation in a patient with Epstein syndrome". Auris Nasus Larynx. 42 (2): 160 ... Cochlea implants have four main parts including the electrode array, the transmitter, the receiver/stimulator and the ... ". "Cochlear Implants". 2015-08-18. Richards (1991). "Epstein syndrome: oral lesions ina patient with nephropathy,deafness and ...
... and electrode arrays. Modern cochlear implant research started in the 1960s and 1970s. In 1961, a crude single electrode device ... House WF, Urban J (1973). "Long term results of electrode implantation and electronic stimulation of the cochlea in man". Ann. ... These cochlear implant electrodes are either straight or spiral such as Med El Combi 40+ and Advanced Bionics Helix ... In cochlear implants, microelectrodes are formed from platinum-iridium alloy. State-of-the-art electrodes include deeper ...
2003) Deep electrode insertion in Cochlear implants: Apical Morphology, electrodes and speech perception results. Acta ... Kurt Burian followed by a second implantation in March 1978. Despite an early shunt in the first patient and some existing ... with multiple electrode contacts, multiple current sources (8) to drive the electrode contacts, electrode designed for round ... Psychoacoustic temporal processing and speech understanding in cochlear implant patients, Cochlear Implant, Ed.: R.A. Schindler ...
... during implantation and triggering foreign-body reaction and electrode encapsulation via silicon and metals in the electrodes. ... "Active positioning device for a perimodiolar cochlear electrode array". Microsystem Technologies. 10 (6-7): 478-483. doi: ... Microfabrication has led to the development of Michigan probes and the Utah electrode array, which have increased electrodes ... In potentiometric biosensors, measurements of electric potential at one electrode are made in reference to another electrode. ...
Hard failure rate at a major cochlear implantation center". The Laryngoscope. Wiley. Retrieved 22 June 2016. "Cochlear Nucleus ... and an electrode array that relays the sounds to the brain. It is a direct descendant of the original cochlear implants, also ... Cochlear (ASX: COH) is a medical device company that designs, manufactures and supplies the Nucleus cochlear implant, the ... "Hearing company Cochlear stakes growth on new range". Herald Sun. Retrieved 22 June 2013. "Cochlear Recalls Line of Ear ...
Electrodes can be placed into nervous tissue, and the body can be trained to control the prosthesis. This technology has been ... Cochlear implants bypass most of the peripheral auditory system to provide a sense of sound via a microphone and some ... Simmons, M.; Montague D.K. (2008). "Penile prosthesis implantation: Past, present, and future". International Journal of ... In cases when a person is profoundly deaf or severely hard of hearing in both ears, a cochlear implant may be surgically ...
Skarzynski H, Lorens A, Piotrowska A, Anderson I (2006). Partial deafness cochlear implantation provides benefit to a new ... Today only lateral wall electrodes are used. Studies with preshaped (modiolus-hugging electrodes) have been proven to be not so ... Electrodes that can be inserted to a depth of 18-22 mm are a good compromise. The insertion depth also depends on the size of ... Cochlear implant Hearing aid Brain implant ENT Dept. of the Universitätsklinik Frankfurt V. Ilberg C., Kiefer J., Tillein J., ...
These same electrodes, or derivations thereof using the same biocompatible electrode materials, are currently used in visual ... For hearing, cochlear implants are used to stimulate the auditory nerve directly. The vestibulocochlear nerve is part of the ... includes technology such as EEG arrays that allow interface between mind and machine but do not require direct implantation of ... and consistent recordings for greater than three years from the best electrodes. The "hatpin" electrodes were made of pure ...
Designed by Claude Veraart at the University of Louvain, this is a spiral cuff electrode around the optic nerve at the back of ... Many devices have been developed, usually modeled on the cochlear implant or bionic ear devices, a type of neural prosthesis in ... At 14 months post implantation, the implant and retina surrounding it were examined and there were no noticeable changes to ... In 2007, the company began a trial of its second-generation, 60-electrode implant, dubbed the Argus II, in the US and in Europe ...
The resolution of the 6 dot by 10 dot rectangular grid image (produced by the 6 by 10 array of 60 electrode, of which 55 are ... The Argus II system costs about US$150,000, excluding the cost of the implantation surgery and training to learn to use the ... Williams, an investor in a cochlear implant company operated by Mann, approached Mann about founding a company to develop a ... The implantation procedure takes several hours, with the person receiving the implant under general anaesthesia. The surgeon ...
The most recent ARGUS II device contains 60 electrodes, and a 200 electrode device is under development by ophthalmologists and ... The development of retinal implants has also been motivated in part by the advancement and success of cochlear implants, which ... The Manchester Royal Infirmary and Prof Paulo E Stanga announced on July 22, 2015 the first successful implantation of Second ... Array of electrodes is stabilized on the retina using micro tacks which penetrate into the sclera. Typically, external video ...
Cochlear Implants are hearing devices that are placed behind the ear and contain a receiver and electrodes which are placed ... age at implantation, frequency, quality and type of speech training. Some evidence suggests that speech processing occurs at a ... However, cochlear implants may not always work. Research shows that people develop better language with a cochlear implant when ... Although cochlear implants produce sounds, they are unlike typical hearing and deaf and hard of hearing people must undergo ...
... but also insulates the electrodes and increases impedance measurements. Problems with chronic implantation of arrays have been ... Deep brain stimulation (DBS) has been effective at treating movement disorders such as Parkinson's disease, and cochlear ... The standard type of in vitro MEA comes in a pattern of 8 x 8 or 6 x 10 electrodes. Electrodes are typically composed of indium ... In another special design, 60 electrodes are split into 6 × 5 arrays separated by 500 μm. Electrodes within a group are ...
Unfortunately, this may in some rare cases (late implantation or not sufficient benefit from cochlear implants) bring the risk ... that the subjects could identify different pitches that were proportional to the frequency stimulated by a single electrode. ... NAD Cochlear Implant Committee. "NAD Position Statement on Cochlear Implants (2000)". Cochlear Implants %7c National ... Russell JL, Pine HS, Young DL (August 2013). "Pediatric cochlear implantation: expanding applications and outcomes". Pediatric ...
... an important step is documenting the response of living tissue to electrode implantation in both the acute and chronic ... Applications for stimulating interfaces include sensory prosthetics (cochlear implants, for example, are the most successful ... Implantable electrode research also employs many different techniques for surgically implanting the electrodes; the most ... It is ultimately this tissue response that causes electrodes to fail by encapsulating the electrode itself in a protective ...
Unfortunately, this may in some cases (late implantation or not sufficient benefit from cochlear implants) bring the risk of ... that the subjects could identify different pitches that were proportional to the frequency stimulated by a single electrode. ... "Spoken language development in children following cochlear implantation". JAMA. 303 (15): 1498-506. doi:10.1001/jama.2010.451. ... "Sound and Fury - Cochlear Implants - Essay". PBS. Archived from the original on 2015-07-06. Retrieved 2015-08-01 ...
The subjects underwent implantation of electrodes in the brain at Wake Forest as part of a medical diagnostic procedure for ... "Input" prosthetics, such as retinal or cochlear implant, supply signals to the brain that the patient eventually learns to ... They put electrodes in the region, which carried electrical pulses to an external chip. The chip then executed the ... The prosthesis was in the form of multisite electrodes positioned to record from both the input and output "sides" of the ...
The process of implantation of medical devices is subjected to the same complications that other invasive medical procedures ... In some cases implants contain electronics, e.g. artificial pacemaker and cochlear implants. Some implants are bioactive, such ... the implant sends electrical signals to electrodes in the vagus nerve. The application of this device is being tested an ... The last type, late infection, occurs months to years after the implantation of the implant. Late infections are caused by ...
Intracortical implants have electrodes that penetrate into the brain, while epicortical implants have electrodes that stimulate ... Potter, K. A.; Buck, A. C.; Self, W. K.; Capadona, J. R. (2012). "Stab injury and device implantation within the brain results ... there are some devices such as an auditory brainstem implant and a cochlear implant that have been successful in restoring ... Most microelectrode arrays require neuronal cell bodies to be within 50 μm of the electrodes to provide the best function, and ...
History of electrodes in the brain: In 1878 Richard Canton discovered that electrical signals transmitted through an animal's ... In 1972 the cochlear implant, a neurological prosthetic that allowed deaf people to hear was marketed for commercial use. In ... Richard N.W. Wohns - invented interspinous implant and implantation instrument. *Philippe Couillard, Premier of Quebec is a ... Jose Delgado invented the first electrode that was implanted in an animal's brain, using it to make it run and change direction ...
Simmons M, Montague D (2008). "Penile prosthesis implantation: past, present, and future". International Journal of Impotence ... Examples include the intraocular lens, intrastromal corneal ring segment, cochlear implant, tympanostomy tube, and ... the implant sends electrical signals to electrodes in the vagus nerve. [8] The application of this device is being tested an ... The last type, late infection, occurs months to years after the implantation of the implant. Late infections are caused by ...
The result being that the LED producing the light would require less energy and the idea of cochlear prosthetics in association ... Moreover, organic light-emitting diodes (OLED) are suitable for implantation in the brain for their very thin thickness which ... as a new biological pacemaker as a substitute for electrode based-CRT. Lately, optogenetics has been used in the heart to ... Optogenetic application onto the cochlear region allows for the stimulation or inhibition of the spiral ganglion cells (SGN). ...
In 1972 the cochlear implant, a neurological prosthetic that allowed deaf people to hear was marketed for commercial use. In ... History of electrodes in the brain: In 1878 Richard Caton discovered that electrical signals transmitted through an animal's ... Some of the techniques include implantation of deep brain stimulators, spinal cord stimulators, peripheral stimulators and pain ... Jose Delgado invented the first electrode that was implanted in an animal's brain, using it to make it run and change direction ...
Surgically applied electrodes were put on the insect, which was remotely controlled by a human. The results, although sometimes ... Implants, especially cochlear implants, that combine mechanical modification with any kind of feedback response are also cyborg ... It was confirmed that the American Food and Drug Administration approved of these implantations. If these devices are to be ... Kennedy embedded an implant he designed (and named "neurotrophic electrode") near the part of Ray's brain so that Ray would be ...
Gaylor JM, Raman G, Chung M, Lee J, Rao M, Lau J, Poe DS (March 2013). "Cochlear implantation in adults: a systematic review ... The electrodes are placed either via a minimally invasive needle technique (so-called percutaneous leads) or an open surgical ... Auditory brainstem implant, which provides a sense of sound to a person who cannot use a cochlear implant due to a damaged or ... New electrode designs could yield more efficient and precise stimulation, requiring less current and minimizing unwanted side- ...
... Diana Arweiler-Harbeck,1 Christoph Mönninghoff,2 ... 3 different cochlear implant devices were applied: Cochlear Nucleus CI 512 (. ) with 22 electrodes distributed over 15 mm, ... with 12 pairs of electrodes with a distance of 2.4 mm each. Cochlear implantation was performed by the same surgeon; full ... Postoperative imaging after cochlear implantation is usually performed by conventional cochlear view (X-ray) or by multislice ...
Cochlear implantation with Cochlear Nucleus 24 Contour and Cochlear Nucleus Freedom (Cochlear Corp., Lane Cove, New South Wales ... in a large number of the implantations, the external ball electrode of the cochlear implant migrated from the insertion place ... It seems that this migration of the external ball electrode does not influence the function of the cochlear implant and the ... Because of the magnetic field of the receiver/stimulator unit of the cochlear implant and the magnet of the external ...
Cochlear, and Advanced Bionics-in the cochlea via a linear... ... image-guided approach to implant electrodes from three FDA- ... Validation of minimally invasive, image-guided cochlear implantation using Advanced Bionics, Cochlear, and Medel electrodes in ... The Cochlear lateral wall electrodes (straight research arrays) (\(N=2\)) had minimal trauma with 20 and 21 of 22 electrodes ... Minimally invasive, image-guided cochlear implantation is possible using electrodes from the three FDA-approved manufacturers. ...
... Academic Article * View ... The current research explores whether fluctuations in the electrical impedance of cochlear implant electrodes may act as a ... cochlear implantation with a view to preserving residual hearing.Seventy-four patients with residual hearing after cochlear ... Cochlear implant surgery now aims to preserve residual low frequency hearing. ...
Management of Electrode Exposure After Cochlear Implantation. Walgama, Evan S.; Isaacson, Brandon; Kutz, J. Walter Jr.; More ... Finite Element Analysis of Damage by Cochlear Implant Electrode Arrays Proximal Section to the Basilar Membrane. Kha, Hung; ... Finite Element Analysis of Damage by Cochlear Implant Electrode Arrays Proximal Section to the Basilar Membrane. Kha, Hung; ... Round Window Versus Cochleostomy Technique in Cochlear Implantation: Histologic Findings. Richard, Céline; Fayad, Jose N.; ...
Imaging plays an important part in the work-up of cochlear implant candidates, and an understanding of imaging evaluation ... Limit the full insertion of the electrode arrayor- Modify the choice of the cochlear implant- Modify the way of Electrode ... Imaging Requirements for Cochlear Implantation. Dr. Prahlada N.BMBBS, MS, MBA, MHAENT, HEAD - NECK SURGERY & SKULL BASE ... Imaging requirements for cochlear implantation prepared by Dr. Prahlada N.B, Karnataka ENT Hospital & Research Center, ...
... is a commonly used measure of temporal acuity in cochlear-implant (CI) recipients. This measure, like other measures of ... Cochlear Implantation / methods*. Cochlear Implants*. Deafness / therapy*. Electrodes. Female. Hearing. Humans. Loudness ... Gap detection threshold (GDT) is a commonly used measure of temporal acuity in cochlear-implant (CI) recipients. This measure, ... 4029339 - Effect of electrode size on brain stimulation.. 20075299 - Arrhythmic rats after scn lesions and constant light ...
... investigated cochlear implantation of any CI system in adults with post-lingual onset of deafness and normal cochlear anatomy ... Angular Electrode Insertion Depth and Speech Perception in Adults With a Cochlear Implant: A Systematic Review Otol Neurotol. ... possibly contribute to the determination of the optimal cochlear implant (CI) electrode position. ...
Revision Cochlear Implantation With Different Electrodes Can Cause Incomplete Electrode Insertion and Poor Performance. Shin, ... The Effects of Residual Hearing in Traditional Cochlear Implant Candidates After Implantation With a Conventional Electrode. ... Outcomes of Cochlear Implantation in Children With Isolated Auditory Neuropathy Versus Cochlear Hearing Loss. Budenz, Cameron L ... Cochlear Implants Developmental Effects of Family Environment on Outcomes in Pediatric Cochlear Implant Recipients. Holt, ...
COCHLEAR IMPLANTS) with electrodes to the COCHLEAR NERVE in the inner ear to create sound sensation in patients with residual ... Cochlear Implantation: Surgical insertion of an electronic hearing device ( ... Cochlear Implantations; Cochlear Prosthesis Implantations; Implantation, Cochlear; Implantation, Cochlear Prosthesis; ... Cochlear; Implantations, Cochlear Prosthesis; Prosthesis Implantation, Cochlear; Prosthesis Implantations, Cochlear; Cochlear ...
Left-sided cochlear implantation was performed using a conventional length lateral wall electrode. Intraoperative device ... i,Conclusion,/i,. We report the third case of cochlear implantation in a patient with CMT. SNHL in CMT is hypothesized to ... Our results corroborate two earlier reports that cochlear implantation is a viable option for rehabilitation of SNHL in this ... In patients with CMT, cochlear implantation may reconstitute synchronous neural activity by way of supraphysiological ...
b,,i,Objective:,/i,,/b, To investigate the use of hearing preservation cochlear implantation in children with partial deafness ... A new electrode for residual hearing preservation in cochlear implantation: first clinical results. Acta Otolaryngol 2009;129: ... Keywords: Children with cochlear implantsElectroacoustic stimulationHearing preservationCochlear implantationPartial deafness ... Implantation was performed using a hearing preservation technique. A Flex EAS electrode (MED-EL, Innsbruck, Austria) was used ...
Compatible with all existing electrodes. Enable future research & development. 5. Robotic Cochlear implantation ... Computer assisted Cochlear Implantation 15. Scientific dissemination. 40 research articles published or in. process:. ... Image-guided microsurgery for hearing aid implantation. Stefan Weber. University of Bern. 1. Partners. University of Bern. ...
Imaging of electrode position in relation to electrode functioning after cochlear implantation. Eur Arch Otorhinolaryngol 2009; ... Assessment of electrode placement and audiological outcomes in bilateral cochlear implantation. Otol Neurotol 2011;32:428-32. ... Hearing preservation after cochlear implantation using deeply inserted flex atraumatic electrode arrays. Audiol Neurootol 2012; ... We analyzed cochlear implantations with various straight electrodes of different lengths and flexibility manufactured by Med-EL ...
Surgical planning for cochlear implantation. Cochlear implantation involves the insertion of a thin electrode array inside the ... Computational simulation of cochlear implants. Our automatic framework is able to generate patient-specific models for ... that the insertion depth of the electrode array has a strong influence on the quality of perceived sound after implantation. We ... Virtual electrode array insertion, for the automatic construction of patient-specific finite element models for simulation ( ...
Cochlear Implantation. Surgical insertion of an electronic hearing device (COCHLEAR IMPLANTS) with electrodes to the COCHLEAR ... Bilateral Cochlear Implantation in Children With the MED-EL Cochlear Implant. The purpose of this study is to evaluate and ... Cochlear Nerve. The cochlear part of the 8th cranial nerve (VESTIBULOCOCHLEAR NERVE). The cochlear nerve fibers originate from ... The fibers of the cochlear nerve originate from neurons of the SPIRAL GANGLION and project to the cochlear nuclei (COCHLEAR ...
The passive electrode was placed on the forehead. Positive and next negative DC stimulation was provided with the use following ... The passive electrode was placed on the forehead. Positive and next negative DC stimulation was provided with the use following ... The first aim of our study was to investigate further the mechanisms of non-invasive extra-cochlear electric stimulation on ... The second - was to assess the effects of non-invasive extra-cochlear electric stimulation on tinnitus in tinnitus patients. ...
Some candidates to cochlear implantation can have residual low frequencies hearing. The EVO electrode lead has been ... Implantation of the HiRes90K Advantage Cochlear Implant With HiFocus Mid-Scala and Development of a Combined Electric and ... using the HiResolution 90K Advantage cochlear implant with the HiFocus Mid-Scala electrode to ... ... Hearing Preservation and Electro-acoustic Stimulation With EVO Electrode Lead and Zebra Sound Processor ...
"Vestibular Outcome After Cochlear Implantation Is Not Related to Surgical Technique: A Double Blinded, Randomized Clinical ... Intracochlear fluid pressure changes related to the insertion speed of a CI electrode ... Vestibular Outcome After Cochlear Implantation Is Not Related to Surgical Technique: A Double... Korsager, Leise Elisabeth ... Vestibular Outcome After Cochlear Implantation Is Not Related to Surgical Technique: A Double Blinded, Randomized Clinical ...
It has a microphone, speech processor, transmitter and an electrode array. It is different from hearing aid and cannot restore ... Cochlear Implantation Scientific Journals. A small electronic device inserted into the ear of deaf whose capability level of ...
Results of partial deafness cochlear implantation using various electrode designs. Audiology neurootology, 14 Suppl 1(suppl 1 ... He performed the first operation of cochlear implantation in Poland and Central Europe in 1992, restoring hearing ability to a ... Skarzynski calls this procedure "partial deafness cochlear implantation". He later performed the same procedure on a child in ... Partial deafness cochlear implantation in children. International Journal of Pediatric Otorhinolaryngology 71(9):1407-13 (2007 ...
... we argue that regulatory agencies worldwide should review their guidance on cochlear ... Cochlear implantation with the nucleus slim straight electrode in subjects with residual low-frequency hearing. Ear and Hearing ... 2016). Facial nerve stimulation in the narrow bony cochlear nerve canal after cochlear implantation. The Laryngoscope, 126(6), ... 2007). Childhood development after cochlear implantation (CDaCI) study: Design and baseline characteristics. Cochlear Implants ...
Validation of Minimally Invasive, Image-Guided Cochlear Implantation using Advanced Bionics, Cochlear, and Medel Electrodes in ... Assessment of Electrode Placement and Audiological Outcomes in Bilateral Cochlear Implantation. Otol Neurotol. 2011 Apr;32(3): ... Durability of Hearing Preservation after Cochlear Implantation with Conventional-Length Electrodes and Scala Tympani Insertion ... Evaluation of Rigid Cochlear Models for Measuring Cochlear Implant Electrode Position. Otol Neurotol. 2016 Dec. ...
Non-penetrating round window electrode stimulation for tinnitus therapy followed by cochlear implantation. ...
Electrode location and audiologic performance after cochlear implantation in adults: a comparison of CI422 and CI512 electrode ... The Importance of Electrode Location in Cochlear Implantation. OConnell BP, Hunter JB, Wanna GB. Laryngoscope Investigative ... Electrode Location and Angular Insertion Depth Are Predictors of Audiologic Outcomes in Cochlear Implantation. OConnell BP, ... Hearing Preservation Outcomes with a Mid-Scala Electrode in Cochlear Implantation. Hunter JB, Gifford RH, Wanna GB, Labadie RF ...
Which complication is more likely in patients with cochlear dysplasia who undergo cochlear implantation? ... One of the electrodes of the cochlear implant is stimulating Jacobsons nerve on the promontory. ... A 45-year-old man is being evaluated for cochlear implantation. He has a long history of chronic ear disease that is now ... True/False:The electrode of the cochlear implant is normally placed into the scala tympani. ...
An implantable electrode carrier has an outer surface with electrode contacts for electrically stimulating nearby neural tissue ... At least one fluid delivery port connects the fluid storage reservoir to the outer surface of the electrode carrier for ... An enlarged fluid storage reservoir within the electrode carrier stores a treatment volume of therapeutic fluid for an extended ... An implantable electrode with a fluid reservoir is described. ... With respect to cochlear implants, each re-implantation with ...
Electrode Location and Audiologic Performance After Cochlear Implantation: A Comparative Study Between Nucleus CI422 and CI512 ... Predictive factors for short- and long-term hearing preservation in cochlear implantation with conventional-length electrodes. ... Durability of Hearing Preservation after Cochlear Implantation with Conventional-Length Electrodes and Scala Tympani Insertion. ... Tip Fold-over in Cochlear Implantation: Case Series.. Zuniga MG, Rivas A, Hedley-Williams A, Gifford RH, Dwyer R, Dawant BM, ...
Vestibular Function After Cochlear Implantation: A Comparison of Three Types of Electrodes. Otology and Neurotology, 37 (10), ... expectations before and experiences after cochlear implantation in adult cochlear implant users and their significant others. ... Boisvert, I. , Lyxell, B. , Mäki-Torkko, E. , McMahon, C. M. & Dowell, R. C. (2012). Choice of ear for cochlear implantation in ... Bergman, P. , Lyxell, B. , Harder, H. & Mäki-Torkko, E. (2020). The outcome of unilateral cochlear implantation in adults: ...
... postoperative electrode position estimation and implantation evaluation; and cochlear implantation simulation. ... Pre- and post-operative CT images are used routinely for surgery planning and evaluation of cochlear implantation. However, due ... Finally, the last focus concerns a joint model of the cochlear shape (and its substructures) model and its appearance within a ... The second focus aims at developing and evaluating a new parametric cochlear shape model. The model is applied to extract ...
  • Thirty-nine patients (22-77 yrs old) implanted for sensorineural deafness in the cochlear implants program of the Academic Medical Center of Amsterdam. (
  • Surgical insertion of an electronic hearing device (COCHLEAR IMPLANTS) with electrodes to the COCHLEAR NERVE in the inner ear to create sound sensation in patients with residual nerve fibers. (
  • thus, the role of cochlear implants in auditory rehabilitation of CMT-associated SNHL is poorly defined [ 1 , 2 ]. (
  • We have developed a system to perform patient-specific simulations of electrode array insertion, based on the detailed anatomy of the patient (estimated thanks to the SSM) and a library of implants available in the market. (
  • Work in collaboration with NASA Ames Research Center has focused on the simulation of the effect of nerve degeneration on their electrical activation, in the particular context of cochlear implants. (
  • When singing with cochlear implants, are two ears worse than one for perilingually/postlingually deaf individuals? (
  • Many individuals with bilateral cochlear implants hear different pitches when listening with their left versus their right cochlear implant. (
  • Bimodal Hearing or Bilateral Cochlear Implants? (
  • Cochlear implants (CIs) represent one of the most important achievements of modern medicine as, for the first time in history, an electronic device is able to restore a lost sense - hearin. (
  • 1992 - Implementation of deafness treatment program in Poland using cochlear implants. (
  • Using the United States Food and Drug Administration (FDA) as example, we argue that regulatory agencies worldwide should review their guidance on cochlear implants (CIs). (
  • 2019). Cochlear implants in children. (
  • Comparison of intelligence quotients of first- and second-generation deaf children with cochlear implants. (
  • At UT Southwestern, he was recently awarded the Dedman Family Scholar in Clinical Care for his research with cochlear implants. (
  • Audiovisual Temporal Processing in Postlingually Deafened Adults with Cochlear Implants. (
  • Speech Understanding in Noise for Adults With Cochlear Implants: Effects of Hearing Configuration, Source Location Certainty, and Head Movement. (
  • Cochlear implants (CI) are used to treat hearing loss by surgically inserting an electrode array into the organ of hearing, the cochlea. (
  • Les implants cochléaires (IC) sont utilisés pour traiter la surdité profonde en insérant chirurgicalement un réseau d'électrodes dans l'organe de l'audition, la cochlée. (
  • Today I'll talk about bilateral cochlear implantation and the benefits of having two implants in terms of speech perception in quiet and in noise, localization ability and implications on language development in children. (
  • My associate, Dr. Kathleen Highhouse, will review clinical case studies of three adults who use bilateral cochlear implants (CI), two of whom were implanted simultaneously. (
  • In the context of bilateral cochlear implants, we note better speech comprehension in noise, better sound localization, and improved ease of listening. (
  • Let's review some of the literature to see what kind of results we're getting with bilateral cochlear implants. (
  • 2008) conducted a study of sound localization in sequentially-implanted cochlear implant users who had been using their bilateral implants for an average of 59 months. (
  • More and more prelingually deafened and long term deafened patients are seeking information on cochlear implants. (
  • Cochlear implants can help patients with severe to profound sensorineural hearing loss in both ears who cannot benefit adequately from the use of hearing aids. (
  • Dorman MF, Natale SC, Butts AM, Zeitler DM, Carlson ML . The Sound Quality of Cochlear Implants: Studies With Single-sided Deaf Patients. (
  • And, unfortunately, there are some individuals for whom cochlear implants are not recommended. (
  • Cochlear implants can restore the ability to hear speech in these patients. (
  • Methods - The authors present three tip fold-over cases, experienced throughout their work with Slim Modiolar Electrode implants. (
  • Using advanced techniques at the Canadian Light Source (CLS) at the University of Saskatchewan, scientists have created three-dimensional images of the complex interior anatomy of the human ear, information that is key to improving the design and placement of cochlear implants. (
  • In cases of hearing loss, cochlear implants are used to bypass damaged parts of the ear and directly stimulate the auditory nerve. (
  • This is very important when cochlear implants are considered for people with limited hearing. (
  • Later developments included cochlear implants, which were originally designed to restore hearing to profoundly deaf people. (
  • Cochlear implants are made up of inside and outside pieces that work together. (
  • At Mayo Clinic, your evaluation for cochlear implants involves tests with various specialists during several outpatient visits. (
  • Mayo Clinic specialists are committed to the long-term support of people who receive cochlear implants, from the initial fitting and programming of the devices to ongoing management of device performance. (
  • Mayo Clinic offers the latest technology available for cochlear implants, including hybrid cochlear implants. (
  • Mayo Clinic has performed cochlear implants in children as young as 4 months of age and in adults up to age 96. (
  • Mayo Clinic's Cochlear Implant Facility in Rochester, Minnesota, was one of the first programs to use cochlear implants to treat children with auditory neuropathy spectrum disorder (ANSD). (
  • Hybrid cochlear implants stimulate the area at the base of the cochlea electrically, while also providing the acoustic amplification of a hearing aid. (
  • Specific efforts include studies of cochlear implants for unilateral hearing loss in adults and children, improved electrodes, and the use of cochlear implants in people with inner-ear schwannomas. (
  • Other areas of research focus on children, including efforts to determine the effectiveness of cochlear implants for children with less severe hearing loss. (
  • The Bionic Ear Association (BEA) is comprised of caring professionals and a dedicated team of volunteers who provide you and your loved ones with information, education, and support for choosing, getting, and living with cochlear implants. (
  • The HiFocus Mid-Scala electrode for HiRes 90K Advantage implants from Advanced Bionics is the industry's latest innovation in electrode design. (
  • Simultaneous and non-simultaneous dual electrode stimulation in cochlear implants: evidence for two neural response modalities. (
  • Frequency map for the human cochlear spiral ganglion: Implications for cochlear implants. (
  • Animal models of cochlear implants can advance knowledge of the technological bases of treating permanent sensorineural hearing loss with electrical stimulation. (
  • Cochlear implants (CIs) are neuroprosthetic devices that can provide a sense of hearing to deaf people. (
  • Cochlear implants (CIs) can provide deaf people with a sense of hearing by directly stimulating the auditory nerve. (
  • Today surgeons and audiologists routinely fit deaf children with cochlear implants in an effort to return them fully to the hearing world. (
  • This project will explore the extent to which individuals with cochlear implants lose ability to perceive emotion in speech as they age. (
  • She investigates the basic mechanisms underlying auditory processing by cochlear implant listeners, including studies of channel-interaction, amplitude modulation processing, modulation masking/modulation detection interference, and voice pitch coding, an area of specific deficits in listeners with cochlear implants. (
  • Purpose of this course is to gain knowledge regarding the history of cochlear implants as well as candidacy criteria for the adult and pediatric populations. (
  • Learners will understand how to assess speech perception in adults and children with cochlear implants and to learn now to enhance performance with bilateral implantation, bimodal stimulation, and hearing assistance technology. (
  • Little Neave Barrett is the youngest baby in South Africa and one of the youngest in the world - at just three and a half months old - to get cochlear implants to give her the gift of hearing, reports Adiel Ismail in an exclusive interview for Health24 . (
  • What are cochlear implants and how do they work? (
  • Ciorba A, Bovo R, Trevisi P, Rosignoli M, Aimoni C, Castiglione A et al (2012) Postoperative complications in cochlear implants: a retrospective analysis of 438 consecutive cases. (
  • Cohen NL, Hoffman RA (1993) Surgical complications of multi- channel cochlear implants in North America. (
  • Hopfenspirger MT, Levine SC, Rimell FL (2007) Infectious complications in pediatric cochlear implants. (
  • Well-placed electrode arrays in patients receiving cochlear implants can allow otherwise deafened auditory systems to achieve hearing and recognize speech. (
  • AB's Audiologist & Surgeon Library provides you with up-to-date product manuals, videos, documents and related resources specific to AB cochlear implants. (
  • Cochlear implants that have electrodes designed without wire perform better than those with wires for long-term hearing preservation, a Mount Sinai researcher has reported in a first-of-its-kind study. (
  • A team of Swinburne researchers is developing an app to teach infants with cochlear implants how to speak. (
  • As of 2006, approximately 100,000 people worldwide had received cochlear implants, with recipients split almost evenly between children and adults. (
  • There is disagreement whether providing cochlear implants to children is ethically justifiable, renewing a century-old debate about models of deafness that often pits hearing parents of deaf children against the Deaf community. (
  • Cochlear Implants", W.F.House. (
  • Although cochlear implants (CIs) have been used to treat bilateral severe-to-profound hearing loss for more than 50 years, CIs for SSD is a relatively new CI application. (
  • Cochlear implants enable hearing by helping to organize sound. (
  • The implants can be set to meet the needs of users, and an audiologist can set electrode levels for each user. (
  • The original single-channel implants have been replaced by greater use of multichannel implants, where the stimulation is distributed across an array of electrodes that evoke a wider range of auditory perception. (
  • Cochlear implants are options for habilitation (i.e., helping a person develop or learn new skills or abilities) or rehabilitation (i.e., helping a person relearn old skills that were lost somehow) available for individuals with profound hearing impairment (Geers & Moog, 1994). (
  • In 1990 cochlear implants were approved by the United States Food and Drug Administration for children between the ages of 2 and 17. (
  • Most early research focused on the benefit gained from use of cochlear implants in conjunction with speechreading (Geers & Moog, 1992). (
  • More recent research has investigated the receptive and expressive language gains experienced by users of cochlear implants (Hasenstab & Tobey, 1991). (
  • Research shows that pediatric implant users gain substantial benefit from multichannel cochlear implants, that these benefits develop over a long course of time, and that multichannel implants are more beneficial than single-channel devices (Hasenstab, 1989). (
  • Several significant factors interact in the consideration of cochlear implants as an option. (
  • Trends in effective use of cochlear implants have been observed. (
  • Surgical insertion of an electronic hearing device (AUDITORY BRAIN STEM IMPLANTS) with electrodes to the cochlea nucleus in the BRAIN STEM rather than to the inner ear as in COCHLEAR IMPLANTATION. (
  • Since cochlear implants (CIs) were first introduced into clinical practice in the mid-1980s, CI technology has changed significantly. (
  • How the setting of cochlear implants and other hearing devices can be optimised by using individualised measures of biological function and hearing performance, including use of imaging and measures of specific hearing abilities. (
  • This thesis characterizes binaural interactions in auditory neurons using a cat model of bilateral cochlear implants. (
  • Since cochlear implants typically encode sounds by amplitude modulation (AM) of pulse-train carriers, ITD tuning of IC neurons was also studied using AM pulse trains. (
  • Cochlear implants provide a heightened sense of sound for adults and children with profound hearing loss. (
  • Cochlear implants will not restore or create normal hearing. (
  • There has been a link between cochlear implants and bacterial meningitis . (
  • Many children with these mutations receive cochlear implants for auditory habilitation. (
  • This technique only gives projective information on the fact that insertion into the cochlea has been successful, but analysis of exact electrode position with regard to the topography of the cochlea is impossible [ 1 , 2 ]. (
  • This is not only of major importance for quality control as far as surgical insertion methods are concerned but also with regard to special anatomic situations (e.g., mondini dysplasia, ossification of cochlea due to meningitis or otosclerosis) and fitting conditions dependent on electrode array position and results of neural response telemetry in rehabilitation. (
  • The aim of our study was to evaluate the clinical use of flat-panel CT as far as feasibility, artefacts, position within the cochlea and the temporal bone, and visualization of electrodes of different implant types are concerned. (
  • Validation of a novel minimally invasive, image-guided approach to implant electrodes from three FDA-approved manufacturers-Medel, Cochlear, and Advanced Bionics-in the cochlea via a linear tunnel from the lateral cranium through the facial recess to the cochlea. (
  • A linear tunnel was drilled from the lateral skull to the cochlea followed by a marginal, round window cochleostomy and insertion of the electrode array into the cochlea through the drilled tunnel. (
  • The CI Surgeon must be familiar with imaging findings that contraindicate implantation (absence of the cochlea or cochlear nerve) and with those that could significantly alter surgery (facial nerve dehiscence, cochlear ossification). (
  • Congenital absence of the cochlear nerve with an isolated cochlea. (
  • Localization of the electrode after cochlear implantation seems to have an impact on auditory outcome, and conebeam CT has emerged as a reliable method for visualizing the electrode array position within the cochlea. (
  • After surgery, the final placement of the electrode array within the cochlea can be documented with conebeam CT (CBCT). (
  • Clark GM, Black R, Dewhurst DJ, Forster IC, Patrick JF, Tong YC: A multiple-electrode hearing prosthesis for cochlea implantation in deaf patients. (
  • Cochlear implantation involves the insertion of a thin electrode array inside the cochlea. (
  • The first focus of this work aims at defining automatic image processing methods adapted to the spiral shape of the cochlea to study the cochlear shape variability from high-resolution μCT images. (
  • The receiver carries the current to the electrode array which has been implanted into the cochlea, the portion of the inner ear that contains hearing nerve fibers. (
  • In CI surgery, the surgeon threads the electrode array into the cochlea, blind to internal structures. (
  • However, this approach cannot be used for the majority of CI users because the cochlea is obscured by image artifacts produced by CI electrodes and acquisition of pre-implantation CT is not universal. (
  • The implant is a neural stimulator with an electrode array surgically placed near the auditory nerve fibers in the scala tympani of the cochlea. (
  • Most meningitis cases were associated with an implant with a positioner, a silastic wedge inserted next to the implanted electrode in the cochlea to position the electrode closer to the cochlear nerve endings and thus facilitate electrical signal transmission. (
  • The insertion was considered deep when the electrode was placed at least 22 mm into the cochlea. (
  • The receiver in turn relays these signals into the electrode which has been inserted into the cochlea, enabling it to substitute for the missing cochlear hair cells. (
  • To study the lateral wall of the cochlea in human temporal bones (TBs), in order to evaluate the feasibility of performing micro-dissection of the spiral ligament and an endosteal electrode implantation. (
  • Our study provides some numerical references for the dimensions of the cochlea that may help in cochlear surgery. (
  • The carrier member ( 11 ) is made of a resiliently flexible first material and has a plurality of electrodes ( 12 ) mounted thereon and has a first configuration selected to allow it to be inserted into an implantee's cochlea, and at least a second configuration wherein it is curved to match a surface of the cochlea. (
  • With the images, we can now see the relationship between the cochlear implant electrode and the soft tissue, and we can design electrodes to better fit the cochlea," said Dr. Helge Rask-Andersen, senior professor at Uppsala University in Sweden. (
  • By imaging the soft and bony structures of the inner ear with implant electrodes in place, Rask-Andersen said the researchers were able to discover what the auditory nerve looks like in three dimensions, and to learn how cochlear implant electrodes behave inside the cochlea. (
  • The electrode array is put into the cochlea, stimulating the hearing nerve. (
  • The electrical energy is sent to the electrode array within the cochlea, where it stimulates the hearing nerve. (
  • Offering surgeons precise control of the angle and speed of insertion, the HiFocus Mid-Scala electrode has been developed to insert easily and gently for maximum protection of the cochlea. (
  • Developed through extensive research and using state-of-the-art manufacturing processes, the HiFocus Mid-Scala electrode has been designed for optimal placement in the cochlea. (
  • AB's HiFocus 1j electrode is designed for highly effective placement inside the cochlea. (
  • The development of mechatronic assistance devices provides the possibility to position cochlear implant electrodes (CI) with high precision within the spiral cochlea in an optimized location. (
  • Escud B, James C, Deguine O, Cochard N, Eter E, Fraysse B. The size of the cochlea and predictions of insertion depth angles for cochlear implant electrodes. (
  • The course covers basic mechanics and physiology of auditory detection and transduction at the level of the cochlea, as well as important aspects in central auditory processing, giving emphasis to issues that are particularly relevant to electrical stimulation with cochlear implant systems. (
  • Includes detailed consideration of early development of the cochlea and central auditory pathways, as well as age related plasticity in the auditory brain, which will be linked to issues relating to cochlear implantation in children and in adults. (
  • During primary surgery, it is sealed, and cochlea implantation is performed for hearing restoration. (
  • During the revision of cochlea implantation 6 months later, intact coverage of the oval niche was observed. (
  • The implant electrode that bridges the damaged part of the inner ear to allow the patient to hear again is then carefully inserted into the cochlea through the access in the bone. (
  • The minimally-invasive keyhole tunnel runs at a safe distance between the facial nerve and the chorda tympani nerve into the cochlea so that the electrode wire of the implant can be inserted through this opening into the cochlea at the preplanned angle. (
  • This first Robotic Cochlea Implantation is the result of a decade of multidisciplinary research by a team of biomedical engineers, neuroradiologists, neurologists, audiologists, allied health professionals and surgeons," says Prof Marco Caversaccio of the Department of ORL, Head and Neck Surgery, Inselspital, Bern. (
  • Moreover, the Greenwood function provides the mathematical basis for cochlear implant surgical electrode array placement within the cochlea. (
  • The success of a cochlear implant relies in part upon electrode array placement within the cochlea in which the positioning is based on the frequency-spatial relationship empirically described by the Greenwood function. (
  • 2006, Wilson 2004) A typical cochlear implant electrode array may be inserted at a depth of 22-25 mm into the cochlea [1]. (
  • At an insertion depth of 25mm into the base of the cochlear spiral, the distance from the apex of the cochlea to the deepest electrode is 10 mm using the mean value of 35 mm for the length of a standard human cochlea translating to x=10/35 in the Greenwood function (Greenwood 1990). (
  • Unlike hearing aids, the cochlear implant does not amplify sound, but works by directly stimulating any functioning auditory nerves inside the cochlea with an electric field. (
  • The implant relays the incoming signal to the implanted electrodes in the cochlea. (
  • A cochlear implant prosthesis is a device that includes an external package (microphone and speech processor) worn by the user and an internal package (an array of electrodes that is surgically implanted into the cochlea (end organ of hearing) in the inner ear. (
  • That is why MED−EL designs the world's most atraumatic electrodes to preserve the delicate structures of the cochlea today and for the future. (
  • A wire that runs from the receiver to an electrode array that is placed in the inner ear, where it stimulates the nerves of the cochlea. (
  • A wire with the electrode array will be placed through the hole and into the cochlea. (
  • The anatomy of the cochlea forms the basis for a successful cochlear implantation. (
  • It enables us to perform optimal auditory nerve stimulation and allows feed back on surgical quality concerning the method of electrode insertion. (
  • Lateral wall electrodes were associated with less intracochlear trauma suggesting that they may be better suited for this surgical technique. (
  • Kronenberg J, Baumgartner W, Migirov L (2004) The suprameatal approach: an alternative surgical approach to cochlear implantation. (
  • The aim of this retrospective study was to evaluate the frequency and clinical impact of scalar dislocation of various electrodes and surgical approaches and to evaluate its influence on auditory outcome. (
  • Vestibular Outcome After Cochlear Implantation Is Not Related to Surgical Technique: A Double. (
  • Systematic Review and Meta-Analysis of Surgical Complications Following Cochlear Implantation in Canal Wall-Down Mastoid Cavities. (
  • Evaluate the benefit of preoperative surgical planning using computed tomography (CT) for atraumatic cochlear implantation. (
  • Also, preoperative surgical planning was reliable in the seven temporal bones implanted with two electrode types (accuracy 93%, sensitivity 85.7%, specificity 100%) yielding no damage to intracochlear structures. (
  • Difficulties to access RWM could be predicted on preoperative CT of temporal bones and control population, which correlated well with anatomical dissections and surgical findings during cochlear implantation. (
  • Purpose - The prompt realization of such complication following electrode insertion would be auspicious, thus the electrode could be possibly repositioned during the same surgical procedure. (
  • Surgical strategies used for hearing preservation with a short hybrid cochlear implant are outlined. (
  • It can be implanted using more than one surgical approach and offers the ability to reload the electrode providing peace of mind to the surgeon. (
  • This study presents a surgical protocol for acute deafening and cochlear implantation of an electrode array in mice as well as the functional assessment with auditory brainstem response. (
  • Also reviews surgical procedures, and a range of medical considerations related to cochlear implant candidature (e.g. temporal bone malformations, multiple handicaps, genetic etiology etc. (
  • Loundon N, Blanchard M, Roger G et al (2010) Medical and surgical complications in pediatric cochlear implantation. (
  • Cohen NL, Hoffman RA, Stroschein M. Medical or surgical complications related to the nucleus multichannel cochlear implant. (
  • A team of surgeons and engineers of Inselspital, Bern University Hospital, and the ARTORG Center for Biomedical Engineering Research, University of Bern (Switzerland), have developed a high-precision surgical robot for cochlear implantation. (
  • For individuals with sensorineural hearing loss surgical implantation of a cochlear implant is indicated. (
  • To help ensure that cochlear implant surgery for your patients goes as smoothly as possible, AB has produced a video for surgeons entitled "HiRes 90K Surgical Video Featuring the HiFocus Helix and HiForcus 1j Electrodes. (
  • We analyzed the topographical relationship between the RW and ICV bony channel and cochlear aqueduct (CA) from a surgical standpoint. (
  • Surgical technique during implantation also is described. (
  • A new surgical method and tools are described for the implantation of electrode arrays into the canalis cochlearis of profoundly deaf persons. (
  • These children are also at risk for additional outcomes such as neurological dysfunction or cochlear ossification (hardening of the bone), presenting surgical challenge. (
  • Surgical nuances of the implantation procedure of the HeartMate 3 left ventricular assist system (Abbott Corp., IL, USA) are discussed in this study. (
  • Minimal-invasive Cochlear Implantation: Surgical feasibility and first clinical experience. (
  • The local implantation of tumor cells by contamination of instruments and surgical equipment during and after surgical resection, resulting in local growth of the cells and tumor formation. (
  • USAIS provides specialised clinical services to people from around the South of England who need a cochlear implant, other types of surgical hearing prostheses, or specialist services in Auditory Processing Disorder and other specialised forms of hearing assessment. (
  • How inflammation contributes to loss of residual hearing for profoundly deaf people undergoing cochlear implant surgery (in cases where performance will be compromised if the natural "acoustic hearing" of these implant recipients is lost during the surgical process). (
  • We present a patient with CMT-associated deafness successfully treated with cochlear implantation. (
  • To investigate the use of hearing preservation cochlear implantation in children with partial deafness. (
  • Hearing preservation cochlear implantation is a new effective modality in children with partial deafness. (
  • 2002 - July 12 the world's first cochlear implant surgery in an adult patient with partial deafness. (
  • 2001 - development of new, original ways of the middle ear reconstructive surgery with the use of alloplastic materials (glass ionomers) 2002 - development of new diagnostic tools - audiometer Kuba Mikro 2002 - development of PDCI (Partial Deafness cochlear implantation) - unique in the world method of partial deafness treatment (PDT - Partial Deafness Treatment) that allows to correct the comfort of hearing using cochlear implant maintaining the present hearing. (
  • Partial deafness cochlear implantation in children. (
  • Results of partial deafness cochlear implantation using various electrode designs. (
  • In children born with deafness, early implantation is preferred, so that they may experience speech sounds in time to begin learning language before the age of 2-3. (
  • In special cases, implantation may be performed on patients with long-term deafness. (
  • The inner ear is anatomically characterized preoperatively to individually fit the electrode at implantation, which makes it possible to treat deafness. (
  • Patients: Fifty-six patients with functional deafness who had undergone cochlear implant surgery and received a Flex 28 electrode (MED-EL GmbH, Innsbruck, Austria) between 2011 and 2014. (
  • Implantation of Multiple Intracochlear Electrodes for Rehabilitation of Tota Deafness: Preliminary Report", C.H.Chouard and P.Macleod. (
  • For some who have a desire to correct deafness, a cochlear implant can be a solution that opens up the world of sound, music and spoken words to individuals who thought they would never hear the sound of their loved ones' voices. (
  • The cochlear implant, which represents a significant advancement in the treatment of deafness, was pioneered in the early 1960s by otologist Dr. William House. (
  • Cochlear implantation is a standard procedure for rehabilitation of profound hearing loss and single sided deafness. (
  • The purpose of the study was to compare the speech perception performance of cochlear implant patients with GJB2-related deafness to patients without GJB2-related deafness. (
  • Charts were reviewed for cause and duration of deafness, age at time of cochlear implantation, intraoperative and postoperative complications, duration of use, and current age. (
  • This retrospective analysis of the postoperative computed tomographic scans showed that, in a large number of the implantations, the external ball electrode of the cochlear implant migrated from the insertion place toward the magnet of the receiver/stimulator unit of the implant. (
  • one had minimal insertion trauma and 14 of 16 electrodes intracochlear, while the other had violation of the basilar membrane just deep to the cochleostomy following which it remained in scala vestibuli with 13 of 16 electrodes intracochlear. (
  • The electrodes were introduced without resistance, and a full insertion was achieved using the MED-EL™ Synchrony Flex® 28 cochlear implant. (
  • In all cases, the electrode array penetrated the basal membrane within 45° of the electrode insertion. (
  • Therefore, electrodes for atraumatic insertion were developed in recent years. (
  • Rajan et al 9 showed that a slow electrode insertion speed can promote preservation of residual hearing. (
  • Furthermore, there is growing evidence stating that the insertion depth of the electrode array has a strong influence on the quality of perceived sound after implantation. (
  • Electrode Location and Angular Insertion Depth Are Predictors of Audiologic Outcomes in Cochlear Implantation. (
  • The model is applied to extract patient-specific clinically relevant metrics such as the maximal insertion depth of CI electrode arrays. (
  • We aimed to evaluate the effectiveness of cochlear measures obtained by computed tomography (CT) scan in predicting depth of cochlear implant insertion. (
  • High-resolution radiographs provided preoperative by CT-Scan were used to determine electrode array insertion depth and diameter of the cochlea's basal turn. (
  • Much interest has been given to depth of electrode insertion. (
  • Thereafter, preoperative CT scan measurements were applied to seven additional temporal bones that underwent cochlear implantation with the insertion of two electrodes of different diameters (14 implantations) to validate radiological analysis. (
  • According to CT planning, electrode insertion through RWM was feasible in most patients, with or without drilling posterosuperior bony overhang of round window niche. (
  • As all of these measurements are still carried out following electrode insertion, real-time identification, unfortunately, remains questionable. (
  • The research, conducted with colleagues from Western University and published in Ear and Hearing, the official journal of the American Auditory Society, provides information that can be used to assess electrode insertion depths and stimulation strategies as well as to create exact frequency maps for optimal stimulation of the auditory nerve. (
  • The use of a full insertion electrode of 28mm in patients with poor preoperative thresholds does not allow for usable additional hearing at present. (
  • Featuring the industry's smallest pre-curved array, the HiFocus Mid-Scala is also the industry's only pre-curved electrode developed for the latest soft surgery approaches, including round window insertion, to suit surgeon preferences and individual recipient needs. (
  • The combined approach technique (CAT) is a variation of the classical the mastoidectomy-posterior tympanotomy technique (MPTA) that combines a transcanal approach to cochleostomy with a reduced posterior tympanotomy for insertion of electrodes. (
  • The cylindrical implantation element anchors the lead anchor into patient tissue by insertion of the implantation element into the patient tissue using a needle insertion tool. (
  • Electrode array insertion depth is guided by the frequency map created by the Greenwood function, and allows electrical stimulation of neurons involved in stimulating the area of the brain responsible for speech recognition while minimizing ganglia stimulation in noise-generating regions. (
  • An electrode array for insertion into soft tissue comprises a multitude of thin flexible electrodes each having a distal tip and a proximal end, wherein at least portions of the electrodes extending from their proximal ends are disposed in parallel. (
  • The invention relates to a medical electrode array for insertion into soft tissue such as the brain, the spinal cord, endocrine organs, muscles, and connective tissue, comprising a multitude of thin wire electrodes, to a method of its manufacture, and to uses of the electrode array. (
  • This may be essential to consider during selection of different trajectories for electrode insertion aiming at preserving residual hearing. (
  • All cases could be implanted successfully with full electrode insertion and good audiological outcome. (
  • Gap detection threshold (GDT) is a commonly used measure of temporal acuity in cochlear-implant (CI) recipients. (
  • Results in Adult Cochlear Implant Recipients With Varied Asymmetric Hearing: A Prospective Longitudinal Study of Speech Recognition, Localization, and Participant Report. (
  • This study investigated the speech perception of cochlear implant (CI) recipients with measurable preoperative ipsilateral speech perception. (
  • To study postoperative hearing outcomes in older adult cochlear implant recipients who did not meet Medicare candidacy criteria by sentence testing in quiet. (
  • The Relationship Between Spectral Modulation Detection and Speech Recognition: Adult Versus Pediatric Cochlear Implant Recipients. (
  • Cochlear implant recipients have been documented as having a higher rate of postimplantation bacterial meningitis than a cohort of the same age in the general US population ( 3 ). (
  • Pediatric cochlear implant recipients were found to be at higher risk for developing bacterial meningitis than children in the general US population ( 3 ). (
  • Background - Several cochlear implant recipients experience functionality loss due to electrode array mal-positioning. (
  • Other important findings include improved recognition of speech in noise (9 dB improvement) as compared with standard cochlear implant recipients who were matched for speech recognition in quiet and near normal recognition of common melodies. (
  • Addresses auditory skill development and specific intervention strategies and techniques to maximize the auditory potential of pediatric and adult cochlear implant recipients. (
  • Students given necessary knowledge and practical insight to engage families and educators to support cochlear implant recipients and to learn the essential components of the (re)habilitation process and current application in the clinical setting. (
  • range, 67-81 years) cochlear implant recipients (n=7). (
  • These innovations enable our cochlear implant recipients to reach their fullest hearing potential. (
  • Which acoustic speech cues should be optimised for cochlear implant recipients, both via their own residual acoustic hearing (for those that retain some) and through the cochlear implant itself. (
  • In additional experiments, we found that evoked potentials may be clinically useful for assigning frequency-channel mappings in bilateral implant recipients, such as pediatric patients, for which existing psychophysical methods of matching interaural electrodes are unavailable. (
  • Methods: Pediatric cochlear implant recipients who have been tested for GJB2 mutation underwent chart review. (
  • In patients with CMT, cochlear implantation may reconstitute synchronous neural activity by way of supraphysiological electrical stimulation. (
  • Bimodal refers to sound being presented to each ear using a different modality: a cochlear implant on one ear (electrical stimulation) and a hearing aid on the other ear (acoustical stimulation). (
  • A cochlear implant is a device that provides sound perception through direct electrical stimulation of the hearing nerve, bypassing the inner ear - the most common culprit of hearing loss. (
  • The choice of stimulation strategy affects the ability to detect pure tone inter-aural time differences in children with early bilateral cochlear implantation. (
  • In a clinical setting, drug treatment of the SGN could start directly during implantation of a cochlear implant, whereas electrical stimulation begins days to weeks later. (
  • Objective: To evaluate the preservation of low frequency residual hearing after cochlear implant surgery using an electrode for atraumatic implantation and complete cochlear stimulation. (
  • Every electrode array in the HiFocus family delivers focused stimulation through current steering technology - available only from Advanced Bionics - for hearing that more closely resembles normal hearing. (
  • In all commercial cochlear implant (CI) devices, the electric stimulation is performed with a rectangular pulse that generally has two phases of opposite polarity. (
  • b-f ) Representative eABR response traces to increasing stimulation level on E0 (the most apical electrode) to ( b ) rectangular, ( c ) rampUP, ( d ) rampDOWN, and ( e ) rampLONG, all with cathodic-first polarity (mouse M2). (
  • Covers details about cochlear implant sound processing, cochlear electrode stimulation of neurons and other electrophysiological cochlear implant issues. (
  • Addresses how these measures can be used to evaluate cochlear implant function/activity along auditory pathways in response to cochlear implant stimulation. (
  • In addition, the use of these measures to detect unwanted non-auditory responses to cochlear implant stimulation will be discussed. (
  • He explained that EAS-electric acoustic stimulation-combined cochlear implant stimulation for the high pitches with hearing aid amplification for the low pitches. (
  • The effect of direct stimulation of the cochlear nerve with a ring electrode was evaluated, but appeared to be not a viable treatment option as damage of the nerve lead to increase in hearing loss in the majority of patients. (
  • CONCLUSION: During the first year of CI use, the electrical stimulation released by intracochlear electrodes did not cause significant changes of ECAP characteristics, except in the increase of N1 peak amplitude. (
  • Cochlear implant prostheses are designed to create hearing sensation by direct electrical stimulation of auditory neurons (nerves). (
  • Electrically evoked compound action potentials (ECAPs) reflect the response of the auditory nerve to electrical stimulation while electrocochleography (ECochG) reflects the response of the cochlear hair cells and auditory nerve to acoustic stimulation. (
  • Single neuron responses in the inferior colliculus (IC), the main nucleus of the auditory midbrain, were studied using electric stimulation of bilaterally implanted intracochlear electrode arrays. (
  • These results show that bilateral electric stimulation can produce normal ITD tuning in IC neurons and suggest that the interaural timing of current pulses should be accurately controlled if one hopes to design a bilateral cochlear implant processing strategy that provides salient ITD cues. (
  • 7 The electrode-modiolus distance and the preservation of inner ear structures are also important factors. (
  • Implantation was performed using a hearing preservation technique. (
  • Predictive factors for short- and long-term hearing preservation in cochlear implantation with conventional length electrodes. (
  • Hearing Preservation in Pediatric Cochlear Implantation. (
  • Cochlear volume as a predictive factor for residual-hearing preservation after conventional cochlear implantation. (
  • Conclusion: Despite the use of a flexible electrode, complete preservation of low frequency residual hearing can only be achieved in a minority of patients. (
  • Objective: This study is designed to test the hypothesis that preservation of residual hearing in a pediatric population is possible using standard electrode arrays with full-length insertions. (
  • Conclusion: Preservation of residual hearing is feasible in pediatric cochlear implant patients using standard-length electrode arrays with full insertions. (
  • With Triformance, the unique benefits of Structure Preservation , Complete Cochlear Coverage , and FineHearing work together in synergy to maximise hearing performance . (
  • The key to the success of the EASTM Hearing Implant System is the effective preservation of residual hearing through use of especially soft and flexible electrode arrays . (
  • Dr Santa Maria has authored book chapters and published papers and continues his clinical research in these areas, particularly with a focus on hearing preservation in cochlear implant surgery and outcomes of vestibular schwannoma management. (
  • Preoperative high-resolution computed tomography of the temporal bones showed bilateral inner ear malformations of both the cochlear and vestibular labyrinth, conditions consistent with bilateral Mondini deformity ( 5 ). (
  • Recommended screening technologies include oto-acoustic emissions (OAE), which assess cochlear (inner ear) functioning, and auditory brainstem responses (ABR), which record neural activity in response to sounds. (
  • To embed an electronic cochlear implant device into the ear of a deaf patient, the surgeon has to create a precise access from behind the ear, through the skull bone all the way into the inner ear. (
  • A cochlear implant is an electronic device capable of restoring hearing in a profoundly deaf person by directly stimulating the nerve endings in the inner ear. (
  • Conclusion: Pediatric patients with congenital sensorineural hearing loss without other comorbid conditions (eg, developmental delay, inner ear malformations) perform well when they receive cochlear implantation and auditory habilitation. (
  • Demographic data, CT-Scan results and cochlear implantation outcomes (deep or shallow) were evaluated. (
  • Early outcomes after cochlear implantation for adults and children with unilateral hearing loss. (
  • To compare and evaluate long-term safety and effectiveness outcomes obtained with the CAT and with MPTA approach in patients submitted to cochlear implant (CI) surgery. (
  • Main outcomes were complications,audiometric performance and radiological evaluation of electrode position. (
  • The aim of the Bernese research project was to investigate robotic cochlear implantation technology that could lead to a novel implantation procedure with improved hearing outcomes for CI patients. (
  • Post-implantation rehabilitative therapy is often critical to ensuring successful outcomes. (
  • Kronenberg J, Migirov L, Baumgartner W (2002) The suprameatal approach in cochlear implant surgery: our experience with 80 patients. (
  • Mann W, Gosepath J (2006) Technical note: minimal access surgery for cochlear implantation with MedEl devices. (
  • O'Donoghue G, Nikolopoulos T (2002) Minimal access surgery for pediatric cochlear implantation. (
  • Cochlear implant surgery now aims to preserve residual low frequency hearing. (
  • Upon initial activation 3 weeks after surgery, the patient reported excellent access to sound in the cochlear implant-only condition. (
  • The EVO electrode lead has been specifically designed to preserve this residual hearing through surgery. (
  • 2003 - Poland's first cochlear implant surgery for middle ear. (
  • A significant portion of his work is devoted to cochlear implant surgery. (
  • Pre- and post-operative CT images are used routinely for surgery planning and evaluation of cochlear implantation. (
  • Simultaneous cochlear implantation involves the implantation of a cochlear implant into each ear during the same surgery. (
  • Cochlear implant surgery is an invasive procedure for patients with bilateral Sensorineural hearing loss and may cause some risks such as cochlear damage. (
  • Multi-frequency Electrocochleography Measurements can be Used to Monitor and Optimize Electrode Placement During Cochlear Implant Surgery. (
  • The Cochlear Implant Center at the University of South Florida was established in 2000 as a collaborative effort between the USF Department of Otolaryngology-Head and Neck Surgery and the USF Department of Communication Sciences & Disorders. (
  • Navntoft, C. A., Marozeau, J., Barkat, T. R. Cochlear Implant Surgery and Electrically-evoked Auditory Brainstem Response Recordings in C57BL/6 Mice. (
  • Long-term follow-up data showed that the transcanal route to cochleostomy, combined with a reduced posterior tympanotomy, is a safe alternative approach in cochlear implant surgery, with no related major complications and fewer cases of electrode migration when compared with the MPTA. (
  • Her parents, Mark and Mia from Houtbay in Cape Town, are hopeful that a cochlear implant surgery on Monday will finally allow their daughter to hear their voices, along with the rich sounds of the world. (
  • Cohen NL, Hoffman RA (1991) Complications of cochlear implant surgery in adults and children. (
  • Our results encourage us that we have addressed many of the challenges of using a robot for cochlear implantation surgery," Caversaccio adds. (
  • The vast majority are in developed countries due to the high cost of the device, surgery and post-implantation therapy. (
  • Intervention: Cochlear implantation using a modified "soft surgery" protocol. (
  • For many users, bilateral cochlear implantation is a consideration - either at the time of their first surgery or later on after they have had an opportunity to gain experience using a cochlear implant. (
  • There is increasing interest in ensuring that, for individuals with profound hearing loss who have some residual hearing, such hearing can be preserved after cochlear implant surgery. (
  • A cochlear implant is an electronic device that is implanted during surgery. (
  • The cochlear implant is designed for patients with sensorineural hearing loss that have failed conventional treatment including medications and hearing aids. (
  • Cochlear implantation is the standard treatment for children and adults affected by severe and severe-to-profound sensorineural hearing loss. (
  • Patel NS, Link MJ, Driscoll CLW, Neff BA, Van Gompel JJ, Lane JI, Carlson ML . Involvement of the Cochlear Aqueduct by Jugular Paraganglioma Is Associated With Sensorineural Hearing Loss. (
  • The most successful type of rehabilitation in severe-to-profound sensorineural hearing loss is cochlear implantation. (
  • Early reports demonstrated that cochlear implantation for unilateral sensorineural hearing loss can restore some binaural benefits for speech perception and localization. (
  • There was no statistical difference between patients with and without GJB2-related congenital sensorineural hearing loss with regard to openset and closed-set speech recognition performance at 12, 24, and 36 months after cochlear implantation. (
  • Postoperative imaging after cochlear implantation is usually performed by conventional cochlear view (X-ray) or by multislice computed tomography (MSCT). (
  • To review the postoperative radiographic investigations of patients implanted with a cochlear implant. (
  • Because of the magnetic field of the receiver/stimulator unit of the cochlear implant and the magnet of the external transmitting coil of the speech processor, it seems to be possible that the extracochlear ball electrode can migrate in the space between the temporal bone and the temporal muscle during the postoperative healing phase. (
  • The electrode position was controlled by conventional radiography on the first postoperative day. (
  • Cunningham CD, Slattery WH, Luxford WM (2004) Postoperative infection in cochlear implant patients. (
  • The cochlear nerve fibers originate from neurons of the SPIRAL GANGLION and project peripherally to cochlear hair cells and centrally to the cochlear nuclei (COCHLEAR NUCLEUS) of the BRAIN STEM. (
  • Synchrotron Radiation-Based Reconstruction of the Human Spiral Ganglion: Implications for Cochlear Implantation. (
  • and Cochlear Corporation for developing a cochlear implant to our specifications, providing initial devices at no cost, and sharing data from their ongoing clinical trial with the Hybrid implant. (
  • 10 . An implantable device according claim 1 , wherein the fluid storage reservoir and the at least one fluid delivery port cooperate to preferentially deliver more therapeutic fluid closer to an apical end of the electrode carrier. (
  • Promontory cochleostomy could be recommended when electrode apical diameter exceeded maximal RWM exposure. (
  • When the difference between EABR wave eV latencies at the threshold level was analyzed with respect to electrode regions, significant difference was found between basal and apical regions (p=0.03). (
  • The analysis among the electrodes has shown that the apical ones have presented higher N1 amplitudes and p-NRT values, statistically lower than the thresholds of apical electrodes. (
  • ECAP amplitudes recorded from the most apical electrode were significantly correlated with CNC scores measured in the E alone ( r = 0.56) and A+E conditions ( r = 0.64), but not with performance on the AzBio test. (
  • ECochG responses recorded using the most apical electrode in the intracochlear array but evoked using a 500 Hz tone burst were not correlated with either the scores on the CNC or AzBio tests. (
  • The Cochlear lateral wall electrodes (straight research arrays) ( \(N=2\) ) had minimal trauma with 20 and 21 of 22 electrodes intracochlear. (
  • Thresholds and maximum comfortable loudness levels were measured in postlingually deaf adults using all available sites in their electrode arrays. (
  • Automatic Cochlear Duct Length Estimation for Selection of Cochlear Implant Electrode Arrays. (
  • Electrode location and audiologic performance after cochlear implantation in adults: a comparison of CI422 and CI512 electrode arrays. (
  • Guinea pigs were implanted with unstructured control or surface structured electrode arrays for 4 weeks. (
  • However, the limited use of this species as a CI model is mainly due to the difficulty of implanting small electrode arrays. (
  • The internal device is surgically implanted under the skin and is comprised of a receiver, a magnet, and a bundle of fine wires, the electrode array. (
  • The cochlear implant, in basic terms, consists of an external processor, and two surgically implanted components: a receiver and an electrode. (
  • A cochlear implant is a surgically implanted device that helps to restore hearing for most severe hearing impaired patients. (
  • A surgically implanted device that allows a deaf person to hear using electrodes which send pulses to the brain to transmit sound. (
  • A cochlear implant (CI) is a surgically implanted electronic device that provides a sense of sound to a person who is profoundly deaf or severely hard of hearing. (
  • Karimnejad K, Akhter AS, Walen SG et al (2017) The temporoparietal fascia flap for coverage of cochlear reimplantation following extrusion. (
  • Cochlear nerve lies anteroinferiorly (arrow).C, Right side shows a deformed contour of the IAC (black arrow). (
  • The cochlear nerve is absent in this patient with normal facial nerve function. (
  • SNHL in CMT is hypothesized to result from disruption of synchronous activity of the cochlear nerve. (
  • The cochlear part of the 8th cranial nerve (VESTIBULOCOCHLEAR NERVE). (
  • Tinnitus can be classified as peripheral or central: Peripheral tinnitus is defined as resulting from aberrant neural activity in the cochlear nerve propagating all the way up to the auditory centers, while central tinnitus is defined as resulting from aberrant neural activity generated in the auditory centers, when cochlear spontaneous activity is reduced or absent (in the case of severe hearing loss) ( Noreña, 2015 ). (
  • A cochlear implant (CI) is a neural prosthetic device that restores hearing by directly stimulating the auditory nerve with an electrode array. (
  • To improve the electrode nerve interface in these patients, it is aimed at a reduction of tissue formation around the electrode array after implantation. (
  • Although this approach has been used for implantation in patients with common cavity malformations, in patients with this anomaly and severe abnormalities of the middle ear, this approach may be technically difficult and makes the facial nerve vulnerable to injury. (
  • These limitations are in particular caused by the spread of current induced by each electrode and by the poor efficiency between the electrical pulse and auditory-nerve responses. (
  • As a consequence, each intracochlear electrode activates an inappropriately broad range of auditory nerve fibers and the number of independent channels that a CI user can perceive is thus reduced from a maximum of 22 physical electrodes to about 6-8 1 . (
  • Tinnitus can be the result of compression of the cochlear nerve with a blood vessel (neurovascular conflict). (
  • INTRODUCTION: In Cochlear Implant (CI) users, the recording of the electrically evoked compound action potential (ECAP) of the auditory nerve represents the most effective way to assess the auditory nerve in response to electrical stimulus and the interaction between the electrode and the neural tissue. (
  • In the first return, recovery time of the refractory state of the auditory nerve was in most subjects equals to 1000 Mius for E5, and equals to 2000 Mius for electrodes E5, E10 and E15. (
  • and electrodes, that collect impulses and sends them to the auditory nerve. (
  • Vascular Trauma During Cochlear Implantation: A Contributor to Residual Hearing Loss? (
  • Some candidates to cochlear implantation can have residual low frequencies hearing. (
  • Hybrid devices preserve residual hearing in an ear by using both cochlear implant technology and a traditional hearing aid apparatus in the same ear. (
  • This study documents the importance of preserving residual low-frequency acoustic hearing as those with more residual hearing are selected for cochlear implantation. (
  • The effects of residual hearing in traditional cochlear implant candidates after implantation with a conventional electrode," Otology & Neurotology, vol. (
  • Traditional oral approaches focus on developing the residual hearing of a child who is deaf or hard-of-hearing by utilizing hearing aids or a cochlear implant. (
  • PATIENTS: Thirty-one severely to profoundly hearing impaired pediatric patients with some residual hearing precochlear implantation. (
  • Cochlear Implant Electrode Localization Using an Ultra-High Resolution Scan Mode on Conventional 64-Slice and New Generation 192-Slice Multi-Detector Computed Tomography. (
  • Preoperative high-resolution computed tomography (HRCT) scan which forms an integral part of cochlear implant workup is a useful tool to calculate CDL using 3D reconstructions. (
  • After cochlear implantation with different implant types, flat panel CT scan (Philips Allura) was performed in 31 adult patients. (
  • In all 31 patients cochlear implant electrode array and topographical position could be distinguished exactly. (
  • CI Surgeon will assume an expanding role in evaluating affected patients as the frequency of cochlear implantation continues to increase. (
  • Our results corroborate two earlier reports that cochlear implantation is a viable option for rehabilitation of SNHL in this unique subset of patients. (
  • Although a cochlear implant (CI) is the only treatment that can restore hearing to an ear with SPHL, current candidacy criteria often disallows this option for patients with asymmetric hearing. (
  • To determine if postlingually deaf adult cochlear implant (CI) users have better environmental sound awareness (ESA) compared with adult patients eligible for CIs who have not yet undergone implantati. (
  • What percent of patients will have new bone growth covering the round window niche and membrane during cochlear implantation? (
  • Cochlear implantation is a life-changing event to many patients with hearing losses that are not effectively managed with well-fit hearing aids. (
  • This study was conducted in a retrospective and cross-sectional study on 39 patients undergoing cochlear implantation with MED-EL Device. (
  • A third group, patients who were born deaf but did not seek cochlear implantation until their late teens or later, sometimes may benefit but not nearly as much as those in the other two groups. (
  • Implanted electrodes used to control muscle spasms in Parkinson's disease patients were found to reduce the sound of tinnitus, even though they were not implanted in the auditory cortex, where hearing occurs. (
  • The findings could benefit the development of improved rehabilitation tools, clinical protocols, devices, and processing strategies to improve social communication and quality of life in cochlear implant patients. (
  • Such improvements are urgently needed to improve social communication and quality of life in cochlear implant patients. (
  • The study was conducted on all patients presenting with soft tissue reaction post-cochlear implant in a tertiary care referral institute from March 2011 to June 2018. (
  • Costeloe A, Vandjelovic ND, Evans MA, Saraiya SS (2018) The use of honey in cochlear implant associated wounds in pediatric patients. (
  • The aim of this case series was to assess the impact of auditory rehabilitation with cochlear implantation on the cognitive function of elderly patients over time. (
  • These data have implications for cochlear implantation in pediatric patients who are at higher risk of progressive hearing loss than adults. (
  • Specifically, CI research for SSD patients who sought cochlear implantation as a treatment for incapacitating tinnitus 5 has been ongoing for more than 10 years. (
  • In 2019, MED-EL became the first cochlear implant manufacturer to obtain FDA approval for cochlear implantation in SSD patients and for patients with asymmetric SNHL (also abbreviated AHL) ages 5 years and older. (
  • Data from the University of North Carolina at Chapel Hill, along with the published body of literature, has demonstrated that cochlear implantation for appropriate patients with SSD is effective in the restoration of binaural hearing. (
  • All patients received cochlear implantation at a tertiary referral center, followed by outpatient auditory habilitation. (
  • We focused on electrode diameter depending on exposure of round window membrane (RWM) as calculated on preoperative CT. (
  • Combined electrical and acoustical speech processing has enabled this group of volunteers to gain improved word understanding as compared with their preoperative hearing with bilateral hearing aids and a group of individuals receiving a standard cochlear implant with similar experience with their device. (
  • Preoperative measurement of CDL is particularly important when precise intracochlear electrode array placement is desired. (
  • speech perception testing after seven months showed improvement from 0% to 32% on AzBio sentence and 53% on CNC phoneme testing in the cochlear implant-only condition. (
  • Repeated testing of his hearing and speech perception with the cochlear implant showed no deterioration. (
  • This is a longitudinal case series of prospective data assessing neurocognitive function and speech perception in an elderly cohort pre- and post-implantation. (
  • Speech perception testing using Consonant-Nucleus-Consonant words was performed prior to implantation and at regular intervals postoperatively. (
  • Five neurocognitive tests were predictive of improved speech perception following implantation. (
  • Due to patient reports of multiple benefits after implantation, the impact of CI on speech perception, localization, and quality of life has been re-evaluated and studied extensively in the SSD population. (
  • It is also notable that it is often possible to immediately evoke sound sensation during the intraoperative measurements after a successful implantation. (
  • Interventional and intraoperative MRI approaches to deep brain stimulator implantation are relatively new, and in their purest form represent a distinct departure from traditional stereotactic techniques. (
  • Although this risk is small, it is important for children and adults with a cochlear implant to be vaccinated. (
  • It consists of bipolar cells that send fibers peripherally to the organ of Corti and centrally to the cochlear nuclei of the brainstem. (
  • External components of the cochlear implant include a microphone, speech processor and an RF transducer or primary headpiece coil. (
  • The internal and external components of the cochlear implant are connected via an electric coupling. (
  • The experimental use of flat-panel high-resolution CT in temporal bone specimens was evaluated with regard to position of electrode array and with special concern on documentation of the highest possible accuracy in cranial base navigation [ 3 , 6 , 7 ]. (
  • The placement of the electrode array was evaluated by using multiplanar reconstructed conebeam CT images. (
  • In 7.9% of the cases, the electrode array showed scalar dislocation. (
  • It has a microphone, speech processor, transmitter and an electrode array. (
  • In the two remaining cases, the electrode array was reloaded into a back-up sheath, and reinserted into the scala tympani successfully through an extended round window approach. (
  • In a revolutionary series of experimental surgeries, Michael Seidman, MD , and his team have now shown that an electrode array implanted directly into the auditory cortex area of the brain can control tinnitus levels. (
  • During the first 2-3 weeks after implantation of a cochlear implant electrode array, the electrical impedance at the electrode contacts increases. (
  • This increase is typically explained by the formation of fibrous tissue around the electrode array. (
  • In the current study we generated nanostructures directly on the surfaces of cochlear implant electrodes and tested their potential to reduce connective tissue formation around the electrode array in vivo by means of electrophysiological measurements. (
  • This transmastoid labyrinthotomy approach to the common cavity is an effective and simple technique for placing the electrode array. (
  • A stimulator can include a control module (with a pulse generator), one or more leads, and an array of stimulator electrodes on each lead. (
  • In this specific case, 6 weeks later, the implant was explanted due to acute meningitis, and the electrode array was left as a spacer. (
  • By aligning the electrodes with the positions of the auditory ganglia contacting the basilar membrane as described by the Greenwood function, the cochlear implant electrode array stimulates auditory ganglia associated with the reception of frequencies associated with speech recognition. (
  • In this report, we describe in detail the protocol for acute deafening and cochlear implantation of an electrode array in the C57BL/6 mouse strain. (
  • and inflating said catheter-like tube in-vivo so as to partly unroll or uncoil said array, thereby positioning the array electrodes in close proximity to the scala walls. (
  • A cochlear implant is a device for the rehabilitation of severe to profound hearing loss. (
  • A cochlear implant is a device designed for the severely hard of hearing and the deaf. (
  • I'll review the auditory perceptual disadvantages caused by unilateral hearing loss, and the advantages of bilateral hearing, which is the rationale for bilateral cochlear implantation. (
  • The skull was breached and electrodes were implanted in the opposing auditory cortex for the patient who had unilateral tinnitus and in the dominant ear of the patient who had bilateral tinnitus. (
  • These terms are: bilateral, bimodal, and binaural hearing, as well as simultaneous and sequential bilateral implantation. (
  • The advantages of bilateral implantation make it an important topic for parents, children, and adult hearing implant users. (
  • f ) Example responses to Rec (black) and rampUP (green) on all four intracochlear electrodes, both with anodic-first polarity (mouse M7). (
  • Four Years of Experience with Cochlear Prosthesis", I.J. Hochmair-Desoyer et al. (
  • When only portions of the mandible are replaced, it is referred to as MANDIBULAR PROSTHESIS IMPLANTATION. (
  • The Greenwood function is species-dependent and has shown to be preserved in mammals when normalized to the species-dependent range of auditory frequencies and cochlear spiral length (Greenwood 1990). (
  • The Scala Vestibuli for Cochlear Implantation--Anatomic Study", A.J.Gulya et al. (
  • Furthermore, the SSM has been incorporated into a segmentation algorithm, effectively leading to the estimation of patient-specific high-detail cochlear shape from low resolution clinical data. (
  • Itayem DA, Sladen D, Driscoll CL, Neff BA, Beatty CW, Carlson ML . Cochlear Implant Associated Labyrinthitis: A Previously Unrecognized Phenomenon With a Distinct Clinical and Electrophysiological Impedance Pattern. (
  • Records were reviewed of 21 individuals participating in an Food and Drug Administration (FDA) feasibility clinical trial who have received an Iowa/Nucleus 10 mm electrode. (
  • Clinical case examples provided as a tool to illustrate common clinical practices and procedures in cochlear implant programming. (
  • Student should acquire a working knowledge that will facilitate the successful management of cochlear implant programming in clinical settings. (
  • A clinical case of bilateral congenital ear malformation (right ear: cochlear aplasia, left ear: incomplete partition type I), in which minor trauma led to perforation of the left stapes footplate in the middle ear, is also presented. (
  • A Prospective Study of the Effect of Cochlear Implantation on Tinnitus. (
  • Previous studies have shown diverse and sometimes even contrary results concerning the effect of cochlear implantation on tinnitus and the factors that can influence this effect. (
  • Cochlear implantation with Cochlear Nucleus 24 Contour and Cochlear Nucleus Freedom (Cochlear Corp., Lane Cove, New South Wales, Australia) implant. (
  • The last case had cochlear implantation in the ear with congenital aural atresia. (
  • This study addressed the efficiency of cochlear implantation in cases of Seckel syndrome, complete atrioventricular block managed with cardiac pacemaker, congenital aural atresia and posterior fossa arachnoid cyst. (
  • The FDA's original approval of implantation in prelingually deaf children was granted without full benefit of information on language acquisition, on childcaregiver communication, and on the lived experience of being deaf. (
  • We call for the FDA (and similar agencies in other countries) to review its approval of cochlear implantation in prelingually deaf children who are within the sensitive period for language acquisition. (
  • Unlike natural hearing, the cochlear implant uses digital, electronic signals, demanding adequate cognitive function, which is an important factor during the patient selection procedure. (
  • Both POD and POCD can postpone the start of rehabilitation after a cochlear implantation and influence the efficiency of the procedure. (
  • Although cochlear implantation has been almost a standard otological procedure worldwide, it may still create a dilemma for the surgeon in some unusual instances such as Seckel syndrome, aural atresia and posterior fossa arachnoid cyst. (