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.Audiometry, Pure-Tone: Measurement of hearing based on the use of pure tones of various frequencies and intensities as auditory stimuli.Audiometry, Evoked Response: 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.Auditory Threshold: The audibility limit of discriminating sound intensity and pitch.Hearing Loss, High-Frequency: Hearing loss in frequencies above 1000 hertz.Hearing Disorders: Conditions that impair the transmission of auditory impulses and information from the level of the ear to the temporal cortices, including the sensorineural pathways.Acoustic Impedance Tests: Objective tests of middle ear function based on the difficulty (impedance) or ease (admittance) of sound flow through the middle ear. These include static impedance and dynamic impedance (i.e., tympanometry and impedance tests in conjunction with intra-aural muscle reflex elicitation). This term is used also for various components of impedance and admittance (e.g., compliance, conductance, reactance, resistance, susceptance).Hearing Loss, Noise-Induced: Hearing loss due to exposure to explosive loud noise or chronic exposure to sound level greater than 85 dB. The hearing loss is often in the frequency range 4000-6000 hertz.Hearing Loss: A general term for the complete or partial loss of the ability to hear from one or both ears.Hearing Tests: Part of an ear examination that measures the ability of sound to reach the brain.Noise, Occupational: Noise present in occupational, industrial, and factory situations.Hearing: The ability or act of sensing and transducing ACOUSTIC STIMULATION to the CENTRAL NERVOUS SYSTEM. It is also called audition.Tinnitus: 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.Acoustic Stimulation: Use of sound to elicit a response in the nervous system.Otoacoustic Emissions, Spontaneous: Self-generated faint acoustic signals from the inner ear (COCHLEA) without external stimulation. These faint signals can be recorded in the EAR CANAL and are indications of active OUTER AUDITORY HAIR CELLS. Spontaneous otoacoustic emissions are found in all classes of land vertebrates.Hearing Loss, Sensorineural: 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.Ear Protective Devices: Personal devices for protection of the ears from loud or high intensity noise, water, or cold. These include earmuffs and earplugs.Evoked Potentials, Auditory, Brain Stem: 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.Auditory Fatigue: Loss of sensitivity to sounds as a result of auditory stimulation, manifesting as a temporary shift in auditory threshold. The temporary threshold shift, TTS, is expressed in decibels.Pitch Discrimination: The ability to differentiate tones.Hearing Loss, Conductive: Hearing loss due to interference with the mechanical reception or amplification of sound to the COCHLEA. The interference is in the outer or middle ear involving the EAR CANAL; TYMPANIC MEMBRANE; or EAR OSSICLES.Audiometry, Speech: Measurement of the ability to hear speech under various conditions of intensity and noise interference using sound-field as well as earphones and bone oscillators.Noise: Any sound which is unwanted or interferes with HEARING other sounds.Pitch Perception: A dimension of auditory sensation varying with cycles per second of the sound stimulus.Bone Conduction: Transmission of sound waves through vibration of bones in the SKULL to the inner ear (COCHLEA). By using bone conduction stimulation and by bypassing any OUTER EAR or MIDDLE EAR abnormalities, hearing thresholds of the cochlea can be determined. Bone conduction hearing differs from normal hearing which is based on air conduction stimulation via the EAR CANAL and the TYMPANIC MEMBRANE.Evoked Potentials, Auditory: The electric response evoked in the CEREBRAL CORTEX by ACOUSTIC STIMULATION or stimulation of the AUDITORY PATHWAYS.Auditory Perception: The process whereby auditory stimuli are selected, organized, and interpreted by the organism.Auditory Cortex: The region of the cerebral cortex that receives the auditory radiation from the MEDIAL GENICULATE BODY.Psychoacoustics: The science pertaining to the interrelationship of psychologic phenomena and the individual's response to the physical properties of sound.Otoscopy: Examination of the EAR CANAL and eardrum with an OTOSCOPE.Auditory Diseases, Central: Disorders of hearing or auditory perception due to pathological processes of the AUDITORY PATHWAYS in the CENTRAL NERVOUS SYSTEM. These include CENTRAL HEARING LOSS and AUDITORY PERCEPTUAL DISORDERS.Sound: A type of non-ionizing radiation in which energy is transmitted through solid, liquid, or gas as compression waves. Sound (acoustic or sonic) radiation with frequencies above the audible range is classified as ultrasonic. Sound radiation below the audible range is classified as infrasonic.Reflex, Acoustic: Intra-aural contraction of tensor tympani and stapedius in response to sound.Tympanoplasty: Surgical reconstruction of the hearing mechanism of the middle ear, with restoration of the drum membrane to protect the round window from sound pressure, and establishment of ossicular continuity between the tympanic membrane and the oval window. (Dorland, 28th ed.)Auditory Pathways: NEURAL PATHWAYS and connections within the CENTRAL NERVOUS SYSTEM, beginning at the hair cells of the ORGAN OF CORTI, continuing along the eighth cranial nerve, and terminating at the AUDITORY CORTEX.Neural Analyzers: A term used in Eastern European research literature for the functional neural unit that provides the basis for differential sensitivity; the analyzer consists of receptor, afferent nerves, and their central connections. (From Campbell's Psychiatric Dictionary, 8th ed.)Music: Sound that expresses emotion through rhythm, melody, and harmony.Hearing Aids: 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)Auditory Perceptual Disorders: Acquired or developmental cognitive disorders of AUDITORY PERCEPTION characterized by a reduced ability to perceive information contained in auditory stimuli despite intact auditory pathways. Affected individuals have difficulty with speech perception, sound localization, and comprehending the meaning of inflections of speech.Ear Diseases: Pathological processes of the ear, the hearing, and the equilibrium system of the body.Vestibular Diseases: 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.Vertigo: An illusion of movement, either of the external world revolving around the individual or of the individual revolving in space. Vertigo may be associated with disorders of the inner ear (EAR, INNER); VESTIBULAR NERVE; BRAINSTEM; or CEREBRAL CORTEX. Lesions in the TEMPORAL LOBE and PARIETAL LOBE may be associated with FOCAL SEIZURES that may feature vertigo as an ictal manifestation. (From Adams et al., Principles of Neurology, 6th ed, pp300-1)Otosclerosis: 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.Cochlear Nerve: 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.Stapes Surgery: 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.Loudness Perception: The perceived attribute of a sound which corresponds to the physical attribute of intensity.Hearing Loss, Functional: Hearing loss without a physical basis. Often observed in patients with psychological or behavioral disorders.Speech Perception: 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).Hearing Loss, Bilateral: Partial hearing loss in both ears.Vestibular Function Tests: A number of tests used to determine if the brain or balance portion of the inner ear are causing dizziness.Sound Spectrography: The graphic registration of the frequency and intensity of sounds, such as speech, infant crying, and animal vocalizations.Muscle Tonus: The state of activity or tension of a muscle beyond that related to its physical properties, that is, its active resistance to stretch. In skeletal muscle, tonus is dependent upon efferent innervation. (Stedman, 25th ed)Tectum Mesencephali: The dorsal portion or roof of the midbrain which is composed of two pairs of bumps, the INFERIOR COLLICULI and the SUPERIOR COLLICULI. These four colliculi are also called the quadrigeminal bodies (TECTUM MESENCEPHALI). They are centers for visual sensorimotor integration.Cochlea: 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.Electronystagmography: Recording of nystagmus based on changes in the electrical field surrounding the eye produced by the difference in potential between the cornea and the retina.Ear, Middle: The space and structures directly internal to the TYMPANIC MEMBRANE and external to the inner ear (LABYRINTH). Its major components include the AUDITORY OSSICLES and the EUSTACHIAN TUBE that connects the cavity of middle ear (tympanic cavity) to the upper part of the throat.Voice: The sounds produced by humans by the passage of air through the LARYNX and over the VOCAL CORDS, and then modified by the resonance organs, the NASOPHARYNX, and the MOUTH.Olivary Nucleus: A part of the MEDULLA OBLONGATA situated in the olivary body. It is involved with motor control and is a major source of sensory input to the CEREBELLUM.Ear: The hearing and equilibrium system of the body. It consists of three parts: the EXTERNAL EAR, the MIDDLE EAR, and the INNER EAR. Sound waves are transmitted through this organ where vibration is transduced to nerve signals that pass through the ACOUSTIC NERVE to the CENTRAL NERVOUS SYSTEM. The inner ear also contains the vestibular organ that maintains equilibrium by transducing signals to the VESTIBULAR NERVE.Textile Industry: The aggregate business enterprise of manufacturing textiles. (From Random House Unabridged Dictionary, 2d ed)Inferior Colliculi: The posterior pair of the quadrigeminal bodies which contain centers for auditory function.Perceptual Masking: The interference of one perceptual stimulus with another causing a decrease or lessening in perceptual effectiveness.Basilar Membrane: A basement membrane in the cochlea that supports the hair cells of the ORGAN OF CORTI, consisting keratin-like fibrils. It stretches from the SPIRAL LAMINA to the basilar crest. The movement of fluid in the cochlea, induced by sound, causes displacement of the basilar membrane and subsequent stimulation of the attached hair cells which transform the mechanical signal into neural activity.Echolocation: An auditory orientation mechanism involving the emission of high frequency sounds which are reflected back to the emitter (animal).Chiroptera: Order of mammals whose members are adapted for flight. It includes bats, flying foxes, and fruit bats.Semicircular Canals: Three long canals (anterior, posterior, and lateral) of the bony labyrinth. They are set at right angles to each other and are situated posterosuperior to the vestibule of the bony labyrinth (VESTIBULAR LABYRINTH). The semicircular canals have five openings into the vestibule with one shared by the anterior and the posterior canals. Within the canals are the SEMICIRCULAR DUCTS.Neuroma, Acoustic: A benign SCHWANNOMA of the eighth cranial nerve (VESTIBULOCOCHLEAR NERVE), mostly arising from the vestibular branch (VESTIBULAR NERVE) during the fifth or sixth decade of life. Clinical manifestations include HEARING LOSS; HEADACHE; VERTIGO; TINNITUS; and FACIAL PAIN. Bilateral acoustic neuromas are associated with NEUROFIBROMATOSIS 2. (From Adams et al., Principles of Neurology, 6th ed, p673)Signal Detection, Psychological: Psychophysical technique that permits the estimation of the bias of the observer as well as detectability of the signal (i.e., stimulus) in any sensory modality. (From APA, Thesaurus of Psychological Index Terms, 8th ed.)Vestibulocochlear Nerve Diseases: 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.Sound Localization: Ability to determine the specific location of a sound source.Reaction Time: The time from the onset of a stimulus until a response is observed.Occupational Exposure: The exposure to potentially harmful chemical, physical, or biological agents that occurs as a result of one's occupation.Magnetoencephalography: The measurement of magnetic fields over the head generated by electric currents in the brain. As in any electrical conductor, electric fields in the brain are accompanied by orthogonal magnetic fields. The measurement of these fields provides information about the localization of brain activity which is complementary to that provided by ELECTROENCEPHALOGRAPHY. Magnetoencephalography may be used alone or together with electroencephalography, for measurement of spontaneous or evoked activity, and for research or clinical purposes.Presbycusis: Gradual bilateral hearing loss associated with aging that is due to progressive degeneration of cochlear structures and central auditory pathways. Hearing loss usually begins with the high frequencies then progresses to sounds of middle and low frequencies.Cross-Sectional Studies: Studies in which the presence or absence of disease or other health-related variables are determined in each member of the study population or in a representative sample at one particular time. This contrasts with LONGITUDINAL STUDIES which are followed over a period of time.Occupational Diseases: Diseases caused by factors involved in one's employment.Cochlear Nucleus: The brain stem nucleus that receives the central input from the cochlear nerve. The cochlear nucleus is located lateral and dorsolateral to the inferior cerebellar peduncles and is functionally divided into dorsal and ventral parts. It is tonotopically organized, performs the first stage of central auditory processing, and projects (directly or indirectly) to higher auditory areas including the superior olivary nuclei, the medial geniculi, the inferior colliculi, and the auditory cortex.Time Factors: Elements of limited time intervals, contributing to particular results or situations.Cochlear Implants: 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.Vocalization, Animal: Sounds used in animal communication.Time Perception: The ability to estimate periods of time lapsed or duration of time.Hearing Loss, Sudden: 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.Case-Control Studies: Studies which start with the identification of persons with a disease of interest and a control (comparison, referent) group without the disease. The relationship of an attribute to the disease is examined by comparing diseased and non-diseased persons with regard to the frequency or levels of the attribute in each group.Prospective Studies: 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.Tympanic Membrane: An oval semitransparent membrane separating the external EAR CANAL from the tympanic cavity (EAR, MIDDLE). It contains three layers: the skin of the external ear canal; the core of radially and circularly arranged collagen fibers; and the MUCOSA of the middle ear.Gerbillinae: A subfamily of the Muridae consisting of several genera including Gerbillus, Rhombomys, Tatera, Meriones, and Psammomys.Electrodes, Implanted: Surgically placed electric conductors through which ELECTRIC STIMULATION is delivered to or electrical activity is recorded from a specific point inside the body.Functional Laterality: Behavioral manifestations of cerebral dominance in which there is preferential use and superior functioning of either the left or the right side, as in the preferred use of the right hand or right foot.Discrimination (Psychology): Differential response to different stimuli.Neurons: The basic cellular units of nervous tissue. Each neuron consists of a body, an axon, and dendrites. Their purpose is to receive, conduct, and transmit impulses in the NERVOUS SYSTEM.Guinea Pigs: A common name used for the genus Cavia. The most common species is Cavia porcellus which is the domesticated guinea pig used for pets and biomedical research.Cochlear Implantation: 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.Vibration: A continuing periodic change in displacement with respect to a fixed reference. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)Callithrix: A genus of the subfamily CALLITRICHINAE occurring in forests of Brazil and Bolivia and containing seventeen species.Deafness: A general term for the complete loss of the ability to hear from both ears.Brain Mapping: Imaging techniques used to colocalize sites of brain functions or physiological activity with brain structures.Echo-Planar Imaging: A type of MAGNETIC RESONANCE IMAGING that uses only one nuclear spin excitation per image and therefore can obtain images in a fraction of a second rather than the minutes required in traditional MRI techniques. It is used in a variety of medical and scientific applications.Hair Cells, Auditory: 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.Cats: The domestic cat, Felis catus, of the carnivore family FELIDAE, comprising over 30 different breeds. The domestic cat is descended primarily from the wild cat of Africa and extreme southwestern Asia. Though probably present in towns in Palestine as long ago as 7000 years, actual domestication occurred in Egypt about 4000 years ago. (From Walker's Mammals of the World, 6th ed, p801)Action Potentials: Abrupt changes in the membrane potential that sweep along the CELL MEMBRANE of excitable cells in response to excitation stimuli.Reference Values: The range or frequency distribution of a measurement in a population (of organisms, organs or things) that has not been selected for the presence of disease or abnormality.

Age-related hearing loss, vitamin B-12, and folate in elderly women. (1/570)

BACKGROUND: Hearing impairment is 1 of the 4 most prevalent chronic conditions in the elderly. However, the biological basis of age-related hearing loss is unknown. OBJECTIVE: The objective was to test the hypothesis that age-related hearing loss may be associated with poor vitamin B-12 and folate status. DESIGN: A thorough audiometric assessment was conducted in 55 healthy women aged 60-71 y. Hearing function was determined by the average of pure-tone air conduction thresholds at 0.5, 1, 2, and 4 kHz and was categorized into 2 groups for logistic regression analyses: normal hearing (<20 dB hearing level; n = 44) and impaired hearing (> or = 20 dB hearing level; n = 11). RESULTS: Mean age was the same (65 y) for the normal hearing and impaired hearing groups. Pure-tone averages were inversely correlated with serum vitamin B-12 (r = -0.58, P = 0.0001) and red cell folate (r = -0.37, P = 0.01). Women with impaired hearing had 38% lower serum vitamin B-12 (236 compared with 380 pmol/L, respectively, P = 0.008) and 31% lower red cell folate (425 compared with 619 nmol/L, respectively, P = 0.02) than women with normal hearing. Among participants who did not take supplements containing vitamin B-12 or folate, women with impaired hearing had 48% lower serum vitamin B-12 (156 compared with 302 pmol/L, respectively, P = 0.0007) and 43% lower red cell folate (288 compared with 502 nmol/L, respectively, P = 0.001) than women with normal hearing. CONCLUSION: Poor vitamin B-12 and folate status may be associated with age-related auditory dysfunction.  (+info)

A possible neurophysiological basis of the octave enlargement effect. (2/570)

Although the physical octave is defined as a simple ratio of 2:1, listeners prefer slightly greater octave ratios. Ohgushi [J. Acoust. Soc. Am. 73, 1694-1700 (1983)] suggested that a temporal model for octave matching would predict this octave enlargement effect because, in response to pure tones, auditory-nerve interspike intervals are slightly larger than the stimulus period. In an effort to test Ohgushi's hypothesis, auditory-nerve single-unit responses to pure-tone stimuli were collected from Dial-anesthetized cats. It was found that although interspike interval distributions show clear phase-locking to the stimulus, intervals systematically deviate from integer multiples of the stimulus period. Due to refractory effects, intervals smaller than 5 msec are slightly larger than the stimulus period and deviate most for small intervals. On the other hand, first-order intervals are smaller than the stimulus period for stimulus frequencies less than 500 Hz. It is shown that this deviation is the combined effect of phase-locking and multiple spikes within one stimulus period. A model for octave matching was implemented which compares frequency estimates of two tones based on their interspike interval distributions. The model quantitatively predicts the octave enlargement effect. These results are consistent with the idea that musical pitch is derived from auditory-nerve interspike interval distributions.  (+info)

Auditory and electroencephalographic effects of midazolam and alpha-hydroxy-midazolam in healthy subjects. (3/570)

AIMS: Whereas cortical EEG effects of benzodiazepines are well characterized, information about benzodiazepine effects in other areas of the central nervous system is sparse. This study investigated the action of midazolam and its active metabolite alpha-hydroxy-midazolam on different parts of the auditory pathway in six healthy volunteers in a randomized, double-blind, three-way cross-over study. METHODS: Acoustically evoked short (SLP) and middle (MLP) latency potentials, transitory evoked otoacoustic emissions (TEOAE), and EEG power spectra were analysed after short i. v. injections of placebo, or 0.15 mg kg-1 midazolam, or alpha-hydroxy-midazolam, respectively. RESULTS: All subjects fell asleep during the 4 min infusion of active drug. SLP showed a significant transient increase of Jewett wave V 10 min after injection for midazolam and alpha-hydroxy-midazolam while the latency of wave I was unchanged. Both benzodiazepines induced a marked and long-lasting MLP amplitude decrease for 240 min with slow recovery over the following 360 min. No changes of TEOAE were observed. In agreement with earlier reports, increases in EEG beta activity and decreases in alpha activity were observed after administration of either drug. CONCLUSIONS: Systemically administered benzodiazepines modulate the auditory pathway above the level of the cochlea. While SLP changes were closely associated with sedation and high plasma benzodiazepine concentrations, MLP effects persisted for hours after sedation even at low benzodiazepine plasma levels. Evoked potentials may therefore be more sensitive than EEG as a tool to monitor benzodiazepine effects.  (+info)

Functional specificity in the right human auditory cortex for perceiving pitch direction. (4/570)

Previous lesion and functional imaging studies in humans suggest a greater involvement of right rather than left auditory cortical areas in certain aspects of pitch processing. In the present study, adaptive psychophysical procedures were used to determine auditory perceptual thresholds in 14 neurologically normal subjects, and in 31 patients who had undergone surgical resection from either the right or left temporal lobe for the relief of intractable epilepsy. In a subset of the patients, the lesion encroached significantly upon the gyrus of Heschl or its underlying white matter as determined from MRI analysis. Subjects were asked to perform two different perceptual tasks on the same set of stimuli. In a pitch discrimination task, the subject had to decide whether two elements of a pure tone pair were the same or different. In a task requiring the judgement of direction of pitch change, subjects decided whether pitch rose or fell from the first tone to the second. Thresholds were determined by measuring the minimum pitch difference required for correct task performance. Mean thresholds in the pitch discrimination task did not differ between patient groups and control subjects. In contrast, patients with temporal lobe excisions that encroached upon the gyrus of Heschl in the right hemisphere (but not in the left) showed significantly elevated thresholds when judging the direction of pitch change. These findings support a specialization of function linked to right auditory cortical areas for the processing of pitch direction, and specifically suggest a dissociation between simple sensory discrimination and higher order perception.  (+info)

Incidence of presbycusis of Korean populations in Seoul, Kyunggi and Kangwon provinces. (5/570)

Presbycusis, a bilateral sensorineural hearing loss caused by changes in the inner ear, is related to multiple factors such as noise exposure and otologic disease. In institute-based studies, we tried to determine the incidence of presbycusis in Korean populations living in Seoul, Kyunggi and Kangwon provinces by gender and age groups. The subjects were people who had visited health promotion centers. Pure tone audiometry was done over 20 years on 6,028 subjects. In a community-based study, the subjects were elderly residents of Kanghwa-do area. There were no obvious factors that could cause hearing impairment in the subjects. For the pure tone audiometry, hearing threshold was obtained by using the six-dimension method. The incidence of presbycusis for subjects aged 65 years and older was 37.8% and 8.3% for > or = 27 dB HL criterion and > or = 41 dB HL criterion, respectively. The incidence increased with age. A statistically significant difference in the hearing threshold was found between men and women aged 65 years or older. No differences were found between the community-based study and the institute- based studies. There was a high incidence (about 40%) of presbycusis among Koreans aged 65 years or older (for > or = 27 dB HL criterion). With an aging population, we anticipate that this report could be used to provide a basic data for the study of presbycusis.  (+info)

Children's detection of pure-tone signals with random multitone maskers. (6/570)

Preschoolers and adults were asked to detect a 1000-Hz signal, which was masked by a multitone complex. The frequencies and amplitudes of the components in the complex varied randomly and independently on each presentation. A staircase, cued two-interval, forced-choice procedure disguised as a "listening game" was used to obtain signal thresholds in quiet and in the presence of the multitone maskers. The number of components in the masker was fixed within an experimental condition and varied from 2 to 906 across experimental conditions. Thresholds were also measured with a broadband noise masker. Eight preschool children and eight adults were tested. Although individual differences were large, among both adults and children, there was little difference between the groups in the mean amount of masking produced by the maskers with large numbers of components (400 and 906). There was also a small but significant difference between adults and children in the mean amount of masking produced by the broadband noise. The difference between the groups was much larger with smaller numbers of components. Data obtained from the adults were basically similar to that previously reported [cf. Neff and Green, Percept. Psychophys. 41, 409-415 (1987); Oh and Lutfi, J. Acoust. Soc. Am. 104, 3489-3499 (1998)]: maskers comprised of 10-40 components produced as much as 30 to 60 dB of masking in some, but not all listeners. Those same maskers produced larger amounts of masking (70-83 dB) in many of the preschool children, although, as in the adult group, individual differences were large. The component-relative-entropy (CoRE) model [Lutfi, J. Acoust. Soc. Am. 94, 748-758 (1993)] was used to describe the differences in performance between the children and adults. According to this model the average child appears to integrate information over a larger number of auditory filters than the average adult.  (+info)

Hearing restoration from deafness after resection of a large cerebellopontine angle meningioma--case report. (7/570)

A 61-year-old man presented with a large cerebellopontine angle meningioma manifesting as a 1-year history of deafness on the right side, in whom hearing was restored from the deaf state immediately after tumor resection. Neuroimaging demonstrated a large mass in the right cerebellopontine angle, originating at the region adjacent to the jugular foramen. Audiometry showed his hearing was off-scale (> 105 dB) on the right. The tumor was successfully removed through the retrosigmoid approach, and the integrity of the 7th and 8th cranial nerves was maintained. The patient regained hearing on the day after the operation, which continued to improve until near-normal. The 8th cranial nerve function may recover dramatically after removal of non-acoustic tumors, even if preoperative hearing loss is profound. To maximize the opportunity to regain hearing, approaches which devastate cochlear function should be avoided and more meticulous manipulation during tumor removal is needed.  (+info)

Occurrence and risk of cochleotoxicity in cystic fibrosis patients receiving repeated high-dose aminoglycoside therapy. (8/570)

Cystic fibrosis (CF) patients receive repeated courses of aminoglycoside therapy. These patients would consequently be expected to be more susceptible to cochleotoxicity, a recognized side effect with single courses of aminoglycoside therapy. The primary aim of this retrospective study was to establish the incidence and severity of auditory deficit in CF patients. Standard (0.25- to 8-kHz) and high-frequency (10- to 16-kHz) pure-tone audiometry was carried out in 70 CF patients, and the results were compared with the results from 91 control subjects. These subjects were further divided into pediatric and adult groups. Of 70 CF patients, 12 (1 pediatric) displayed hearing loss considered to be caused by repeated exposure to aminoglycosides. There was a nonlinear relationship between the courses of therapy received and the incidence of hearing loss. The severity of the loss did not appear to be related to the number of courses received. Assuming the risk of loss to be independent for each course, preliminary estimates of per course risk of hearing loss were less than 2%. Upon comparison with previous clinical studies and experimental work, these findings suggest that the incidence of cochleotoxicity in CF patients is considerably lower than would be expected, suggesting that the CF condition may confer protection against aminoglycoside cochleotoxicity.  (+info)

*Sensorineural hearing loss

SSHL is diagnosed via pure tone audiometry. If the test shows a loss of at least 30db in three adjacent frequencies, the ... The most common type of hearing test is pure tone audiometry (PTA). It charts the thresholds of hearing sensitivity at a ... There is also high frequency pure tone audiometry which tests frequencies from 8000-20,000 Hz. PTA can be used to differentiate ... Identification of sensorineural hearing loss is usually made by performing a pure tone audiometry (an audiogram) in which bone ...

*Audiogram

pure tone audiometry in Meniere's disease from General Practice Notebook. Retrieved 2012 pure tone audiometry in noise deafness ... pure tone audiometry in otosclerosis from General Practice Notebook. Retrieved 2012 Kashio, A.; Ito, K.; Kakigi, A.; Karino, S ... Levels of hearing loss Online Audiogram Hearing Test Pure tone audiometry in glue-ear Audiogram of Meniere's disease Audiogram ... Hearing range Equal-loudness contour Minimum audibility curve Articulation index Pure tone audiometry Hearing (sense) Audiology ...

*Audiometer

Audiology Audiogram Audiometry Hearing test Pure tone audiometry IEC 60645-1. (November 19, 2001) "Audiometers. Pure-tone ... Bekesy audiometry typically yields lower thresholds and standard deviations than pure tone audiometry. Audiometer requirements ... An audiometer typically transmits recorded sounds such as pure tones or speech to the headphones of the test subject at varying ... The most common type of audiometer generates pure tones, or transmits parts of speech. Another kind of audiometer is the Bekesy ...

*Vestibular schwannoma

Pure tone audiometry should be performed to effectively evaluate hearing in both ears. In some clinics the clinical criteria ...

*Stimulus modality

In pure tone audiometry, an audiometer is used to play a series of tones using headphones. The participants listen to the tones ... Some hearing tests include the whispered speech test, pure tone audiometry, the tuning fork test, speech reception and word ... When two simple tones are put together they create a complex tone. The simple tones of an instrument are called harmonics or ... The test will play with the volume controls and the participant is asked to signal when he or she can no longer hear the tone ...

*Tinnitus

"The Relevance of the High Frequency Audiometry in Tinnitus Patients with Normal Hearing in Conventional Pure-Tone Audiometry". ... Since most persons with tinnitus also have hearing loss, a pure tone hearing test resulting in an audiogram may help diagnose a ... sounds that slightly resemble human voices or even a pure steady tone like that heard during a hearing test. It has also been ... Spontaneous otoacoustic emissions (SOAEs), which are faint high-frequency tones that are produced in the inner ear and can be ...

*Audiology and hearing health professionals in developed and developing countries

Pure-tone audiometry screening, in which there is typically no attempt to find threshold, has been found to accurately assess ... pure-tone audiometry screening, and otoacoustic emissions (OAEs). Otoscopy is useful in the examination of the external ear, ... OAEs can be used in populations where responses to pure-tone audiometry are either unable to be obtained or results are ... ASHA) (1985). Guidelines for identification audiometry. ASHA, 27(5), 49-52. World Health Organization (WHO). (1997). Report of ...

*Minimum audibility curve

Audiogram Hearing range Equal-loudness contour Articulation index Pure tone audiometry Psychoacoustics Hearing (sense) ... Audiology Audiometry A-weighting Hearing Loss by Robert Thayer Sataloff. ...

*Otoacoustic emission

... a composer who used this phenomenon in her music Pure tone audiometry Kemp, D. T. (1 January 1978). "Stimulated acoustic ... Stimulus Frequency OAEs (SFOAEs) are measured during the application of a pure-tone stimulus, and are detected by the vectorial ... brief duration pure tone) stimulus. The evoked response from a click covers the frequency range up to around 4 kHz, while a ... distortion tone, or simple difference tone). Otoacoustic emissions are clinically important because they are the basis of a ...

*Vertigo

Tests of auditory system (hearing) function include pure tone audiometry, speech audiometry, acoustic reflex, ... which is pure vertical/torsional). Central pathology can cause disequilibrium which is the sensation of being off balance. The ...

*Balance disorder

Tests of auditory system (hearing) function include pure-tone audiometry, speech audiometry, acoustic-reflex, ...

*Presbycusis

Pure-tone audiometry for air conduction thresholds at 500, 1000 and 2000 Hz is traditionally used to classify the degree of ... A hearing test administered by a medical doctor, otolaryngologist (ENT) or audiologist including pure tone audiometry and ... One early consequence is that even young adults may lose the ability to hear very high frequency tones above 15 or 16 kHz. ... Abilities of young people to hear high frequency tones inaudible to those over 25 or so has led to the development of ...

*Tympanometry

... assess the sensitivity of hearing and the results of this test should always be viewed in conjunction with pure tone audiometry ... The instrument changes the pressure in the ear, generates a pure tone, and measures the eardrum responses to the sound at ... A tone of 226 Hz is generated by the tympanometer into the ear canal, where the sound strikes the tympanic membrane, causing ...

*Audiometrist

... is a health-care professional technician who has received special training in the use of Pure tone audiometry equipment. An ... The word "Audiometrist" is derived from the word Audiometry, as distinct from Audiology. However, the title audiometrist is ... Additionally, preferences for definitions of audiometrists are more varied worldwide, mainly because Audiometry education and ... http://www.amplivox.ltd.uk/category/courses/audiometry-course/ http://www.npag.org.uk/event/audiometry/ http://www. ...

*Equal-loudness contour

Audiogram A-weighting CCIR (ITU) 468 Noise Weighting dB(A) Listener fatigue Pure tone audiometry Sound level meter Luminosity ... However, research in the 1960s demonstrated that determinations of equal-loudness made using pure tones are not directly ... Fletcher and Munson adjusted the reference tone until the listener perceived that it was the same loudness as the test tone. ... "A re-determination of the equal-loudness relations for pure tones", Br. J. Appl. Phys. 7 (1956), pp.166-181. Yôiti Suzuki, et ...

*Auditory masking

It is also used in various kinds of audiometry, including pure tone audiometry, and the standard hearing test to test each ear ... Combination tones can interact with primary tones resulting in secondary combination tones due to being like their original ... An example of this is 3F1 - 2F2 Secondary combination tones are again similar to the combination tones of the primary tone. Off ... The most important two are cubic difference tones and quadratic difference tones. Cubic difference tones are calculated by the ...

*Conductive hearing loss

Pure tone audiometry, a standardized hearing test over a set of frequencies from 250Hz to 8000Hz, may be conducted by a medical ...

*Aarktica

... in 2002 and Pure Tone Audiometry in 2003. These releases would combine lo-fi electro and shoegaze, with the ambient textures of ... Pure Tone Audiometry (2003) Bleeding Light (2005) Matchless Years (2007) In Sea (2009) Aarktica at AllMusic Aarktica interview ...

*Hearing test

The standard and most common type of hearing test is pure tone audiometry, which measures the air and bone conduction ... In this test a probe is placed in the ear and a loud tone, greater than 70 dBSPL, is produced. The test measures the reflexive ...

*Amblyaudia

... as indexed through pure tone audiometry). These symptoms may lead to difficulty attending to auditory information causing many ...

*List of MeSH codes (E01)

... audiometry MeSH E01.370.382.375.060.050 --- audiometry, evoked response MeSH E01.370.382.375.060.055 --- audiometry, pure-tone ... MeSH E01.370.382.375.060.060 --- audiometry, speech MeSH E01.370.382.375.060.060.750 --- speech discrimination tests MeSH ...

*Audiometry

In conjunction with pure-tone audiometry, it can aid in determining the degree and type of hearing loss. Speech audiometry also ... Immittance audiometry is superior to pure tone audiometry in detecting middle ear pathology. Tympanometry Acoustic reflex ... Audiometry of children Conditioned play audiometry Behavioral observation audiometry Visual reinforcement audiometry Objective ... Weber test Bing test Rinne test Schwabach test, a variant of the Rinne test Pure tone audiometry is a standardized hearing test ...

*Pure tone audiometry

In addition, response to pure tone stimuli may be limited, because in a sound field pure tones create standing waves, which ... Pure tone audiometry (PTA) is the key hearing test used to identify hearing threshold levels of an individual, enabling ... Recommended Procedure: Pure Tone air and bone conduction threshold audiometry with and without masking and determination of ... such as behavioral observation audiometry, visual reinforcement audiometry and play audiometry. Conventional audiometry tests ...

*Hearing range

Ashihara, Kaoru (2007-09-01). "Hearing thresholds for pure tones above 16kHz". The Journal of the Acoustical Society of America ... Hearing (sense) Audiology Audiometry The Mosquito Seismic communication Minimum audibility curve Musical acoustics which ... The present results show that some humans can perceive tones up to at least 28 kHz when their level exceeds about 100 dB SPL. ... Sounds that seem loud to humans often emit high frequency tones that can scare away dogs. Whistles which emit ultrasonic sound ...

*Hearing loss

See also: Audiometry, Pure tone audiometry, Auditory brainstem response, and Otoacoustic emissions ... an instrument used to measure hearing by producing pure tone sounds through a range of frequencies) may not be detected. In ... In conjunction with speech audiometry, it may indicate central auditory processing disorder, or the presence of a schwannoma or ... Total hearing loss or Cophosis: average tone loss is equal or more than 120 dB HL ...

*Vertigo

Tests of auditory system (hearing) function include pure tone audiometry, speech audiometry, acoustic reflex, ... which is pure vertical/torsional).[16][20] Central pathology can cause disequilibrium which is the sensation of being off ...

*Non-invasive intracranial pressure measurement methods

TEOAE is used first to determine the optimum OAE response frequency, after which the pair of pure tones is deployed in a DPOAE ... The displacement can be measured with common tympanometers used for impedance audiometry that are portable and relatively ... This article may require copy editing for grammar, style, cohesion, tone, or spelling. You can assist by editing it. (January ...

*Phyllis Margaret Tookey Kerridge

This was the first site in Great Britain to have a permanent Western Electric Audiometer that used pure-tone testing rather ... and her pioneering work shaping the discipline of audiometry. Phyllis Margaret Tookey was born in 1901, the only daughter of ...
Audiometers are devices employed to evaluate the level of hearing and to quantify and diagnose the degree of hearing loss. Audiometers consist of embedded hardware and a test subject feedback button connected to a pair of headphones. This system is controlled by a standard PC. The method of testing the hearing capacity is known as audiometry. Types of audiometry procedures include pure tone audiometry, immittance audiometry, speech audiometry, and evoked response audiometry. Pure tone audiometry is a process in which a patient is made to hear pure tones such as high-pitched tones at frequent intervals to determine the level of hearing loss. Speech audiometry is similar to pure tone audiometry, in terms of process followed; however, pure tones are replaced by human speech to determine the extent and area of hearing loss. Immittance audiometry is a process in which resistance offered by the ear parts to incoming sound is measured.. The global audiometers market is projected to witness modest ...
Hearing loss treatments centers provide services including comprehensive audiological evaluations, acoustic immittance measures, auditory brainstem testing, hearing aid testing and more. See below for local businesses in Concord that give access to hearing protection dispensing, hearing enhancement, as well as advice and content on assistive listening devices.
Hearing loss treatments centers provide services including comprehensive audiological evaluations, acoustic immittance measures, auditory brainstem testing, hearing aid testing and more. See below for local businesses in Lansing that give access to hearing protection dispensing, hearing enhancement, as well as advice and content on assistive listening devices.
Audiologic Solutions provides complete hearing evaluations, custom ear plugs, tinnitus treatment, speech testing, and more for you to hear at your best.
Based on SENTI FLEX technology, all air and bone pure tone audiometry (incl. MAGIC), speech audiometry features (Freiburger and other universal speech tests) and auditory processing disorder tests (MAUS, BASD) are in this set. Live Speech and automated audiometry based on Hughson Westlake or Bekesy are in!. ...
Looking for online definition of speech audiometry in the Medical Dictionary? speech audiometry explanation free. What is speech audiometry? Meaning of speech audiometry medical term. What does speech audiometry mean?
And Others………. The report provides a basic overview of the Diagnostic Audiometer industry including definitions, segmentation, applications, key vendors, market drivers and market challenges. The Diagnostic Audiometer Market analysis is provided for the international markets including development trends, competitive landscape analysis, and key regions development status. Through the statistical analysis, the report depicts the global Diagnostic Audiometer Industry including capacity, production, production value, cost/profit, supply/demand and import/export. The total market is further divided by company, by country, and by application/type for the competitive landscape analysis.. Table of Contents. Chapter One Diagnostic Audiometer Industry Overview. • Diagnostic Audiometer Definition (Product Picture and Specifications). • Diagnostic Audiometer Classification and Application. • Diagnostic Audiometer Industry Chain Structure. • Diagnostic Audiometer Industry Overview. • ...
BACKGROUND: Self-reported hearing measures are useful for surveying hearing loss in a population because they are short, and easy to administer by either questionnaire or telephone. This study aims to assess the performance of several self-reported hearing measures to identify hearing loss in a group of Iowa farmers. METHODS: The study subjects were 98 male farmers who participated in the Iowa Fa
http://www.healthtouch.com/level1/leaflets/aslha/aslha061.html describes an audiological evaluation, the environment and instruments used in non-medical terms. Questions that the doctor may ask are provided and a brief description of word recognition tests and acoustic immittance. http://acessatlanta.adam.com/ency/article/003341.html discusses how hearing tests (audiometry) are performed, how to prepare for the test, why it is performed, and how it will feel. http://www.gwha.com/projects/hear/comm/what.html provides excerpts from a book entitled, When Your Child is Deaf. Information on age for initial testing, description of auditory brainstem response (ABR), visual response audiometry (VRA), behavioral observational audiometry (BOA), play audiometry, and pure tone tests are all quoted from the book. http://www.mpshu.on.ca/CDS/hearingassess.html gives clear details on what information the audiologist will need on the first visit, what will happen during testing, and what services should be made ...
Pure-tone audiometry is a behavioral test used to measure hearing sensitivity. This measure involves the peripheral and central auditory systems.
Hearing screening should be conducted in a clinical or natural environment that is conducive to obtaining reliable screening results and that is free from auditory and visual distractions and interruptions. In addition, the location should allow for privacy and confidentiality.. Perform daily listening checks to rule out defects in major pure-tone screening components. Ambient noise levels may exceed ANSI standards for pure-tone threshold testing in audiometric test rooms (ANSI, 2013) but must be sufficiently low to allow accurate screening. A sound level meter, if available, may be used to establish maximum permissible noise levels at 25 dB HL for the earphone to be used during screening (i.e., supra-aural or insert earphones). However, when a sound level meter is not available, a biologic check is suitable.. ...
St. Lukas Group offers Audiometry procedures starting from Price on request and it is specialized in Ear, Nose and Throat (ENT) treatments.
Learn more about Audiometry at Sky Ridge Medical Center DefinitionReasons for TestPossible ComplicationsWhat to ExpectCall Your Doctorrevision ...
The industrys newest and only pure tone Audiometer with sequential screening. User friendly, ideally suited for all practices, tests hearing manually or automatic with hard copy
Presbycusis is a type of sensorineural or perceptive hearing loss that is brought on by degeneration of specialized receptor cells of the inner ear. Other relevant information for presbycusis including its symptoms, causes, diagnosis, prevention and remedies have been also included in this page.
... On-line free medical diagnosis assistant. Ranked list of possible diseases from either several symptoms or a full patient history. A similarity measure between symptoms and diseases is provided.
Description of disease Occupational hearing loss. Treatment Occupational hearing loss. Symptoms and causes Occupational hearing loss Prophylaxis Occupational hearing loss
Description of disease Occupational hearing loss. Treatment Occupational hearing loss. Symptoms and causes Occupational hearing loss Prophylaxis Occupational hearing loss
Objective. Deferoxamine therapy in lifelong transfusion-dependent anaemias, as beta-thalassemia major, is associated with an increased risk of ototoxic changes. With increasing survival rates, prevention and/or early detection of ototoxicity are important for providing management options. The predictive value of pure-tone audiometry in early detection of ototoxicity has been questioned, particularly in the higher frequencies. Otoacoustic emissions appear to be more sensitive to cochlear insult than the conventional pure-tone audiometry. The aim of our study was to compare the efficacy of otoacoustic emissions (distortion-product otoacoustic emissions) with that of pure-tone audiometry as method of audiological monitoring ...
Introduction: Hearing loss is fairly a common disorder which is usually treated with corticosteroids via systemic administration and/or intra-tympanic injection. This study aimed to compare the effectiveness of intra-tympanic injections of dexamethasone with its combination with hyaluronic acid in patients with sudden sensorineural hearing loss. Materials and Methods: In this clinical trial, 40 patients were randomly assigned to two groups; in the first group, 20 patients received 2.4 mg intra-tympanic dexamethasone, while in the second group patients received injections of 2.4 mg of dexamethasone plus 2 mg of hyaluronic acid in combination. Patients in both groups were injected every other day to a total of three injections. The hearing status of patients was evaluated by pure tone audiometry (bone conduction threshold) before and 2 weeks after the intervention. Results: Assessment of hearing threshold before and after treatment in the two groups showed a significant difference between hearing
GUIDA, Heraldo Lorena; SOUSA, Ariane Laís de and CARDOSO, Ana Cláudia Vieira. Relationship between the findings of pure-tone audiometry and otoacoustic emission tests on military police personnel. Arquivos Int. Otorrinolaringol. [online]. 2012, vol.16, n.1, pp.67-73. ISSN 1809-4856. http://dx.doi.org/10.7162/S1809-48722012000100010.. INTRODUCTION: Otoacoustic emissions can be an alternative for cochlear evaluation in noise induced hearing loss (NIHL). OBJECTIVE: To investigate the correlation between the findings of audiometry results and distortion product otoacoustic emissions (DPOAE) in the military police. METHOD: from cross-sectional and retrospective study, 200 military police officers were submitted to audiological evaluation - pure tone audiometry and DPOAE. RESULTS: considering the provisions of Ordinance 19 of the Labour Department, the results were suggestive of induced hearing loss by high sound pressure levels in 58 individuals, distributed as follows: 28 (48.3%) bilateral cases ...
Audiologists regularly encounter the following scenario: A patient comes into the clinic with complaints of difficulty hearing speech in background noise. An adult patient is often accompanied by a family member, perhaps a spouse or an older child, who readily confirms his or her loved ones communication problems. Concerns about difficulties with speech perception in noise are often raised by parents of school-age children. The childs school teacher and maybe primary care physician share the concerns. Then, the patients pure tone audiometry reveals hearing thresholds within normal limits. Or, especially for the elderly, the audiogram documents a modest deficit in hearing thresholds that is not compatible with the patients complaints.. Based solely on the results of pure tone audiometry and probably a few simple speech recognition tests, the audiologist may confidently tell the patient and indicate in a formal report that "our testing shows that you have normal hearing." However, in most ...
According to The National Institute for Occupational Safety and Health (NIOSH), occupational hearing loss is one of the most common work-related illnesses in the United States. Approximately 22 million U.S. workers are exposed to hazardous noise levels at work, and an additional 9 million are exposed to chemicals that can damage hearing or balance functions of the ear. An estimated $242 million is spent annually in the U.S. on worker s compensation for hearing loss disability., , , , Occupati...
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A 35 year old man presents to the emergency department with an 18 hour history of a right sided sudden hearing loss. Examination does not reveal a cause. A diagnosis of idiopathic sensorineural deafness is made. Your consultant suggests that a course of prednisolone might be of benefit. You discuss this with the registrar in audiological medicine who does not support this approach. You wonder who is right ...
OBJECTIVE: There are only a few population-based epidemiological studies on audiogram configurations among adults. The aim of this study was to investigate the prevalence of different audiogram configurations among older adults. In addition, audiogram configurations among subjects reporting hearing problems were examined.. DESIGN: Cross-sectional, population-based, unscreened epidemiological study among older adults.. STUDY SAMPLE: The subjects (n = 850), aged 54-66 years, were randomly sampled from the population register. A questionnaire survey, an otological examination, and pure-tone audiometry were performed.. RESULTS: The most prevalent audiogram configuration among men was high-frequency steeply sloping (65.3% left ear, 51.2% right ear) and among women, high-frequency gently sloping (33.0% left ear, 31.5% right ear). There were significantly more flat configurations among women than among men. Unclassified audiograms were common especially among women (17.5%). Subjects reporting hearing ...
Pure-tone audiometry performed monthly on nine preschool cleft palate children showed the incidence of hearing loss ranging from 25 to 71 percent from month to month, with all children experiencing a significant hearing loss at some time. (Author/KW)
Audiometry or the hearing test helps to determine the ability of a person to hear various sounds and consequently identify the location of damage in a person with diminished hearing sensitivity.
The impacts of the Sask. Partys recent budgets are still hurting families throughout the province in many ways. For instance, many are now struggling with the consequences of the Sask. Party cut to the Hearing Aid Plan - a service that provided audiological evaluation, hearing aids and fittings, counselling and education.. "After years of blowing through record revenues, the Sask. Party panicked when the money ran out and started cutting in areas that would hurt the most vulnerable," said NDP Health Critic Vicki Mowat. "For over 40 years, this was a program that helped so many people and families throughout the province. It hasnt taken long to see the damage that cutting it has done.". Stephanie Schneck and her 9-year-old daughter Gracie are among the many who have borne the brunt of these Sask. Party cuts. Gracie needs $6,400 hearing aids, but her parents cant afford to pay for them and have been forced to hold fundraisers to provide her with the health services she needs. Stephanie is ...
An audiometry exam tests your ability to hear sounds. Sounds vary, based on their loudness (intensity) and the speed of sound wave vibrations (tone). Hearing occurs when sound waves stimulate the nerves of the inner ear. The sound then travels along nerve pathways to the brain. Sound waves can travel to the inner ear through the ear canal,...
This study is based on an analysis of 14 patients with VS treated with stereotactic radiosurgery or radiotherapy in a newly setup cancer center in 2014 using a LINAC-based radiotherapy machine. Patients selection was done by a team of clinical oncologists, neurosurgeons and radiologists during tumour board meetings. All patients underwent pure tone audiometry, MR imaging and CT simulation planning sessions where these images were fused and treatment planning were done. A customised immobilisation device was fabricated during the CT simulation planning session using a frameless stereotactic mask system. 57% (n = 8) had SRS (12 Gy in single fraction) and 43% had hypofractionated SRT (35Gy in 7 fractions) as primary treatment. During treatment verification, image guidance consisting of dual in-room kV x-ray, two infrared cameras and 6D robotic couch patients positioning were used. The patients were then seen in clinic at six weeks post treatment to assess early side effects following which 6 ...
We provide noise hazard health services, including audiometry and hearing tests to help manage noise risks in the workplace. Contact us today.
Though marketed as being wireless, there are obviously cables that work with this new audiometer from Otovation of King of Prussia, PA. The convenience com
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A total of 90 imaging studies were reviewed (ESD = 22; non-ESD = 30; control = 38). ESD and non-ESD groups had similar pure-tone averages (33.9 ± 20.6 versus 41.6 ± 22.6 dB HL; p = 0.21) and frequency of definite Menières disease (59.1% versus 53.3%; p = 0.68). There was no significant trend between groups for any measurement. One nonsignificant trend existed in mean vestibule length, increasing from the control (5.45 ± 0.54 mm), non-ESD (5.80 ± 0.97 mm), and ESD (5.94 ± 0.81 mm) group. In a combined Menières group, mean vestibule length was significantly greater than controls (5.86 ± 0.89 versus 5.45 ± 0.54 mm; p = 0.008) and mean vestibule width significantly less (2.99 ± 0.46 versus 3.19 ± 0.39 mm; p = 0.024 ...
Automatic analysis of the patients conscious responses to the emission of auditory stimuli during the performance of an audiometry ...
Interacoustics is the leading manufacturer of Audiometers, tympanometers, middle ear analyzers, ABR/ERA/OAE, balance investigation and hearing equipment
Interacoustics is the leading manufacturer of Audiometers, tympanometers, middle ear analyzers, ABR/ERA/OAE, balance investigation and hearing equipment
Instytut Biocybernetyki i Inżynierii Biomedycznej im. Macieja Nałęcza PAN istnieje od 1975 roku. Jest największym centrum inżynierii biomedycznej w Polsce.
OBJECTIVE: The immunosuppressive agent cyclosporin A (CsA) has contributed to the success of organ and bone marrow transplantation. CsA-related neurotoxicity is a well-known occurrence. Sensorineural hearing loss (SNHL) due to initiation of CsA treatment is an extremely rare finding. MATERIAL AND METHODS: A 32-year-old man who had undergone technically uneventful cadaveric renal transplantation for focal glomerulosclerosis when 25 years old was evaluated as the result of a 10-month history of bilateral hearing loss. The patient had been taking only CsA (150 mg twice daily) and methylprednisolone. RESULTS: Progressive bilateral SNHL was confirmed by an audiological examination. Eight months after dose reduction of CsA, pure-tone audiometry excluded progression of hearing loss. CONCLUSIONS: To the best of our knowledge, only rare cases of CsA-related hearing loss have been reported, and none after long-term CsA treatment. Audiological findings confirmed the cochlear origin of SNHL in our patient. ...
... (SSNHL) involves an acute unexplained hearing loss, nearly always unilateral, that occurs over less than a 72-hour period. Most cases are idiopathic, and the prognosis depends on the severity of the hearing loss.The
TY - JOUR. T1 - Relationships among drinking and smoking habits, history of diseases, body mass index and idiopathic sudden sensorineural hearing loss in Japanese patients. AU - Umesawa, Mitsumasa. AU - Kobashi, Gen. AU - Kitoh, Ryoshuke. AU - Nishio, Shin Ya. AU - Ogawa, Kaoru. AU - Hato, Naohito. AU - Sone, Michihiko. AU - Fukuda, Satoshi. AU - Hara, Akira. AU - Ikezono, Tetsuo. AU - Ishikawa, Kotaro. AU - Iwasaki, Satoshi. AU - Kaga, Kimitaka. AU - Kakehata, Seiji. AU - Matsubara, Atsushi. AU - Matsunaga, Tatsuo. AU - Murata, Takaaki. AU - Naito, Yasushi. AU - Nakagawa, Takashi. AU - Nishizaki, Kazunori. AU - Noguchi, Yoshihiro. AU - Sano, Hajime. AU - Sato, Hiroaki. AU - Suzuki, Mikio. AU - Shojaku, Hideo. AU - Takahashi, Haruo. AU - Takeda, Hidehiko. AU - Tono, Tetsuya. AU - Yamashita, Hiroshi. AU - Yamasoba, Tatsuya. AU - Usami, Shin Ichi. PY - 2017/3/10. Y1 - 2017/3/10. N2 - Objectives: To present the cardiovascular risk factors in idiopathic sudden sensorineural hearing loss (SSNHL) ...
The biological calibration was performed through the pediatric audiometer (Interacoustics) to determine the normal hearing threshold, according to each frequency, to be used as a parameter in this research. The measurement of noise levels was performed in non-treated environments in the ICB5 building in Monte Negro to delimitate the scales of environmental noise in which the evaluation might be performed during the visits. The Bruel & Kjaer 2236 Sound Level Meter Type II was used. The values of environmental noise level found ranged from 50 to 66 dB Sound Pressure Level (SPL).. The hearing threshold between 0 and 20 dB hearing level was obtained for frequencies of 1 kHz, 2 kHz and 4 kHz in a normal-hearing child and an adult (controls) in the mentioned environment. These control subjects had previously undergone a conventional audiological evaluation in an acoustic booth, so as to confirm the absence of any hearing alteration. The maximum intensity of 66 dBSPL was established as the standard ...
28) evaluated 29 patients with idiopathic sudden sensorineural hearing loss and 29 controls and showed that the two groups did not differ with regards to cIMT and other cardiovascular risk factors; however, flow-mediated dilation of the brachial artery predisposed individuals to develop idiopathic sudden sensorineural hearing loss (p=0.03, odds ratio: 1.4). There is evidence to suggest that hearing and vestibular function might be influenced by disease activity and autoimmune processes. RA patients may develop autoimmune inner-ear disease due to SNHI. There are some reports indicating that anti-tumor necrosis factor alpha agents (etanercept, adalimumab and infliximab) may offer additional treatment options for patients with autoimmune hearing loss.(20-22) Hearing impairment in RA is a subclinical comorbid state. Since most of the patients are not aware of their HI and have no clinical complaints, it is important that physicians consider hearing damage in these patients.(2,3,14) Despite of the ...
Objectives. Young people are often exposed to high music levels which make them more at risk to develop noise-induced symptoms such as hearing loss, hyperacusis and tinnitus of which the latter is the symptom perceived the most by young adults. Although subclinical neural damage was demonstrated in animal experiments, the human correlate remains under debate. Controversy exists on the underlying condition of young adults with normal hearing thresholds and noise-induced tinnitus due to leisure noise. The present study aimed to assess differences in audiological characteristics between noise-exposed adolescents with and without noise-induced tinnitus (NIT).Methods. A group of 87 young adults with a history of recreational noise exposure was investigated by use of the following tests: otoscopy, impedance measurements, pure-tone audiometry including high-frequencies, transient and distortion product otoacoustic emissions, speech-in-noise testing with continuous and modulated noise (amplitude-modulated by
Definitions of sudden hearing loss have been based on severity, time course, audiometric criteria, and frequency spectrum of the loss. Abrupt as well as rapidly progressive losses have been included under a single definition of sudden hearing loss.
A study using Taiwanese medical insurance records suggests sudden loss of hearing might be an early sign of vulnerability to stroke, researchers say. Hearing loss can foreshadow a cerebrovascular event by as much as two years, the study published in Stroke: Journal of the American Heart Association found. Lead investigator Herng-Ching Lin, a professor at Taipei Medical University School of Health Care Administration, says five-year follow-up data on 1,423 patients hospitalized for an acute episode of sudden sensorineural hearing loss showed they were more than 1 1/2 times more likely to suffer a stroke than a control group of 5,692 patients who had been hospitalized for an appendectomy. However, because insurance records may not have contained reliable information, such as correct diagnostic codes or other factors, the findings should be considered tentative, Lin says. To the best of our knowledge, no study has investigated the incidence or risk of cerebrovascular diseases developing following ...
CheckOrphan is a non-profit organization located in Basel, Switzerland and Santa Cruz, California that is dedicated to rare, orphan and neglected diseases. CheckOrphan offers users an interactive and dynamic platform for all these diseases. This strategy allows visitors to be updated daily on all the latest news and interact with people internationally. This is essential, because due to the nature of these diseases, there is not a large concentration of individuals within any given proximity ...
Background: Twenty-two million workers are exposed to hazardous noise in the United States. The purpose of this study is to estimate the prevalence of hearing loss among U.S. industries. Methods: We examined 2000-2008 audiograms for male and female workers ages 18-65, who had higher occupational noise exposures than the general population. Prevalence and adjusted prevalence ratios (PRs) for heari
1. Student is an 8 year-old resident of Attleboro, Massachusetts (SE-2). Students eligibility and entitlement to special education is not at issue. The primary area of disability identified by the APS Team is Sensory-Hearing (SE-2). 2. Student currently attends Hill-Roberts Elementary School, where he has just completed second grade (2008-2009 school year). 3. Student does not qualify for free or reduced lunch program (testimony of Parent). 4. Student was early identified with moderate receptive and expressive language delays (SE-11). Student has received speech and language services as part of his IEP since September 2005 (See SE-13). 5. Student first underwent audiological evaluation at Boston Childrens Hospital on February 21, 2008, after failing a school hearing screening in January of the same year. Boston Childrens Hospital found mild to moderate sensorineural hearing loss bilaterally. Student underwent a myringotomy in April, 2008 and pressure equalization tubes were placed in both his ...
new research is showing that osteoporosismay make you more likely to experience a surprising condition - sudden hearing loss. im rachellegrossman with your latest health news. patients with osteoporosis - may be more prone to suddendeafness â€" also known as sudden sensorineural hearing loss, or sshl â€" than people whodo not have osteoporosis. researchers say patients need to seek medical help immediatelyif they experience hearing loss. sshl is unexplained ...
Taking viagra can cause sudden hearing loos and effect your tinnitus. Read this article by Barry Keate and discover what he uncovered about viagra and tinnitus.
Audiometry involves the testing of hearing. There are various different ways to test hearing depending on the age of the person involved and the type of...
Health, ...DETROIT The first national treatment guideline for sudden hearing los...The guideline was developed by a 19-member panel led by Robert J. Stac... In most cases patients will have multiple visits with several physic... By focusing on opportunities for quality improvement the guideline s...,First,national,guideline,for,sudden,hearing,loss,published,medicine,medical news today,latest medical news,medical newsletters,current medical news,latest medicine news
Auditory dysfunction is related to large/small vessel occlusions and hemorrhage. Sudden sensorineural hearing loss (SSNHL) frequently occurs with anterior inferior cerebellar artery occlusion proximal to the internal auditory artery. Moreover, SSNHL has various pathogenetic mechanisms, the main proposed mechanisms being vascular disease, membrane ruptures, infection, and autoimmunity. Tumor necrosis factor (TNF) is an important cytokine in the inflammation process of cerebrovascular diseases. In the current study, the possible effects of polymorphisms in TNF- and TNF-β genes on SSNHL are evaluated. Two genetic polymorphisms in the TNF locus (TNF- -308 G - -,A and TNF-β +252 A - -,G) were investigated as risk factors for SSNHL by determining their prevalence in 97 SSNHL patients and in 587 controls. A significant increase was found for the TNF-β allele 1 in SSNHL patients compared with the controls ( 2 = 7.251, P = .007, odds ratio [OR] = 1.534, confidence interval [CI] = 1.12-2.10). These ...
In the past doctors hesitated to use a needle in the ear to treat sensorineural hearing loss because of concerns that injecting the steroid would result in a less hearing recovery for the patient, but recent tests show this is not the case.
To have access to full article that these tools were developed for, please subscribe. The cost to subscribe is only $20 USD per year and you will gain full access to all the premium content on www.healthplexus.net, an educational portal, that hosts 1000s of clinical reviews, case studies, educational visual aids and more as well as within the mobile app. ...
Free Online Library: Our Anesthetic Management for Brainstem Evoked a Response Audiometry in a Child with Ondines Curse.(Letter to the editor) by Cyprus Journal of Medical Sciences; Health, general Anesthesia Health aspects Gastroesophageal reflux Seizures (Medicine)
One study links osteoporosis to a risk of sudden sensorineural hearing loss. We explain what to look for, and what you can do to mitigate your risk.
Diagnosis Code 388.2 information, including descriptions, synonyms, code edits, ICD-10 conversion and references to the diseases index.
Current Queue , Current Queue for Medicine , Medicine archives Try the links in the MadSci Library for more information on Medicine. MadSci Home ...
Occupational hearing loss is one of the most common work-related illnesses in the United States, affecting nearly one-fourth of workers exposed to noise on the job.
[Comparative studies of the quality of the esophageal voice following laryngectomy: the insufflation test and reverse speech audiometry].: We carried out a tran
Highest Payout - Highest Conversion Rate - Highest Quality - Lowest Refund Rate. ... "Ive tried tons of other guides claiming to cure tinnitus, and none of them made ..... How to easily banish your tinnitus, no matter how severe it is, and even if the .... your products by instant download), youll also receive the following super .... Jaw-dropping No4090 Belovodskoe - Anime Online. Feb 26, 2014 ... Facts Banish Tinnitus! Super Converting Tinnitus Cure Product - Imgur Facts Drop Shipping Sucks - Dont Kill Your eBay? Business - Imgur .... Tinnitus Cure! PLEASE!! - Pinterest. Promo Banish Tinnitus! Super Converting Tinnitus Cure Product for sale #1 In case you are searching for info about Banish Tinnitus! Super Converting Tinnitus .... ...
A large number of acoustic therapies (sound therapy) are used to treat tinnitus (a condition where a person hears sounds that come from inside the body). At present, the only way to evaluate acoustic therapies is by means of subjective methods such as analog visual scale and questionnaires. This study, consequently, seeks to establish an objective methodology to treat tinnitus with acoustic therapies based on electroencephalographic (EEG) activity recordings (the recordings of the electrical activity in the brain). The aim of this study is to examine how acoustic therapies can improve the quality of life and is there is way to correlate the objective and subjective data from patients EEGs and questionnaires ...
Applicants shall be required to take and pass a decibel audio test using an audiometer with an average loss not to exceed 25 or more decibels at the 500, 1000, 2000, and 3000 Hertz (Hz) levels in either ear with no single frequency loss in excess of 40 The applicant may not use a hearing aid or other aid to perform the test ...
Your one stop medical center. Medcentral is a mall based clinic that provides out-patient medical and laboratory services. Medcentral Philippines has a staff of doctors and by health workers that deliver services in clinical laboratory, drug testing, radiology/computerized X-ray, mobile X-ray, ultrasonography, 2-D Echo, stress test, CT scan, audiometry, electrocardiogram, physical therapy, pulmonary function test, […]. ...
Now is the time to leverage your extensive tinnitus knowledge! Partner with Signia to host a Tinnitus Community Seminar and target those suffering from tinnitus in your community. A Signia Training Specialist can come to your location to educate your customers and help to further explain the benefits of tinnitus therapy solutions.. See how successful this event can be! Hear from a fellow hearing care professional who partnered with Signia to host an event in her area and put her tinnitus training to use! Discover how the audience reacted to the content and how interest lead to appointments.. ...
Finding a cure for tinnitus? I wrote a post a while back titled: Answers to Hyperacusis and Habituation, and in it mentioned two of the most common...
just found this board Im 56 and have had tinnitus since December of 07. At first it was only the tinnitus then in time I had pressure in my left ear....
WARNING: Does Charlie Gaines Tinnitus 911 Ingredients really good for health? Tinnitus 911 Supplement be useful? Read my honest Tinnitus 911 Review and before
The goal of tinnitus miracle evaluations is to critique as well as expose you to information that can help you get the reduced your tinnitus signs or symptoms and save you effort and time in finding the best treat for tinnitus ...
Our today topic is how to stop tinnitus instantly?We will share the best answer for how to stop tinnitus instantly?Many people complain
While each case of tinnitus is unique, there are some tips and habits that people can do to avoid worsening their tinnitus. In fact, there are even environmental factors that can end up impacting your tinnitus. Being aware of all… Read More. ...
Tinnitus E-Programme are offering supporters of the BTA an exclusive 15% discount for their online CBT for Tinnitus courses. The BTA will also receive a donation from this offer.
Substancja czynna leku wyłącza aktywność pasożytów, szczególnie tych wywołujących malarię. Dlatego lek stosowany jest z powodzeniem w reumatoidalnym
Everything you need to know about what tinnitus is, as well as its causes, symptoms, and treatments. Plus, heres the latest on new research that aims to cure tinnitus. If you want relief for that
Many people suffer from Tinnitus and there are things you can do to mitigate the risk of getting it. Find out the common causes which lead to tinnitus.
Do You Need Help For Your Tinnitus? Tinnitus, a symptom rather than a disease, affects around 20% of the American population. Typically caused due to some underlying condition, it is quite bothersome and causes you to to hear a ringing, … Continue reading →. ...
Lipoflavonoids and Tinnitus - How Do Lipoflavonoids Help in Tinnitus? Lipoflavonoid is a nutrient formula available over-the-counter. The product is
We constantly research the tinnitus therapies out there and keep up-to-date on the latest developments in the scientific community. Heres an interesting treating, using a similar, audio-based approach to treating tinnitus. However, it is about 500 times more expensive than our own version - well leave it up to you which one you opt for …. Read More. ...
We all have that day. The day the Tinnitus started. Sharing my story but also what has helped me over the last ten years. Hopefully it helps you as well :)
There is no doubt that my T feels a lot worse when my mood is low. When I am happy and bouncing around it goes into the background. When you are low it is like it is waiting there to feed off your...
We are people with tinnitus working for the tinnitus patient community. We focus on patient support and education, promoting research, and raising awareness.. We are seriously driven: we have already spent years working for the tinnitus community, using our own time and our own money. More About Us ...
At BMI Healthcare we offer Tinnitus Counselling across our hospitals.Enquire online today to find out more about our services and facilities and en
احمد تو عاشقی بمشیخیت ترا چہ کار. دیوانہ باش سلسلہ شد شد نشد نشد. (مجمع بڑھانے کی کوشش) فضول تو اسی درجہ میں ہے جب کہ. اس سےضروریات و معمولات میں خلل نہ ہو،. اگر اس کی بھی نوبت آنے لگے تو پھر سدراہ ہے۔. لوگ کہتے ہیں کہ ہماری نیت تو مخلوق کی ہدایت ہے،. سو یاد رکھو کہ. اصل مقصود اپنا وصول الی اللہ ہے، دوسروں کا ایصال بھی اسی لئے مطلوب ہے کہ. اس کے ذریعہ سے ہم کو بھی وصول تام ہو جاۓ، حق تعالی راضی ہوجائیں۔. ورنہ ایصال خلق خود بالذات مطلوب نہیں، خصوص جبکہ مخل وصول ہونے لگے۔. پس اصلی کوشش اپنے وصول کے لئے کرنا۔. البتہ بدون کاوش اور گھیر گھار کے کوئی طالب آجاۓ اور اس. کی ...
Purpose: The aim of this study was to evaluate the efficacy of salvage hyperbaric oxygen therapy (HBOT) for sudden sensorineural hearing loss (SSNHL); HBOT is performed after three weeks of the onset of the disease. Methods: This retrospective clinical study included patients with unilateral idiopathic SSNHL. All patients admitted to the hospital with the diagnosis of SSNHL were given standard steroid treatment within the 14 days of the onset of the SSNHL. We compared the two study groups - Group A: patients receiving steroid treatment within the first 14 days; Group B: patients receiving corticosteroid treatment within the first 14 days, but unresponsive to this treatment, and began to receive HBOT after three weeks of the onset of SSNHL for the purpose of salvage therapy. Results: A total of 50 patients were included in the study. The mean age of the patients was 50.6 ± 14.1 years. There was not a significant difference in the degree of hearing loss between the groups based on the findings from
The standard of care treatment of sudden hearing loss uses a type of steroid called glucocorticoid. Examples of glucocorticoids are prednisone, methylprednisolone and dexamethasone. Not everybody recovers hearing with glucocorticoid treatment. Fludrocortisone is a different type of steroid called mineralocorticoid. Unlike glucocorticoids, which work by reducing inflammation, mineralocorticoids work by changing salt and fluid balance. In animal studies, fludrocortisone is at least as effective as glucocorticoid in preserving hearing. Fludrocortisone is not approved for the treatment of sudden hearing loss. The purpose of this study is to test whether fludrocortisone can treat sudden hearing loss ...
Initial symptoms were reported and informally scored for impingement on a 10-point scale by the patient. The symptoms started with are a minor sore throat (2/10) and moderate aural fullness (6/10) in the right ear upon awakening in the morning. Within two days, a mild to severe, dramatically sloping, ultra-high frequency hearing loss with tinnitus in the right ear was recorded (Fig. 1), which was accompanied by the onset of loud tinnitus 24/7 with sound sensitivity (8/10). The tinnitus was initially measured at 55 dB at 9,000 Hz in the right ear, and at 20 dB at 8,000 Hz in the left ear (Note: The patient only complains of tinnitus and sound sensitivity in the right ear; tests of the left ear are used to compare the two ears).. At two weeks, tinnitus at 8,000 Hz is measured at 60 dB in the right ear and balanced to 55 dB in the left. The ULL measurements between 250 Hz and 16,000 Hz confirmed the presence of hyperacusis. Evidence of asymmetry showed the right ear is more sensitive (by 10-15 dB) ...
China 2016 Hot Sale Hearing Aid Professional Physician′s Office Clinics Hearing Loss Test Portable Digital Audiometer Supplier, Find details about China Hearing Aid Portable Audiometer, Hearing Aid from 2016 Hot Sale Hearing Aid Professional Physician′s Office Clinics Hearing Loss Test Portable Digital Audiometer Supplier - Saferlife Products Co., Ltd.
Sudden hearing loss secondary to an acute cochlear hemorrhage is rare. Estimates of annual incidence of sudden hearing loss are 5-20 per 100,000 of which only a small percentage is due to intralabyrinthine hemorrhage. Only 1-4% of all cases of sudden sensorineural hearing loss are bilateral. The fact that this patient has Down syndrome is significant, since hearing loss has been reported in both acute and chronic myeloid leukemias, which occurs at a higher frequency in Down patients. One theory proposes that hyperleukocytosis causes leukostasis with abnormal microvascular perfusion. The cochlea is an end organ in terms of its blood supply with no collaterals. It is supplied by the labyrinthine artery, a branch of AICA. Its tortuous course predisposes it to the effects of hyperviscocity. In addition, it is extremely sensitive to changes in blood supply. Thus, the time course of hearing loss correlates well with a vascular event such that an acute hearing loss is most likely caused by hemorrhage, ...
Most people think of hearing loss as a congenital condition or something that happens slowly over time as we age. However, a startling number of people actually fall victim to a severe hearing loss out of the blue and without warning. This condition is called sudden hearing loss (SLH), and it can be mysterious and…
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Presbycusis (also spelled presbyacusis, from Greek presbys "old" + akousis "hearing"), or age-related hearing loss, is the cumulative effect of aging on hearing. It is a progressive and irreversible bilateral symmetrical age-related sensorineural hearing loss resulting from degeneration of the cochlea or associated structures of the inner ear or auditory nerves. The hearing loss is most marked at higher frequencies. Hearing loss that accumulates with age but is caused by factors other than normal aging (nosocusis and sociocusis) is not presbycusis, although differentiating the individual effects of distinct causes of hearing loss can be difficult. The cause of presbycusis is a combination of genetics, cumulative environmental exposures and pathophysiological changes related to aging. At present there are no preventative measures known; treatment is by hearing aid or surgical implant. Presbycusis is the most common cause of hearing loss, afflicting one out of three persons by age 65, and one out ...
Human hearing loss (HL) and comorbidities like tinnitus pose serious problems for peoples daily life which in most severe cases may lead to social isolation, depression and suicide. Here we investigate the relationship between hearing deficits and tinnitus. To this end we conducted a retrospective study on anonymized pure tone and speech audiometric data from patients of the ENT hospital Erlangen in which we compare audiometric data between patients with and without tinnitus. Overall data from 37661 patients with sensorineural (SHL) or conductive hearing loss (CHL) with (T, 9.5%) or without (NT, 90.5%) a tinnitus percept in different age groups and with different tinnitus pitches were included in this study.The results of the pure tone audiometry comparisons showed significant differences in T patients compared to NT patients. In young patients, we generally found lower hearing thresholds in T compared to NT patients. In adult patients, differences were more heterogeneous: hearing thresholds in T
Do I have to record the hearing loss if I am going to retest the employees hearing? No, if you retest the employees hearing within 30 days of the first test, and the retest does not confirm the recordable STS, you are not required to record the hearing loss case on the OSHA 300 Log. If the retest confirms the recordable STS, you must record the hearing loss illness within seven (7) calendar days of the retest. If subsequent audiometric testing performed under the testing requirements of the §1910.95 noise standard indicates that an STS is not persistent, you may erase or line-out the recorded entry.. ...
Oral corticosteroids are routinely used for primary treatment of sudden sensorineural hearing loss, once primary causes are ruled out, although data are limited to support their use; there are also limited data to support the use of intratympanic corticosteroids for primary therapy or for treatment of those whose hearing did not improve with initial therapy. A clinical trail sponsored by the National Institutes of Health that compares oral with intratympanic corticosteroid treatment for primary therapy is under way ...
OBJECTIVE This study was conducted to discuss the etiologic factors, clinical-radiologic findings, and surgical outcomes in patients with traumatic ossicular pathology. MATERIAL AND METHODS Thirty-two patients with conductive hearing loss due to trauma were retrospectively analyzed. Their mean age was 24.56 +/- 7 years. The average delay from injury until treatment was 5.7 years. Air and bone conduction hearing thresholds were measured by pure tone audiometry on initial admission, at 1 month postoperatively and during follow-up at 6-month intervals. Mean follow-up time is 3.2 years. The hearing threshold was calculated as the mean value of the threshold for 500, 1000, 2000, and 3000 Hertz. All patients were evaluated by high-resolution computerized tomography of the temporal bone at axial and coronal sections before the surgery. RESULTS Traffic accident was the common cause of injury. Seven patients had temporal bone fracture. Six patients had facial paralysis ranging between House-Brackmann grades
Dallan and colleagues (2010) noted that the natural history of sudden sensorineural hearing loss (SSNHL) is currently unknown. That is, it is unclear how often spontaneous recovery occurs, but spontaneous recovery may occur in 30 to 60 percent of SSNHL cases…and when spontaneous recovery occurs; it usually occurs within the first week or two of onset. They stated no pharmacologic treatments had been shown to be effective using "evidence criteria" and "the lack of actual evidence for this method calls for serious evaluation through a randomized study. However, until conclusive data are reached, it can be considered a valuable solution in patients in whom traditional therapy has failed.". Alexander et al (2015) compared outcomes in 37 patients with SSNHL using 10 versus 24 mg/mL of intratympanic (IT) dexamethasone. They report that "irrespective of the delivery method, literature on the efficacy of steroids in general for the treatment of idiopathic SSNHL is conflicting…." Further, they state ...
Many consumers are unsure where to find professional help with their hearing. Our highly trained staff provides hearing health care in a manner that provides you with the information that you need for a successful hearing aid experience.. Most adults with hearing loss can be helped with hearing aids. Choosing the right hearing aid can be difficult. There is an enormous amount of information regarding hearing aids and the choices can be daunting. Choosing a Hearing Professional who can guide you through this process is the first critical decision in purchasing hearing aids.. Of course, the first step to a successful hearing aid experience is an accurate audiological evaluation or hearing test. Equally important is a determination regarding your specific needs and lifestyle. It is critical to convey this information to the hearing health care professional. Finally, everyone has a budget. Your budgetary constraints should be discussed. Hearing aids are rarely covered by ...
Is cochlear implantation a good treatment method for profoundly deafened elderly? Magdalena Lachowska, Agnieszka Pastuszka, Paulina Glinka, Kazimierz Niemczyk Department of Otolaryngology, Hearing Implant Center, Medical University of Warsaw, Warsaw, Poland Purpose: To assess the benefits of cochlear implantation in the elderly. Patients and methods: A retrospective analysis of 31 postlingually deafened elderly (≥60 years of age) with unilateral cochlear implants was conducted. Audiological testing included preoperative and postoperative pure-tone audiometry and a monosyllabic word recognition test presented from recorded material in free field. Speech perception tests included Ling's six sound test (sound detection, discrimination, and identification), syllable discrimination, and monosyllabic and multisyllabic word recognition (open set) without lip-reading. Everyday life benefits from cochlear implantation were also evaluated. Results: The mean age at the time of cochlear implantation was 72
Sensorineural hearing loss is the most common type of hearing loss. More than 90 percent of all hearing aid wearers have sensorineural hearing loss. The most common causes of sensorineural hearing loss are age related changes and noise exposure. A sensorineural hearing loss may also result from disturbance of inner ear circulation, increased inner fluid pressure or from disturbances of nerve transmission. Sensorineural hearing loss is also called "cochlear loss," an "inner ear loss" and is also commonly called "nerve loss." Years ago, many professionals said there was nothing that could be done for sensorineural hearing loss that is totally incorrect today. There are many excellent options for the patient with sensorineural hearing loss ...
OBJECTIVES: To review the clinical features of benign paroxysmal positional vertigo (BPPV) secondary to sudden sensorineural hearing loss (SNHL) and to analyze the correlation between canal paresis and the effectiveness of canalith repositioning procedures (CRPs) for the treatment.. DESIGN: Study case series with chart review.. SETTING: Academic university hospital.. PATIENTS: We retrospectively reviewed 277 patients with BPPV. For sudden SNHL with a recent vertigo, patients underwent electronystagmography and bithermal caloric tests. We investigated the clinical characteristics including causes, type of involved semicircular canal, frequency of CRPs, treatment results, and canal paresis (CP).. INTERVENTIONS: The diagnosis of BPPV accompanied by same-sided sudden SNHL was based on the results of head roll and Dix-Hallpike tests.. RESULTS: Of 277 patients with BPPV, 24 (8.7%) had sudden SNHL. Multiple-canal involvement most commonly developed in post-sudden SNHL BPPV (p , 0.01). Patients with ...

Therapeutic effect of Intra-Tympanic Dexamethasone-Hyaluronic Acid Combination in Sudden Sensorineural Hearing LossTherapeutic effect of Intra-Tympanic Dexamethasone-Hyaluronic Acid Combination in Sudden Sensorineural Hearing Loss

The hearing status of patients was evaluated by pure tone audiometry (bone conduction threshold) before and 2 weeks after the ... The hearing status of patients was evaluated by pure tone audiometry (bone conduction threshold) before and 2 weeks after the ...
more infohttp://ijorl.mums.ac.ir/article_9219.html

Sensorineural Hearing Impairment and Subclinical Atherosclerosis in Rheumatoid Arthritis Patients Without Traditional...Sensorineural Hearing Impairment and Subclinical Atherosclerosis in Rheumatoid Arthritis Patients Without Traditional...

Pure tone air (250-8000 Hz) and bone conduction (250-6000 Hz) thresholds were obtained, tympanograms and impedance audiometry ... Pure tone air (250-8000 Hz) and bone conduction (250-6000 Hz) thresholds were obtained using the audiometer AA-97B (Rion Co. ... Impedance audiometry was measured using an IA-AZ-7 model tympanometer (Middelfart, Denmark) calibrated to International ...
more infohttps://www.archivesofrheumatology.org/full-text/787

COMPARING THE ENDOSCOPIC TECHNIQUE WITH THE MICROSCOPIC BUTTERFLY CARTILAGE TYMPANOPLASTY - KBB-Forum: Elektronik Kulak Burun...COMPARING THE ENDOSCOPIC TECHNIQUE WITH THE MICROSCOPIC BUTTERFLY CARTILAGE TYMPANOPLASTY - KBB-Forum: Elektronik Kulak Burun...

Air conduction pure tone audiometry (PTA), air-bone gap reduction, air-bone gap (ABG) and hearing gain before and after surgery ...
more infohttp://kbb-forum.net/journal/abstract.php?lang=en&id=493

Guidelines for Manual Pure-Tone Threshold AudiometryGuidelines for Manual Pure-Tone Threshold Audiometry

These guidelines were developed by the Working Group on Manual Pure-Tone Threshold Audiometry, under the office of the Vice ... Guidelines for Manual Pure-Tone Threshold Audiometry. Working Group on Manual Pure-Tone Threshold Audiometry. About this ... Pure-tone threshold audiometry is the measurement of an individuals hearing sensitivity for calibrated pure tones. Three ... The guidelines presented in this document are limited to manual pure-tone audiometry. Sound field audiometry using loudspeakers ...
more infohttps://www.asha.org/policy/gl2005-00014.htm

Pure tone audiometry - WikipediaPure tone audiometry - Wikipedia

In addition, response to pure tone stimuli may be limited, because in a sound field pure tones create standing waves, which ... Pure tone audiometry (PTA) is the key hearing test used to identify hearing threshold levels of an individual, enabling ... Recommended Procedure: Pure Tone air and bone conduction threshold audiometry with and without masking and determination of ... such as behavioral observation audiometry, visual reinforcement audiometry and play audiometry. Conventional audiometry tests ...
more infohttps://en.wikipedia.org/wiki/Pure_tone_audiometry

JMIR-Self-Test Web-Based Pure-Tone Audiometry: Validity Evaluation and Measurement Error Analysis | Masalski | Journal of...JMIR-Self-Test Web-Based Pure-Tone Audiometry: Validity Evaluation and Measurement Error Analysis | Masalski | Journal of...

Moreover, Web-based pure-tone audiometry may be used for self-monitoring of hearing, especially if tests are to be conducted ... Web-based pure-tone audiometry can be used without previous training in its conducting. However, it requires the knowledge of ... Pure-tone air-conduction and bone-conduction threshold audiometry with and without masking. 2011. Recommended Procedure URL: ... The potential application of pure-tone audiometry conducted on a PC depends on the value of the measurement error. The PC-based ...
more infohttp://www.jmir.org/2013/4/e71/

Audiology | medicine | Britannica.comAudiology | medicine | Britannica.com

Pure-tone audiometry. The most widely used assessment procedure in clinical audiology is known as pure-tone audiometry. The ... there is a level above which the pure tone is always heard and a lower level where the tone is never heard. The threshold of ... In air-conduction testing, a pure tone is presented via an earphone (or a loudspeaker). The signal travels through the air in ... During the procedure, a pure tone is produced, and air pressure is changed inside the ear with a handheld instrument. The ...
more infohttps://www.britannica.com/science/audiology

Hearing tests - Canadian Cancer SocietyHearing tests - Canadian Cancer Society

Pure tone audiometry. Pure tone audiometry checks how well you can hear sounds at different volumes and pitches. During this ... Play audiometry. Play audiometry needs your childs cooperation, so it is used with children who are 3 to 5 years of age. ... Behavioural audiometry. Behavioural audiometry watches how a baby behaves in response to certain sounds. It is usually used ... Visual reinforcement audiometry (VRA). VRA is used most often for children between 6 months and 3 years old. Your child is ...
more infohttp://www.cancer.ca/en/cancer-information/diagnosis-and-treatment/tests-and-procedures/hearing-tests/?region=nl

Hearing exam - Canadian Cancer SocietyHearing exam - Canadian Cancer Society

Pure tone audiometry* The audiologist presents sounds at different volumes and pitches into the persons ears. ... Visual reinforcement audiometry (VRA). This test is used most often for children between 6 months and 3 years of age.* The ... Play audiometry. This test requires the childs cooperation, so it is used with children 3-5 years of age.* Sounds at different ... Behavioural audiometry. This test observes the behaviour of the infant in response to certain sounds. It must be used with ABR ...
more infohttp://www.cancer.ca/en/cancer-information/diagnosis-and-treatment/tests-and-procedures/hearing-exam/?region=ns

Implantable Bone Conduction Hearing Devices*Implantable Bone Conduction Hearing Devices*

Pure Tone Audiometry (PTA). (PTA) is the key hearing measurement used to identify hearing threshold levels of an individual, ... The pure-tone average air-conduction threshold of the normal ear should be no greater than 20 dB measured at 0.5, 1, 2, and 3 ... A pure-tone average (PTA) bone-conduction threshold measured at 0.5, 1, 2, and 3 kHz is mild to moderate (35-65 dB HL) ... A convenient summary of the audiogram for each ear is the pure-tone average (PTA) of thresholds measured at specific ...
more infohttps://www.wellmark.com/Provider/MedpoliciesAndAuthorizations/MedicalPolicies/policies/implantable_bone_conduction_hearingaid.aspx

Hearing Test - Pure tone Audiometry | ENT Specialist Dr Meenesh Juvekar | Ear Nose Throat DoctorHearing Test - Pure tone Audiometry | ENT Specialist Dr Meenesh Juvekar | Ear Nose Throat Doctor

What is pure tone audiometry?. Pure tone audiometry is a test is to get a qualitative and quantitative analysis of the patients ... How is pure tone audiometry done?. Pure tone audiometry is carried out in a sound proof room. Air conduction thresholds for ... What are the aims of pure tone audiometry?. * Analysis of the patients hearing loss (conductive hearing loss, sensorineural ... Procedures Surgeries - Pure Tone Audiometry. ... Hearing Test - Pure Tone Audiometry. *Laryngeal Scopy - ...
more infohttp://specialist-ent.com/procedures-surgeries/pure-tone-audiometry.aspx

Ototoxicity and hearing lossOtotoxicity and hearing loss

Pure tone audiometry. Cisplatin hearing loss begins in the high tone 8 kHz range and progresses down the frequencies into the ... High frequency audiometry. Extended high frequency audiometry is not readily available but testing the 9-20 kHz range could ...
more infohttps://www.starship.org.nz/for-health-professionals/national-guidelines-paediatric-oncology-and-haematology/o/ototoxicity-and-hearing-loss/

Manual of Pediatric Balance DisordersManual of Pediatric Balance Disorders

Pure-Tone Audiometry and Masking Maureen Valente. 255 pages, Color Illustrations (4 Color), Softcover, 5 x 7.5" ...
more infohttps://www.pluralpublishing.com/publication_mpbd.htm

A Practical Guide to Quality Interaction with Children Who Have a Hearing LossA Practical Guide to Quality Interaction with Children Who Have a Hearing Loss

Pure-Tone Audiometry and Masking Maureen Valente. 255 pages, Color Illustrations (4 Color), Softcover, 5 x 7.5" ...
more infohttp://pluralpublishing.com/publication_apgtqi.htm

Hearing LossHearing Loss

Pure-Tone Audiometry and Masking Maureen Valente. 255 pages, Color Illustrations (4 Color), Softcover, 5 x 7.5" ... Review of Audiometry. Special Testing and Hearing Aid Fitting. Hearing Aid Types. Hearing Aid Amplification in the Pediatric ...
more infohttp://pluralpublishing.com/publication_hl.htm

Frontiers | Analysis of Audiometric Differences of Patients with and without Tinnitus in a Large Clinical Database | NeurologyFrontiers | Analysis of Audiometric Differences of Patients with and without Tinnitus in a Large Clinical Database | Neurology

The results of the pure tone audiometry comparisons showed significant differences in T patients compared to NT patients. In ... in different age groups and with different tinnitus pitches were included in this study.The results of the pure tone audiometry ... In speech audiometry only CHL patients with high pitched tinnitus showed lower thresholds compared to NT patients thresholds. ... In speech audiometry only CHL patients with high pitched tinnitus showed lower thresholds compared to NT patients thresholds. ...
more infohttps://www.frontiersin.org/articles/10.3389/fneur.2017.00031/full

CISDOC - The effects of toluene plus noise on hearing thresholds: An evaluation based on repeated measurements in the German...CISDOC - The effects of toluene plus noise on hearing thresholds: An evaluation based on repeated measurements in the German...

Auditory thresholds were measured with pure tone audiometry. Noise intensity was significant for auditory thresholds. However, ... literature survey; exposure evaluation; pure-tone audiometry; long-term study; hearing threshold. ...
more infohttp://www.ilo.org/dyn/cisdoc2/cismain.details?p_lang=en&p_doc_id=110308

Hearing Tests - Lawrence Memorial HospitalHearing Tests - Lawrence Memorial Hospital

Pure tone audiometry. Pure tone audiometry uses a machine called an audiometer to play a series of tones through headphones. ... You signal by raising your hand or pressing a button every time you hear a tone, even if the tone you hear is very faint. The ... You can hear tones at equal loudness in both ears.. *You are able to repeat 90% to 95% of the words in a word recognition test. ... Again, you will signal each time you hear a tone.. Tuning fork tests. A tuning fork is a metal, two-pronged device that makes a ...
more infohttps://www.lmh.org/wellness/health-library/document-viewer/?id=tv8475

Hearing TestsHearing Tests

Pure tone audiometry. Pure tone audiometry uses a machine called an audiometer to play a series of tones through headphones. ... You signal by raising your hand or pressing a button every time you hear a tone, even if the tone you hear is very faint. The ... You can hear tones at equal loudness in both ears.. *You are able to repeat 90% to 95% of the words in a word recognition test. ... Again, you will signal each time you hear a tone.. Tuning fork tests. A tuning fork is a metal, two-pronged device that makes a ...
more infohttps://www.pardeehospital.org/patients-visitors/health-library/document-viewer/?id=tv8475

Otosclerosis and your hearing ability: how to treat it? | hear.comOtosclerosis and your hearing ability: how to treat it? | hear.com

Pure-tone audiometry. During this hearing test, patients are subjected to high and low tones, each at different volumes. The ... If pure-tone audiometry is now conducted on an otosclerosis patient, the auditory threshold curve for air conduction reduces ... In otosclerosis patients, the auditory threshold curve displays a Carharts notch, which appears at tone frequencies of 1500 Hz ... with every tone frequency. This is due to the hardened ossicles and associated hearing impairment or conductive hearing loss. ...
more infohttps://www.hear.com/useful-knowledge/otosclerosis/

CPT® 2011 The Latest in ENT Procedures - AAPC Knowledge CenterCPT® 2011 The Latest in ENT Procedures - AAPC Knowledge Center

0208T Pure tone audiometry (threshold), automated; air only. 0209T Pure tone audiometry (threshold), automated; air and bone ... 0211T Speech audiometry threshold, automated; with speech recognition. 0212T Comprehensive audiometry threshold evaluation and ... Turn to Category III Codes for Automated Audiometry. CPT® 2011 adds five Category III codes to describe automated audiometry ...
more infohttps://www.aapc.com/blog/22958-cpt-2011-the-latest-in-ent-procedures/

IJERPH | Free Full-Text | The Adverse Effects of Heavy Metals with and without Noise Exposure on the Human Peripheral and...IJERPH | Free Full-Text | The Adverse Effects of Heavy Metals with and without Noise Exposure on the Human Peripheral and...

... pure-tone audiometry auditory brainstem response; hearing loss; heavy metals; humans; noise; pure-tone audiometry ...
more infohttp://www.mdpi.com/1660-4601/13/12/1223

Study to Evaluate SPI-1005 in Adults With Meniere's Disease - Full Text View - ClinicalTrials.govStudy to Evaluate SPI-1005 in Adults With Meniere's Disease - Full Text View - ClinicalTrials.gov

Pure Tone Audiometry. *Impact on Speech Discrimination [ Time Frame: 7 weeks ]. Words in Noise Test ...
more infohttps://www.clinicaltrials.gov/ct2/show/NCT02603081
  • In current practice, the A- weighting curve filter is used to weight sound pressure levels as a function of frequency, approximately in accordance with the frequency response characteristics of the human auditory system for pure tones. (europa.eu)
  • It is recorded from a higher auditory level than electrocochleography (ECochG) or brainstem electric response audiometry (BERA) and, therefore, is less subject to organic neurologic disorders. (medscape.com)
  • The inclusion criteria were as follows: the exposure to noise was measured in sound pressure levels (SPLs) and expressed in individual equivalent decibel values (L EX,8h ), the studies included both exposed and reference groups, the outcome was a permanent health effect, i.e., permanent hearing loss assessed with pure-tone audiometry and/or permanent tinnitus assessed with a questionnaire. (mdpi.com)
  • Symptoms of HL vary and may include tinnitus (ringing tone sensation) and muffled or distorted sounds . (who.int)
  • Exposure to excess noise is first observed as an increase in the threshold of hearing (threshold shift), as assessed by audiometry [ 3 ]. (hindawi.com)
  • Linearized DPOAE I/O functions presumably reflect linearized BM growth functions under conditions of MOC efferent activation, and this process may have extended the neural response to the signal tone so that it could be more easily heard in the presence of masking noise under certain conditions examined in this study. (scirp.org)
  • Noise-induced hearing loss is usually diagnosed with a combination of history of exposure to noise levels and the results of a pure-tone audiometry . (medindia.net)
  • and an attenuator, which controls and specifies the intensity of tones produced. (medscape.com)
  • Pure-tone audiometry was performed both preoperatively and postoperatively on 67 patients who underwent microvascular decompression for hemifacial spasm during the study period. (thejns.org)