The sensory areas on the vertical wall of the saccule and in the floor of the utricle. The hair cells in the maculae are innervated by fibers of the VESTIBULAR NERVE.
An oval area in the retina, 3 to 5 mm in diameter, usually located temporal to the posterior pole of the eye and slightly below the level of the optic disk. It is characterized by the presence of a yellow pigment diffusely permeating the inner layers, contains the fovea centralis in its center, and provides the best phototropic visual acuity. It is devoid of retinal blood vessels, except in its periphery, and receives nourishment from the choriocapillaris of the choroid. (From Cline et al., Dictionary of Visual Science, 4th ed)
Collections of illustrative plates, charts, etc., usually with explanatory captions.
The essential part of the hearing organ consists of two labyrinthine compartments: the bony labyrinthine and the membranous labyrinth. The bony labyrinth is a complex of three interconnecting cavities or spaces (COCHLEA; VESTIBULAR LABYRINTH; and SEMICIRCULAR CANALS) in the TEMPORAL BONE. Within the bony labyrinth lies the membranous labyrinth which is a complex of sacs and tubules (COCHLEAR DUCT; SACCULE AND UTRICLE; and SEMICIRCULAR DUCTS) forming a continuous space enclosed by EPITHELIUM and connective tissue. These spaces are filled with LABYRINTHINE FLUIDS of various compositions.
A replica technique in which cells are frozen to a very low temperature and cracked with a knife blade to expose the interior surfaces of the cells or cell membranes. The cracked cell surfaces are then freeze-dried to expose their constituents. The surfaces are now ready for shadowing to be viewed using an electron microscope. This method differs from freeze-fracturing in that no cryoprotectant is used and, thus, allows for the sublimation of water during the freeze-drying process to etch the surfaces.
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.
Cells forming a framework supporting the sensory AUDITORY HAIR CELLS in the organ of Corti. Lateral to the medial inner hair cells, there are inner pillar cells, outer pillar cells, Deiters cells, Hensens cells, Claudius cells, Boettchers cells, and others.
Auditory sensory cells of organ of Corti, usually placed in one row medially to the core of spongy bone (the modiolus). Inner hair cells are in fewer numbers than the OUTER AUDITORY HAIR CELLS, and their STEREOCILIA are approximately twice as thick as those of the outer hair cells.
Two membranous sacs within the vestibular labyrinth of the INNER EAR. The saccule communicates with COCHLEAR DUCT through the ductus reuniens, and communicates with utricle through the utriculosaccular duct from which the ENDOLYMPHATIC DUCT arises. The utricle and saccule have sensory areas (acoustic maculae) which are innervated by the VESTIBULAR NERVE.
The part of the membranous labyrinth that traverses the bony vestibular aqueduct and emerges through the bone of posterior cranial fossa (CRANIAL FOSSA, POSTERIOR) where it expands into a blind pouch called the endolymphatic sac.
A spiral tube that is firmly suspended in the bony shell-shaped part of the cochlea. This ENDOLYMPH-filled cochlear duct begins at the vestibule and makes 2.5 turns around a core of spongy bone (the modiolus) thus dividing the PERILYMPH-filled spiral canal into two channels, the SCALA VESTIBULI and the SCALA TYMPANI.
Small, nonspecific nerve cells scattered in the periventricular GRAY MATTER, separating the medial part of the thalamus from the EPENDYMA of the THIRD VENTRICLE. The group includes the paraventricular nucleus, paratenial nucleus, reuniens nucleus, rhomboidal nucleus, and subfascular nucleus.
The vestibular part of the 8th cranial nerve (VESTIBULOCOCHLEAR NERVE). The vestibular nerve fibers arise from neurons of Scarpa's ganglion and project peripherally to vestibular hair cells and centrally to the VESTIBULAR NUCLEI of the BRAIN STEM. These fibers mediate the sense of balance and head position.
Lists of words, usually in alphabetical order, giving information about form, pronunciation, etymology, grammar, and meaning.
The yellow body derived from the ruptured OVARIAN FOLLICLE after OVULATION. The process of corpus luteum formation, LUTEINIZATION, is regulated by LUTEINIZING HORMONE.
The terms, expressions, designations, or symbols used in a particular science, discipline, or specialized subject area.
A diverse superfamily of proteins that function as translocating proteins. They share the common characteristics of being able to bind ACTINS and hydrolyze MgATP. Myosins generally consist of heavy chains which are involved in locomotion, and light chains which are involved in regulation. Within the structure of myosin heavy chain are three domains: the head, the neck and the tail. The head region of the heavy chain contains the actin binding domain and MgATPase domain which provides energy for locomotion. The neck region is involved in binding the light-chains. The tail region provides the anchoring point that maintains the position of the heavy chain. The superfamily of myosins is organized into structural classes based upon the type and arrangement of the subunits they contain.
Activated form of factor VII. Factor VIIa activates factor X in the extrinsic pathway of blood coagulation.
Immunoglobulin molecules having a specific amino acid sequence by virtue of which they interact only with the ANTIGEN (or a very similar shape) that induced their synthesis in cells of the lymphoid series (especially PLASMA CELLS).
The property of antibodies which enables them to react with some ANTIGENIC DETERMINANTS and not with others. Specificity is dependent on chemical composition, physical forces, and molecular structure at the binding site.
Immunoglobulins produced in response to VIRAL ANTIGENS.
Antibodies produced by a single clone of cells.
Immunoglobulins produced in a response to BACTERIAL ANTIGENS.
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)
Twelve pairs of nerves that carry general afferent, visceral afferent, special afferent, somatic efferent, and autonomic efferent fibers.
Disorders of one or more of the twelve cranial nerves. With the exception of the optic and olfactory nerves, this includes disorders of the brain stem nuclei from which the cranial nerves originate or terminate.
The 5th and largest cranial nerve. The trigeminal nerve is a mixed motor and sensory nerve. The larger sensory part forms the ophthalmic, mandibular, and maxillary nerves which carry afferents sensitive to external or internal stimuli from the skin, muscles, and joints of the face and mouth and from the teeth. Most of these fibers originate from cells of the TRIGEMINAL GANGLION and project to the TRIGEMINAL NUCLEUS of the brain stem. The smaller motor part arises from the brain stem trigeminal motor nucleus and innervates the muscles of mastication.
An oval, bony chamber of the inner ear, part of the bony labyrinth. It is continuous with bony COCHLEA anteriorly, and SEMICIRCULAR CANALS posteriorly. The vestibule contains two communicating sacs (utricle and saccule) of the balancing apparatus. The oval window on its lateral wall is occupied by the base of the STAPES of the MIDDLE EAR.
Dysfunction of one or more cranial nerves causally related to a traumatic injury. Penetrating and nonpenetrating CRANIOCEREBRAL TRAUMA; NECK INJURIES; and trauma to the facial region are conditions associated with cranial nerve injuries.
Diseases of the trigeminal nerve or its nuclei, which are located in the pons and medulla. The nerve is composed of three divisions: ophthalmic, maxillary, and mandibular, which provide sensory innervation to structures of the face, sinuses, and portions of the cranial vault. The mandibular nerve also innervates muscles of mastication. Clinical features include loss of facial and intra-oral sensation and weakness of jaw closure. Common conditions affecting the nerve include brain stem ischemia, INFRATENTORIAL NEOPLASMS, and TRIGEMINAL NEURALGIA.
Neurons of the innermost layer of the retina, the internal plexiform layer. They are of variable sizes and shapes, and their axons project via the OPTIC NERVE to the brain. A small subset of these cells act as photoreceptors with projections to the SUPRACHIASMATIC NUCLEUS, the center for regulating CIRCADIAN RHYTHM.
The study of the development of an organism during the embryonic and fetal stages of life.
The ten-layered nervous tissue membrane of the eye. It is continuous with the OPTIC NERVE and receives images of external objects and transmits visual impulses to the brain. Its outer surface is in contact with the CHOROID and the inner surface with the VITREOUS BODY. The outer-most layer is pigmented, whereas the inner nine layers are transparent.
Slender processes of NEURONS, including the AXONS and their glial envelopes (MYELIN SHEATH). Nerve fibers conduct nerve impulses to and from the CENTRAL NERVOUS SYSTEM.
The 2nd cranial nerve which conveys visual information from the RETINA to the brain. The nerve carries the axons of the RETINAL GANGLION CELLS which sort at the OPTIC CHIASM and continue via the OPTIC TRACTS to the brain. The largest projection is to the lateral geniculate nuclei; other targets include the SUPERIOR COLLICULI and the SUPRACHIASMATIC NUCLEI. Though known as the second cranial nerve, it is considered part of the CENTRAL NERVOUS SYSTEM.
Specialized PHOTOTRANSDUCTION neurons in the vertebrates, such as the RETINAL ROD CELLS and the RETINAL CONE CELLS. Non-visual photoreceptor neurons have been reported in the deep brain, the PINEAL GLAND and organs of the circadian system.
Specialized cells that detect and transduce light. They are classified into two types based on their light reception structure, the ciliary photoreceptors and the rhabdomeric photoreceptors with MICROVILLI. Ciliary photoreceptor cells use OPSINS that activate a PHOSPHODIESTERASE phosphodiesterase cascade. Rhabdomeric photoreceptor cells use opsins that activate a PHOSPHOLIPASE C cascade.
A species of bacteria found in the marine environment, sea foods, and the feces of patients with acute enteritis.
Proteins from BACTERIA and FUNGI that are soluble enough to be secreted to target ERYTHROCYTES and insert into the membrane to form beta-barrel pores. Biosynthesis may be regulated by HEMOLYSIN FACTORS.
Bites and stings inflicted by insects.
Carnivores of the genus Procyon of the family PROCYONIDAE. Two subgenera and seven species are currently recognized. They range from southern Canada to Panama and are found in several of the Caribbean Islands.
Individuals licensed to practice medicine.
Attitudes of personnel toward their patients, other professionals, toward the medical care system, etc.

Age-related blood flow and capillary changes in the rat utricular macula: a quantitative stereological and microsphere study. (1/15)

Vascular change may contribute to age-related vestibular dysfunction. Previously, we reported a significant age-related decrease in blood flow (BF) and mean capillary diameter (D(cap)) in the rat posterior canal crista. The purpose of this study was to examine an otolith organ, the utricle, for similar changes. Old male Fischer 344 rats (O; 28-31 mos) were anesthetized, and the left cardiac ventricle was transcutaneously injected with radioactive microspheres to determine BF. The temporal bones were removed, fixed, and decalcified. The utricles were dissected free and placed into a gamma counter with the reference samples. The specimens were then plastic embedded and serially sectioned at 1 microm according to the vertical section technique. Microsphere surface counts were made and neuroepithelial BF calculated. A systematic random set of sections was sampled and analyzed using stereological techniques for estimates of D(cap), capillary surface area/unit volume (S(v,cap)), capillary length/ unit volume (L(v,cap)), and volume of utricular neuroepithelium (V(ut)). Using these data, total capillary surface (S(cap)) and total length (L(cap)) were calculated. Statistical comparisons were made with data from our previous study of young animals (Y; 3-6 mos). Results indicate a significant age-related decrease in BF (Y = 0.125 microL/min, O = 0.062 microL/min; P = 0.003), D(cap) (Y = 5.95 micro, O = 4.57 microm; P = 0.0002), S(vcap) (Y = 12.33 mm2/mm3, = 9.87 mm2/mm3, P = 0.016), S(cap) (Y = 0.178 mm2, O = 0.129 mm2; p = 0.01), and V(ut) (Y = 0.014 mm3, O = 0.013 mm3; P = 0.04) with no significant change in L(v,cap) (Y = 655 mm/mm3, O = 686 mm/mm3, P = 0.41) or L(cap) (Y = 9.47 mm, O = 8.96 mm; P = 0.49). These age-related vascular changes are likely to have a significant impact on utricular physiological and thus, dysequilibrium.  (+info)

Afferent innervation patterns of the saccule in pigeons. (2/15)

The innervation patterns of vestibular saccular afferents were quantitatively investigated in pigeons using biotinylated dextran amine as a neural tracer and three-dimensional computer reconstruction. Type I hair cells were found throughout a large portion of the macula, with the highest density observed in the striola. Type II hair cells were located throughout the macula, with the highest density in the extrastriola. Three classes of afferent innervation patterns were observed, including calyx, dimorph, and bouton units, with 137 afferents being anatomically reconstructed and used for quantitative comparisons. Calyx afferents were located primarily in the striola, innervated a number of type I hair cells, and had small innervation areas. Most calyx afferent terminal fields were oriented parallel to the anterior-posterior axis and the morphological polarization reversal line. Dimorph afferents were located throughout the macula, contained fewer type I hair cells in a calyceal terminal than calyx afferents and had medium sized innervation areas. Bouton afferents were restricted to the extrastriola, with multi-branching fibers and large innervation areas. Most of the dimorph and bouton afferents had innervation fields that were oriented dorso-ventrally but were parallel to the neighboring reversal line. The organizational morphology of the saccule was found to be distinctly different from that of the avian utricle or lagena otolith organs and appears to represent a receptor organ undergoing evolutionary adaptation toward sensing linear motion in terrestrial and aerial species.  (+info)

Hair bundle heights in the utricle: differences between macular locations and hair cell types. (3/15)

Hair bundle structure is a major determinant of bundle mechanics and thus of a hair cell's ability to encode sound and head movement stimuli. Little quantitative information about bundle structure is available for vestibular organs. Here we characterize hair bundle heights in the utricle of a turtle, Trachemys scripta. We visualized bundles from the side using confocal images of utricular slices. We measured kinocilia and stereocilia heights and array length (distance from tall to short end of bundle), and we calculated a KS ratio (kinocilium height/height of the tallest stereocilia) and bundle slope (height fall-off from tall to short end of bundle). To ensure that our measurements reflect in vivo dimensions as closely as possible, we used fixed but undehydrated utricular slices, and we measured heights in three dimensions by tracing kinocilia and stereocilia through adjacent confocal sections. Bundle heights vary significantly with position on the utricular macula and with hair cell type. Type II hair cells are found throughout the macula. We identified four subgroups that differ in bundle structure: zone 1 (lateral extrastriola), striolar zone 2, striolar zone 3, and zone 4 (medial extrastriola). Type I hair cells are confined to striolar zone 3. They have taller stereocilia, longer arrays, lower KS ratios, and steeper slopes than do neighboring (zone 3) type II bundles. Models and experiments suggest that these location- and type-specific differences in bundle heights will yield parallel variations in bundle mechanics. Our data also raise the possibility that differences in bundle structure and mechanics will help explain location- and type-specific differences in the physiological profiles of utricular afferents, which have been reported in frogs and mammals.  (+info)

Regeneration of vestibular otolith afferents after ototoxic damage. (4/15)

Regeneration of receptor cells and subsequent functional recovery after damage in the auditory and vestibular systems of many vertebrates is well known. Spontaneous regeneration of mammalian hair cells does not occur. However, recent approaches provide hope for similar restoration of hearing and balance in humans after loss. Newly regenerated hair cells receive afferent terminal contacts, yet nothing is known about how reinnervation progresses or whether regenerated afferents finally develop normal termination fields. We hypothesized that neural regeneration in the vestibular otolith system would recapitulate the topographic phenotype of afferent innervation so characteristic of normal development. We used an ototoxic agent to produce complete vestibular receptor cell loss and epithelial denervation, and then quantitatively examined afferent regeneration at discrete periods up to 1 year in otolith maculas. Here, we report that bouton, dimorph, and calyx afferents all regenerate slowly at different time epochs, through a progressive temporal sequence. Furthermore, our data suggest that both the hair cells and their innervating afferents transdifferentiate from an early form into more advanced forms during regeneration. Finally, we show that regeneration remarkably recapitulates the topographic organization of afferent macular innervation, comparable with that developed through normative morphogenesis. However, we also show that regenerated terminal morphologies were significantly less complex than normal fibers. Whether these structural fiber changes lead to alterations in afferent responsiveness is unknown. If true, adaptive plasticity in the central neural processing of motion information would be necessitated, because it is known that many vestibular-related behaviors fully recover during regeneration.  (+info)

Zebrafish pax5 regulates development of the utricular macula and vestibular function. (5/15)

The zebrafish otic vesicle initially forms with only two sensory epithelia, the utricular and saccular maculae, which primarily mediate vestibular and auditory function, respectively. Here, we test the role of pax5, which is preferentially expressed in the utricular macula. Morpholino knockdown of pax5 disrupts vestibular function but not hearing. Neurons of the statoacoustic ganglion (SAG) develop normally. Utricular hair cells appear to form normally but a variable number subsequently undergo apoptosis and are extruded from the otic vesicle. Dendrites of the SAG persist in the utricle but become disorganized after hair cell loss. Hair cells in the saccule develop and survive normally. Otic expression of pax5 requires pax2a and fgf3, mutations in which cause vestibular defects, albeit by distinct mechanisms. Thus, pax5 works in conjunction with fgf3 and pax2a to establish and/or maintain the utricular macula and is essential for vestibular function.  (+info)

Architecture of the mouse utricle: macular organization and hair bundle heights. (6/15)

Hair bundles are critical to mechanotransduction by vestibular hair cells, but quantitative data are lacking on vestibular bundles in mice or other mammals. Here we quantify bundle heights and their variation with macular locus and hair cell type in adult mouse utricular macula. We also determined that macular organization differs from previous reports. The utricle has approximately 3,600 hair cells, half on each side of the line of polarity reversal (LPR). A band of low hair cell density corresponds to a band of calretinin-positive calyces, i.e., the striola. The relation between the LPR and the striola differs from previous reports in two ways. First, the LPR lies lateral to the striola instead of bisecting it. Second, the LPR follows the striolar trajectory anteriorly, but posteriorly it veers from the edge of the striola to reach the posterior margin of the macula. Consequently, more utricular bundles are oriented mediolaterally than previously supposed. Three hair cell classes are distinguished in calretinin-stained material: type II hair cells, type ID hair cells contacting calretinin-negative (dimorphic) afferents, and type IC hair cells contacting calretinin-positive (calyceal) afferents. They differ significantly on most bundle measures. Type II bundles have short stereocilia. Type IC bundles have kinocilia and stereocilia of similar heights, i.e., KS ratios (ratio of kinocilium to stereocilia heights) approximately 1, unlike other receptor classes. In contrast to these class-specific differences, bundles show little regional variation except that KS ratios are lowest in the striola. These low KS ratios suggest that bundle stiffness is greater in the striola than in the extrastriola.  (+info)

Resting discharge patterns of macular primary afferents in otoconia-deficient mice. (7/15)

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Immunohistochemical localization and mRNA expression of aquaporins in the macula utriculi of patients with Meniere's disease and acoustic neuroma. (8/15)

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The monoclinic dimorph of Cuboargyrite and Baumstarkite. The Se analogue is known as UM1987-15-Se:AgSSb. Black blocky, often striated crystals with dark red internal reflections to a cm. The crystals are difficult to orient and often form balls to a few cm. According to Nekrasov & Lunin (1987), the Se-free miargyrite (monoclinic, alpha form) transforms to the cubic (beta) form at 380°C, while the one containing 6.9 wt.% Se - at 300°C.
Two membranous sacs within the vestibular labyrinth of the INNER EAR. The saccule communicates with COCHLEAR DUCT through the ductus reuniens, and communicates with utricle through the utriculosaccular duct from which the ENDOLYMPHATIC DUCT arises. The utricle and saccule have sensory areas (acoustic maculae) which are innervated by the VESTIBULAR NERVE ...
Macula - definitie | SfatulMedicului.ro - 1. Termen anatomic avand semnificatia de arie deosebita structural de restul suprafetei din care face parte. macula lutea (pata galbena) este o depresiune ova...
To generate Ih activation curves with minimal contamination, tail currents were measured at −74 mV, near the reversal potential for the potassium-selective inward rectifier, IK1. The tail current was sampled at the moment of the step to −74 mV and plotted against prepulse potential. Conductance was calculated by dividing the Ih tail current by the difference (30 mV) between the step potential (−74 mV) and the experimentally determined reversal potential (−44 mV, as measured from type II hair cells in the presence of 500 μm BaCl2, which blocked IK1). Type II vestibular hair cells had a maximum conductance of 4.4 ± 2.6 nS, a half-activation voltage (V1/2) of −99 ± 6 mV, and a slope factor (S) of 8.5 ± 1.9 mV (n = 41; Fig. 2C). Under our experimental conditions, the conductance of Ih was slightly larger than previously reported in mouse vestibular hair cells (Rüsch et al., 1998), perhaps due to differences in the age of the cells or rundown of Ih. Because Ih can be modulated by a ...
The vitamin A-derived morphogen retinoic acid (RA) plays important roles during the development of chordate animals. The Aldh1a-family of RA-synthesizing enzymes consists of three members, Aldh1a1-3 (Raldh1-3), that are dynamically expressed throughout development. We have searched the known teleost genomes for the presence of Raldh family members and have found that teleost fish possess orthologs of Aldh1a2 and Aldh1a3 only. Here we describe the expression of aldh1a3 in the zebrafish, Danio rerio. Whole mount in situ hybridization shows that aldh1a3 is expressed during eye development in the retina flanking the optic stalks and later is expressed ventrally, opposite the expression domain of aldh1a2. During inner ear morphogenesis, aldh1a3 is expressed in developing sensory epithelia of the cristae and utricular macula and is specifically up-regulated in epithelial projections throughout the formation of the walls of the semicircular canals and endolymphatic duct. In contrast to the mouse inner ...
Welcome to the Acoustic Neuroma Association Australia (ANAA) a community based organisation that provides support and information, including treatment options, for people newly diagnosed with an acoustic neuroma, family members, professionals and others seeking to know more about Acoustic Neuroma tumours.
Definition of utricle in the Definitions.net dictionary. Meaning of utricle. What does utricle mean? Information and translations of utricle in the most comprehensive dictionary definitions resource on the web.
An acoustic neuroma tumour coats the hearing and balance nerves at the base of the brain. Read more about symptoms and treatment of acoustic neuromas.
Find the best acoustic neuroma doctors in Mumbai. Get guidance from medical experts to select acoustic neuroma specialist in Mumbai from trusted hospitals - credihealth.com
Looking for information on Acoustic Neuroma? Medigest has all you need to know about Acoustic Neuroma - Symptoms and Signs, Causes, Treatments and definition
The monoclinic dimorph of stolzite. Heating of raspite to 395(5)°C leads to a transformation into stolzite. A rare secondary mineral occurring in the oxidized zones of tungsten-bearing hydrothermal base metal deposits. An unusual Te-rich variety is described by Andrade et al. (2014).
after therapy in all seven patients, with gains of 4 to 38% points. CONCLUSIONS: Patients with acoustic neuromas who are being treated ...
Acoustic Neuroma - Etiology, pathophysiology, symptoms, signs, diagnosis & prognosis from the Merck Manuals - Medical Professional Version.
2017 Acoustic Neuroma Association • 600 Peachtree Parkway • Suite 108 • Cumming, GA 30041 • 770-205-8211 • Terms of Use ...
2017 Acoustic Neuroma Association • 600 Peachtree Parkway • Suite 108 • Cumming, GA 30041 • 770-205-8211 • Terms of Use ...
Learn more about Acoustic Neuroma Removal at Sky Ridge Medical Center DefinitionReasons for ProcedurePossible ComplicationsWhat to ExpectCall Your Doctorrevision ...
Learn more about Acoustic Neuroma at Doctors Hospital of Augusta DefinitionCausesRisk FactorsSymptomsDiagnosisTreatmentPreventionrevision ...
Without you in my life, I wont be here. You teach the right and wrong! You are specials and one in millions! Thank you to all teachers out there ...
Do you sense ringing in your ears? Acoustic neuroma is a condition in which tumor is formed on the cranial nerve connecting the middle ear and the brain. Acoustic neuroma can cause hearing loss and impair brain functions such as balancing, muscle control, facial expressions, etc. If any of these symptoms of acoustic neuroma are experienced by you, consult your physician regarding treatments. Surgery is usually performed to remove acoustic neuroma while preventing any damage to the ear and brain.
First, as you can see, I have added Acoustic Neuroma Association, where you can also download all the possible information associated with brain tumor and Acoustic Neuroma as you wish. There is a video explaining in details of Acoustic Neuroma. This association is recited in USA. I am already a member. This support group really helpful in order for me to cope with the changes in the future. In fact, most of the informations that we can get through are from the doctors and patients point of view. Although I am in other geographical area, with internet, this support group can across the borders and oceans. Is it fantastic ...
orientation of the stereocilia within the sensory epithelium is determined by the STRIOLA, a curved dividing ridge that runs through the middle of the MACULA - in the UTRICLE, the kinocilia are oriented TOWARD the striola, and in the SACCULE they are oriented AWAY from ...
Acoustic Neuroma: An Acoustic Neuroma also known as Vestibular Schwannoma is a slow growing tumor that develops on the cranial nerve that connects the ear to the brain.
An ENT doctor diagnosed that I have a 1.5 cm slow growing acoustic neuroma (based on MRI and ENG) and need to find an otoneurologist. I still have some hearing in the affected ear. Will that require s...
An acoustic neuroma is best described as a benign, or noncancerous, tumor that develops on the nerve that connects the inner ear to the brain.
34, tinnitus for a week in left ear, no fluid or wax, no infection, doctor today suspects acoustic neuroma, having MRI soon. I wondered if anyone...
Hi there,. I have created a blog that describes my journey with a non-cancerous acoustic neuroma. This has affected me in a variety of ways. In tis blog, I have included photos as well as my personal experience. Please take a look and share :).. Thank you so much ...
The worlds first wiki where authorship really matters. Due credit and reputation for authors. Imagine a global collaborative knowledge base for original thoughts.
இதில் கவனிக்க வேண்டிய விஷயம் இந்த செல்போன்களில் எந்த அளவு நன்மை உள்ளதோ அதை விட இருமடங்கு தீமைகளும் உள்ளது. தீமைகளில் முக்கியமானது இந்த செல்போன்களின் கதிர்வீச்சினால் நம் மூளை செயல் இழக்கும் மிகப்பெரிய அபாயம் உள்ளது. இந்த செல்போன் கதிர் வீச்சினால் மூளையில் இரண்டு வகையான (Gliomas, Acoustic neuromas) புற்றுநோய் கட்டிகள் உருவாவதாக நிபுணர்கள் தெரிவித்துள்ளனர். ஒரு நாளைக்கு 30 நிமிடங்களுக்கு ...
Our staff at Medifocus is committed to keeping our subscribers to the Medifocus Digest Alert on Acoustic Neuroma abreast of the latest new research developments that have recently been published in the medical literature for this condition. In this issue of the Digest Alert, you will find a focused list of hand-picked journal article references that represent the latest advances in basic and clinical research for Acoustic Neuroma. These articles represent the current state-of-the-art of the research that will hopefully lead to additional major advances and breakthroughs in the clinical management of Acoustic Neuroma. You can access the summaries of each article referenced below by simply clicking on the article Title ...
Founded in 1981, the Acoustic Neuroma Association is a patient organization dedicated to providing information and support to people diagnosed with, treated for, or affected by acoustic neuroma. It is an incorporated, non-profit organization, recognized as such by the IRS. ANA serves nearly 5,000 members, is governed by an all-patient Executive Board, and is operated by a small staff ...
Are you thinking of an Acoustic Neuroma Surgery in India? Perhaps this is the best decision that you have taken for your health because you will find top class surgeons performing the operations for you at few of the most advanced, well equipped hospitals in the country. When it comes to low cost, but effective and efficient acoustic neuroma surgery India should be the ideal place for an international patient. You may contact IndianHealthGuru, which is the top medical tourism companies in the country and you may expect the best of the medical and non medical assistance from them to get well soon!. You can also find us On. http://www.linkedin.com/company/indianhealthguru-consultants-pvt-ltd ...
Gadolinium-enhanced MRI scan is the definitive diagnostic test for acoustic neuroma and can identify tumors as small as 1-2 millimeter in diameter. On brain MRI, acoustic neuroma characterized by hypointense mass on T1-weighted MRI, and hyperintense mass on T2-weighted MRI. ...
Looking for online definition of maculae cribrosae in the Medical Dictionary? maculae cribrosae explanation free. What is maculae cribrosae? Meaning of maculae cribrosae medical term. What does maculae cribrosae mean?
Vertigo-like sensations or apparent perception of movement are reported by some subjects and operators in and around high field whole body magnetic resonance body scanners. Induced currents (which modulate the firing rate of the vestibular hair cell), magneto-hydrodynamics (MDH), and tissue magnetic …
Acoustic neuroma is a rare noncancerous tumor. It affects hearing and balance when the tumor presses on the nerves in the inner ear.
Acoustic neuroma is a rare noncancerous tumor. It affects hearing and balance when the tumor presses on the nerves in the inner ear.
An acoustic neuroma is a type of benign (noncancerous) brain tumor that grows on the vestibular nerve as it travels from the inner ear to the brainstem. It…
When 65-year-old Carolyn OBrien began having balance problems, she blamed the aging process. She was later diagnosed with acoustic neuroma.
MRI features are most consistent with an acoustic neuroma, compressing the cisternal portion of the ipsilateral trigeminal nerve.
Treatment of acoustic neuroma, a non-cancerous tumor at the base of the brain, and other skull-base tumors at Froedtert & the Medical College of Wisconsin.
Acoustic neuromas, sometimes called vestibular schwannomas, usually grow very slowly. Because of this, symptoms early on are often difficult to spot.
Find best Acoustic Neuroma Treatment Doctors in Bhubaneswar. Book appointments with expert doctors based on your medical condition. View doctor phone numbers and Consultation Timings in Clinics/Hospitals.
What ENT specialists in Bangalore say about acoustic neuroma in children and the treatment recommended by neurologists in Bangalore.
Learn more about Acoustic Neuroma Removal at Memorial Hospital DefinitionReasons for ProcedurePossible ComplicationsWhat to ExpectCall Your Doctorrevision ...
Dr. Farhad Limonadi, Southern California neurosurgeon, presents Acoustic Neuroma Case Study #1, 49-year-old gentleman with enlargement of vestibular schwannoma tumor.
Find best Acoustic Neuroma Treatment Doctors in Moradabad. Book appointments with expert doctors based on your medical condition. View doctor phone numbers and Consultation Timings in Clinics/Hospitals.
Sharp, clear, straight-ahead vision is processed by the macula. Includes a diagram of the human eye and a glossary of functions of different parts of the eye.
Build: Wed Jun 21 18:33:50 EDT 2017 (commit: 4a3b2dc). National Center for Advancing Translational Sciences (NCATS), 6701 Democracy Boulevard, Bethesda MD 20892-4874 • 301-435-0888. ...
Although there may be no symptoms in the early stages, a damaged macula can cause objects and faces to appear dark, blurry or distorted.
Svedin BT, Parker DL, Technical Note: The effect of 2D excitation profile on T1 measurement accuracy using the variable flip angle method with an average flip angle assumption. Med Phys 2017 Aug 10;:. de Bever JT, Od en H, Hofstetter LW, Parker DL, Simultaneous MR thermometry and acoustic radiation force imaging using interleaved acquisition. Magn Reson Med 2017 Aug 10;:. Svedin BT, Beck MJ, Hadley JR, Merrill R, de Bever JT, Bolster BD Jr, Payne A, Parker DL, Focal point determination in magnetic resonance-guided focused ultrasound using tracking coils. Magn Reson Med 2017 Jun;77(6):2424-2430. Iversen MM, Christensen DA, Parker DL, Holman HA, Chen J, Frerck MJ, Rabbitt RD, Low-intensity ultrasound activates vestibular otolith organs through acoustic radiation force. J Acoust Soc Am 2017 Jun;141(6):4209. Svedin BT, Payne A, Bolster BD Jr, Parker DL, Multiecho pseudo-golden angle stack of stars thermometry with high spatial and temporal resolution using k-space weighted image contrast. Magn Reson ...
Looking for medication to treat menieres disease? Find a list of current medications, their possible side effects, dosage, and efficacy when used to treat or reduce the symptoms of menieres disease
Affecting roughly 1 in 1500 people, Menieres Disease causes severe vertigo & loud, debilitating sounds. Find more information on Menieres Disease HERE
This category is for sites created by patients, their families, friends or caregivers about Menieres disease, vertigo and related problems. They may include journals, diaries and blogs.
Menieres disease frequently affects only one ear. People who suffer from this may also experience a feeling of fullness or congestion in the ...
Natural supplements for Menieres Disease, as well as knowledgeable support from our friendly staff. Discover true health the natural way, with Regenerative Nutrition
Here is a case of 38 years woman with menieres diseases since last 6 years, she started treatment with Life Force and within 8 months she was feeling better.
Danish researchers have found no support for Lennart Hardell and Kjell Hansson Milds contention that mobile phones increase the risk of acoustic neuromas. A team led by Christoffer Johansen of the Danish Cancer Society in Copenhagen compared the histories of 106 cases of acoustic neuromas, benign tumors of the cranial nerve, with those of 212 controls. There was no elevated rate of cancer, even among those who had used a cell phone for ten years or more.
A new mineral, metathénardite, ideally Na2SO4, the high-temperature hexagonal dimorph of thénardite, a natural analogue of the synthetic phase Na2SO4(I), was found in the sublimates of active fumaroles at the Second scoria cone of the Northern Breakthrough of the Great Tolbachik Fissure eruption, Tolbachik volcano, Kamchatka, Russia. The holotype originates from the Glavnaya Tenoritovaya fumarole in which metathénardite is associated with hematite, tenorite, fluorophlogopite, sanidine, anhydrite, krasheninnikovite, vanthoffite, glauberite, johillerite, and lammerite. The cotypes 1 and 2 are from the Arsenarnaya (with hematite, tenorite, fluorophlogopite, sanidine, euchlorine, wulffite, anhydrite, fluoborite, johillerite, nickenichite, calciojohillerite, badalovite, tilasite, cassiterite, and pseudobrookite) and the Yadovitaya (with tenorite, euchlorine, fedotovite, dolerophanite, langbeinite, krasheninnikovite, anhydrite, and hematite) fumaroles, respectively. All specimens with ...
Looking for online definition of macula lutea in the Medical Dictionary? macula lutea explanation free. What is macula lutea? Meaning of macula lutea medical term. What does macula lutea mean?
Definition of macula of retina in the Legal Dictionary - by Free online English dictionary and encyclopedia. What is macula of retina? Meaning of macula of retina as a legal term. What does macula of retina mean in law?
Acoustic neuromas usually occur in adults between age 30 and 60, but a failed hearing screening in five-year-old Adrianna Bowman led to a surprising acoustic
This is a series of blogs starting from the day I was diagnosed with an acoustic neuroma. If you want to start at the beginning then please follow this link: https://stellavig.blog/me-and-my-acoustic-neuroma/ Weeks 6 to 12 Determination has now taken over from Frustration. I need to set myself daily tasks that MUST be completed by the end…
Kelly Stafford, wife of Detroit Lions quarterback Matthew Stafford, is recovering after a 12-hour brain surgery to remove a tumor known as an acoustic neuroma. Doctors explain what her treatment and recovery may look like.
Learn more about Acoustic Neuroma Removal at Heartland Womens Group DefinitionReasons for ProcedurePossible ComplicationsWhat to ExpectCall Your Doctorrevision ...
Specific subpopulations of lung-related primary afferent neurons in dorsal root and vagal sensory ganglia have been reported to express P2X2 and P2X3 receptors both in the neuronal cell bodies and in their peripheral terminals. The afferent innervation of airways and lungs is organised as sensory receptor structures, of which at least seven types with a vagal origin and two with a spinal origin have been reported. In view of the recently suggested therapeutic promise of ATP antagonism - specifically at P2X3 receptor expressing nociceptive fibres - in respiratory disorders, the present work focusses on four distinct populations of pulmonary sensory receptors that have so far been reported to express P2X2/3 receptors ...
This is an case sample showing Prostate MRI PUC prostatic utricle cyst proteinous peripheral Zone T2, taken from the PANTAVISION Atlas on Prostate MRI.
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Q: I have been diagnosed with Menieres disease in my right ear. So far Ive used conservative measures, such as dietary changes, diuretics, sedatives and oral steroids, but they havent helped. My …
Have suffered with this disease for many, many years. For no reason, I will have an attack and experience a headache, become very hot and finally start
Developed in 2007-2008, diameter 0.9 mm, steering range: ±90º in all directions.. The retina is a light-sensitive layer at the inside of the eye. The macula is the region at the center of the retina with the highest concentration of light-sensitive cells. Macula degeneration - a disease which is a major cause of blindness - is caused by a disfunctioning choroid layer under the macula. A way to treat macula degeneration is to perform surgery to the choroid layer via a tiny incision in the retina near the macula. Reaching the choroid layer under the macula is extremely difficult as the surgeon has to operate through the incision under an angle while avoiding damage to the extremely delicate macula layer. A steerable instrument could potentially solve this issue by making it easier to steer the instrument through the incision.. The largest design and fabrication challenge of such an instrument is the extreme miniaturization of the steerable mechanism in the tip. Down-scaling our patented ...
Luis Lassaletta is the author of this article in the Journal of Visualized Experiments: A Comparative Study of Drug Delivery Methods Targeted to the Mouse Inner Ear: Bullostomy Versus Transtympanic Injection
Acoustic neuroma is a benign tumor that affects the nerves between the inner ear and the brain. It can lead to hearing loss, tinnitus, and a loss of balance. This article explores the treatments, symptoms, and causes of acoustic neuroma and the complications that can arise if a person does not seek treatment.
Self Help UK is a free searchable database of over 1,000 self help organisations and support groups across the UK. That provide support, guidance and advice to patients, carers and their relatives
... localization and mRNA expression of aquaporins in the macula utriculi of patients with Meniere's disease and acoustic neuroma ...
... acoustic maculae MeSH A09.246.631.909.625.125.340 - hair cells, vestibular MeSH A09.246.631.909.625.125.680 - otolithic ... macula lutea MeSH A09.371.729.522.436 - fovea centralis MeSH A09.371.729.690 - optic disk MeSH A09.371.729.727 - photoreceptors ...
Macula[edit]. Macula of utricle. illustration of otolith organs showing detail of utricle, otoconia, endolymph, cupula, macula ... it receives the utricular filaments of the acoustic nerve. ... The macula of utricle (macula acustica utriculi) is a small (2 ... The macula is also sensitive to linear acceleration as the inertia possessed by the statoconia can also shift the gelatinous ... When you stop at the next light, the macula stops but the otolithic membrane keeps going for a moment, bending the stereocilia ...
... macula cribrosa media) for the passage of filaments of the acoustic nerve to the saccule; and behind this depression is an ... The pyramid and adjoining part of the recessus ellipticus are perforated by a number of holes (macula cribrosa superior). The ... which is perforated by a number of holes for the passage of filaments of the acoustic nerve which supply the vestibular end of ...
... or saccular macula), to which are distributed the saccular filaments of the acoustic nerve. The vestibule is a region of the ... The macula of saccule lies in a nearly vertical position. It is a 2mm by 3mm patch of hair cells. Each hair cell of the macula ... The macula of the utricle is in a horizontal position and detects horizontal acceleration. The coordinated sensory perception ... Its anterior part exhibits an oval thickening, the macula of saccule ( ...
The other two sensory organs supplied by the vestibular neurons are the maculae of the saccule and utricle. Hair cells of the ... Some older texts call the nerve the acoustic or auditory nerve, but these terms have fallen out of widespread use because they ... The Acoustic Nerve. Gray, Henry. 1918. Anatomy of the Human Body". www.bartleby.com. Vestibulocochlear nerve Superficial ... It emerges from the pontomedullary junction and exits the inner skull via the internal acoustic meatus (or internal auditory ...
"Macula (Far from Mother Land)" (Takasaki) - 4:46 "Ebony Eyes" (Takasaki, Milky Way) - 5:31 Side two "Wild Boogie Run" (Sasaji ... electric and acoustic guitars, lead vocals on track 4, backing vocals, producer Masanori Sasaji - keyboards and synthesizers, ...
The macula sacculi detects vertical acceleration while the macula utriculi is responsible for horizontal acceleration. These ... acoustic hair cells, auditory cells or cells of Corti. The organ of Corti is lined with a single row of inner hair cells and ... They contain the sensory hair cells and otoliths of the macula of utricle and of the saccule, respectively, which respond to ... bony fish contain a sensory cluster called the macula neglecta in the utricle that may have this function. Although fish have ...
... enlargement lumbosacral plexus lumbrical lunate lung lymph lymph nodes lymphatic system lymphatic vessels macroscopic macula ... accessory cuneate nucleus accessory nerve accessory olivary nucleus accommodation reflex acetabulum Achilles tendon acoustic ... interhemispheric fissure intermediate horn cell intermediolateral cell column intermediolateral nucleus internal acoustic ...
Linda went on to release her single acoustic album "Jam" (I am) in 2011 which was written and composed by her. She was the ... In 1978 the famous guitarist and composer Nexhat Macula formed one of the best Albanian rock bands of all time, called "TNT" in ...
T. obscure cinereus, subtus pallide cinereus, macula alarum albida Jobling, James A (2010). The Helm Dictionary of Scientific ... that mimicry in the mockingbird resulted from the bird being genetically predisposed to learning vocalizations with acoustic ...
... unspecified 388.3 Tinnitus 388.4 Other abnormal auditory perception 388.5 Disorders of acoustic nerve 388.6 Otorrhoea 388.7 ... proliferative retinopathy 362.3 Retinal vascular occlusion 362.4 Separation of retinal layers 362.5 Degeneration of macula and ...
In some deep sea fishes like the Antimora, the swim bladder maybe also connected to the macula of saccule in order for the ... It simulates high-energy sound waves in aquatic far-field, plane-wave acoustic conditions. Siphonophores have a special swim ... Published by WCB/McGraw-Hill, p. 12 ISBN 0-697-28654-1 Love R. H. (1978). "Resonant acoustic scattering by swimbladder-bearing ... Baik K. (2013). "Comment on "Resonant acoustic scattering by swimbladder-bearing fish" [J. Acoust. Soc. Am. 64, 571-580 (1978 ...
An acoustic mirror reflects sound waves. Objects such as walls, ceilings, or natural rock-formations may produce echos, and ... "speculum sine macula", or as attributes of scholarly and theological wisdom and knowledge as they appear in book illuminations ... Acoustic mirrors may be used for applications such as parabolic microphones, atmospheric studies, sonar, and sea floor mapping ... ISBN 0-465-05471-4 M. A. Kallistratova (1997). "Physical grounds for acoustic remote sensing of the atmospheric boundary layer ...
Neural Basis of Behavioral Adaptations, 1-9 Payne, Roger S.. Acoustic Location of Prey by Barn Owls (Tyto alba). J Exp Biol. ... The cochlear duct of the owl contains the basilar papilla, the tectorial membrane, the tegmentum vasculum, and the macula of ... The lateral shell projects to the external nucleus, where each space-specific neuron responds to acoustic stimuli only if the ...
The cochlear nerve (also auditory or acoustic neuron) is one of two parts of the vestibulocochlear nerve, a cranial nerve ...
The ear canal (external acoustic meatus, external auditory meatus, EAM) is a pathway running from the outer ear to the middle ...
One way this is done is through environmental modifications such as acoustic quieting, which may be achieved with as basic a ...
this refers to the inner ear structure, not the macula of the retina. We follow ZFA in including a grouping class for the ... macula. Go to external page http://purl.obolibrary.org/obo/UBERON_0000054 Copy ...
The utricle and saccule have sensory areas (acoustic maculae) which are innervated by the VESTIBULAR NERVE. ...
The vestibular fibers arise in bipolar cells in the vestibular ganglion in the internal acoustic meatus. ... Distributed to the maculae of the utricle and saccule and to the ampullary crests of the semicircular ducts. The vestibular ... Distributed to the maculae of the utricle and saccule and to the ampullary crests of the semicircular ducts. ... fibers arise in bipolar cells in the vestibular ganglion in the internal acoustic meatus. [ http://www.dartmouth.edu/~ ...
... macula lutea explanation free. What is macula lutea? Meaning of macula lutea medical term. What does macula lutea mean? ... Looking for online definition of macula lutea in the Medical Dictionary? ... 4. macula lutea. adj., adj mac´ular, mac´ulate.. acoustic maculae (ma´culae acus´ticae) the macula sacculi and macula utriculi ... macula lu´tea (macula lu´tea re´tinae) (macula re´tinae) an irregular yellowish depression on the retina, lateral to and ...
... localization and mRNA expression of aquaporins in the macula utriculi of patients with Menieres disease and acoustic neuroma. ... Furthermore, decreased expression of AQP4 in the macula utriculi of patients with Menieres disease has been reported (Ishiyama ...
... macula explanation free. What is macula? Meaning of macula medical term. What does macula mean? ... Looking for online definition of macula in the Medical Dictionary? ... 4. macula lutea. adj., adj mac´ular, mac´ulate.. acoustic maculae (ma´culae acus´ticae) the macula sacculi and macula utriculi ... Related to macula: macula densa, macula adherens. macula. [mak´u-lah] (L.) 1. a stain, spot, or thickening; in anatomy, an area ...
... localization and mRNA expression of aquaporins in the macula utriculi of patients with Menieres disease and acoustic neuroma. ...
Immediately after exposure, damage was observed in the macula statica princeps and on the crista sensory epithelia. Kinocilia ... If the relatively low levels and short exposure applied in this study can induce severe acoustic trauma in cephalopods, the ... The observed impacts on the stato-acoustic organs of the noise-exposed cephalopods suggests the occurrence of an excito-toxic ... to mid-intensity acoustic stimuli have to date not been known to lead to any obvious mechanical damage to the sensory epithelia ...
... or saccular macula), to which are distributed the saccular filaments of the acoustic nerve. The vestibule is a region of the ... The macula of saccule lies in a nearly vertical position. It is a 2mm by 3mm patch of hair cells. Each hair cell of the macula ... The macula of the utricle is in a horizontal position and detects horizontal acceleration. The coordinated sensory perception ... Its anterior part exhibits an oval thickening, the macula of saccule ( ...
... localization and mRNA expression of aquaporins in the macula utriculi of patients with Menieres disease and acoustic neuroma ...
Macula[edit]. Macula of utricle. illustration of otolith organs showing detail of utricle, otoconia, endolymph, cupula, macula ... it receives the utricular filaments of the acoustic nerve. ... The macula of utricle (macula acustica utriculi) is a small (2 ... The macula is also sensitive to linear acceleration as the inertia possessed by the statoconia can also shift the gelatinous ... When you stop at the next light, the macula stops but the otolithic membrane keeps going for a moment, bending the stereocilia ...
... located medially between it and the lateral most part of the internal acoustic meatus. It represents clusters of small foramina ... The macula cribrosa is part of the vestibule of the inner ear, ... macula cribrosa media: saccular nerve fibers. * macula cribrosa ... The macula cribrosa is part of the vestibule of the inner ear, located medially between it and the lateral most part of the ... Macula cribrosa. Dr Daniel J Bell ◉ and Assoc Prof Frank Gaillard ◉ ◈ et al. ...
The projections emanating from immature vestibular hair cells observed at P0 in the utricular maculae of je/je and +/+ mice ... Auditory brainstem response thresholds were defined as sound levels required for a visible response to acoustic stimuli. The ... B,C) Higher magnification views of the P40 je/je macula and anterior crista shown in panel A. White lines enclose the ... Utricular macula. Differences in stereociliary width and length were shown to special advantage by hair cells in the ...
A supporting cell, as in the acoustic macula, organ of Corti, olfactory epithelium, taste buds, or testes. ... An epithelial cell possessing stereocilia in the maculae, cristae ampullaris, and organ of Corti. These cells are receptors for ...
c. it is essentially a test of the macula d. the result is abnormal in patients with ocular albinism e. it can be used to ... b. bilateral acoustic neuroma c. Lischs nodules d. cerebral meningioma e. cavernous haemangioma of the retina answer. 30. a.T ...
Following acoustic trauma in the zebrafish inner ear, we used microarray analysis to identify genes involved in inner ear ... since GH was significantly up-regulated following acoustic trauma. Microarray analysis, validated with the aid of quantitative ... repair following acoustic exposure. Additionally, we investigated the effect of growth hormone (GH) on cell proliferation in ... teleost fishes are capable of regenerating sensory inner ear hair cells that have been lost following acoustic or ototoxic ...
Chang S, Fong KE Serous detachment of the macula associated with congenital pit of the optic nerve head. J. Oph. Photog. 19809; ... Chang S, Coleman DJ, Lizzi FL Acoustic measurements of vitreous membrane and retinal thickness in Thijssen JM, Verbeek AM (eds ... Guyer DR, Yannuzzi LA, Chang S, Shields JA, Green WR (editors): Retina-Vitreous-Macula. W.B. Saunders, Philadelphia, 1999. ... Retina-Vitreous-Macula. W.B. Saunders, Philadelphia, 1999. ... Retina-Vitreous-Macula. W.B. Saunders, Philadelphia, 1999. ...
Mechanoreceptors located in the acoustic maculae and the semicircular canals that mediate the sense of balance, movement, and ...
Receptors vestibular system (the macula, or a fixed spot) located utricle and saccule, as well as ampula of three semicircular ... The auditory system includes the outer, middle and inner ear; consist of the cochlea, cochlear nerve, central acoustic nuclei ... Hair cell of Cortis organ of the cochlea are specialized acoustic receptors, which convert electrical impulses into mechanical ... connected to the cochlear nerve in the inner part of internal acoustic passage, go to the cerebellopontine angle, enter ...
Retinal burns are most likely to occur in the area of central vision, the macula lutea, having dimensions of approximately 2.0 ... Thermal burn, acoustic damage, or photochemical alteration is possible depending upon the energy absorbed. The biological ... The central region of the macula, termed the fovea centralis, is only about 150 micrometers in diameter and provides detailed ... Lasers operating in pulsed mode present an additional hazard from the possibility of acoustic shock wave generation in the ...
The maculae (p 47) consist of flat plates of sensory (hair) and supporting cells. Nerve fibers enter the maculae from beneath ... acoustic neuroma, or sudden hearing loss. Sensorineural hearing loss may be the result of exposure to ototoxic drugs (e.g., ... The end organs for gravity and motion detection consist of five separate sensory organs: the macula of the utricule (pp 47 and ... maculae of the utricule and saccule, cristae of the superior, lateral and posterior semicircular canals). The senses of hearing ...
macula densa: tall, narrow cells in distal tubules. monitor osmolarity and volume of urine that passes into distal tubules. ... macula densa: tall narrow cells in distal tubules, sense osmolarity & volume in tubules ... juxtaglomerular apparatus: JG cells and macula densa. juxtaglomerular cells: modified SMOOTH MUSCLE CELLS located in alls of ... acoustic reflex? dampens effects of prolonged loud noise by contracting stapedius & tensor tympani. ...
Pseudophakic RDs either progress rapidly due to continuous vitreous traction or had already progressed to involving the macula ... explanations for retinal break formation following laser capsulotomy include rupture of the anterior vitreous face or acoustic ... A multiplicity of retinal breaks, poor visibility of breaks, a threatened macula, or macular detachment on presentation ...
The internal acoustic meatus (figs. 5 and 7) presents a rounded border, although its edges are somewhat straightened below and ... It transmits the posterior ampullary nerve to the inferior cribriform macula. The other four are parts of the crescentic ... If the lower edge of the internal acoustic meatus (figs. 5 and 7) be followed forward and inward it passes over the upper edge ... After entering the internal acoustic meatus it traverses the facial foramen in a direction outward and slightly forward and ...
At the first visit, exudative retinal detachment was observed from the upper retina to the macula of the right eye. Inside the ... such as acoustic shadow, were present (arrow, Fig. 1c). The fundus of the left eye had no abnormal findings. No special ... Further, the retinal structure of the macula had recovered, and right vision had improved to 20/20. ...
1-E The acoustic neuroma (acoustic schwannoma), which represents 8% of primary intracranial neoplasma, is found in the ... It contains bipolar neurons that innervate the hair cells of the cristae ampullares and the maculae of the utricle and the ... 17-C The acoustic schwannoma, which is found in the cerebellopotine (CP) angle of the posterior cranial fossa, impinges on CNs ... C. Acoustic schwannoma. D. Medial longitudinal fasciculus (MLF) syndrome. E. Multiple selerosis. 18. Is an inner ear disease ...
saccular macula - (macula of saccule) thickened anterior part of the saccule containing the saccular filaments of the acoustic ... macula - (Latin, macula = spot; lutea = yellow) region near the center of the retina containing two or more layers of ganglion ... internal auditory meatus - (internal acoustic meatus, IAM) Anatomical canal in which CN VII and CN VIII ganglia reside and pass ... fovea - (fovea centralis; Latin, fovea = pit) retina region located in the center of the macula, required for sharp central ...
1895-1901 - normal macula lies in spring, e. Exudate in avf lead iii are not have been worked out of wave. ● abdomen side with ... The history may involve the drainage of cardiology, sporadically, move the acoustic duct and downwards. The sensitivity, 000 ...
Macula: thickening OU; diabetic macular edema L,R. Gonioscopy: open angles OU. Upon cessation of the prostaglandin analog on ... Cessation of the prostaglandin on August 19, 2014 resulted in partial return of acoustic function. Normal hearing function ... Macula: diabetic macular edema OU. Gonioscopy: open angles OU. ...
Scribner took him up, reapply the cherry-red macula. Conditions such as the patient standing of long enough information at 8- ... Tapping over the posterior acoustic shadowing suggestive of the diagnosis. Further assessment has said for ova. Monofilament ...
  • The utricle and saccule have sensory areas (acoustic maculae) which are innervated by the VESTIBULAR NERVE. (harvard.edu)
  • macula sac´culi a thickening on the wall of the saccule where the epithelium contains hair cells that receive and transmit vestibular impulses. (thefreedictionary.com)
  • Distributed to the maculae of the utricle and saccule and to the ampullary crests of the semicircular ducts. (ebi.ac.uk)
  • Its anterior part exhibits an oval thickening, the macula of saccule (or saccular macula), to which are distributed the saccular filaments of the acoustic nerve. (wikipedia.org)
  • The vestibule is a region of the inner ear which contains the saccule and the utricle, each of which contain a macula to detect linear acceleration. (wikipedia.org)
  • The macula of saccule lies in a nearly vertical position. (wikipedia.org)
  • The temporal bone contains the organs for hearing (i.e., organ of Corti) and the detection of gravity, linear and rotational motion (i.e., maculae of the utricule and saccule, cristae of the superior, lateral and posterior semicircular canals). (cdc.gov)
  • The end organs for gravity and motion detection consist of five separate sensory organs: the macula of the utricule (pp 47 and 50) and macula of the saccule, both housed in the vestibule and three cristae, one in the ampullated end of the superior, lateral (or horizontal) and posterior semicircular canals (pp 48-50). (cdc.gov)
  • The vestibular structures, including Scarpa's ganglion (vestibular ganglion, VG), maculae of utricle and saccule, and ampullary cristae, from normal Sprague-Dawley rats were processed immunohistochemically for VGluTs, by avidin-biotinylated peroxidase complex method, with 3-3'-diaminobenzidine (DAB) as chromogen. (bvsalud.org)
  • Since both the vestibular organs (such as the saccule) and the auditory components (such as the cochlea) are located near the stapes, acoustic stimuli may trigger acoustic-motor responses by stimulating each of these regions. (vestibulology.com)
  • The neurosensory structures involved in hearing and equilibrium are located in the membranous labyrinth: the organ of Corti is located in the cochlear canal, while the maculae of the utricle and the saccule and the ampullae of the semicircular canals are located in the posterior section. (iloencyclopaedia.org)
  • [2] The corresponding tissue within the utricle and saccule is known as the macula and is located on the floor and medial wall of each organ, respectively. (physio-pedia.com)
  • A gelatinous membrane surmounting the acoustic maculae of the saccule and utricle and containing minute calciferous granules, known as otoconia , otoliths , or statoconia. (medical-dictionary.cc)
  • this refers to the inner ear structure, not the macula of the retina. (ebi.ac.uk)
  • The macula is the most sensitive part of the retina and is devoid of blood vessels. (thefreedictionary.com)
  • A small area of the retina of approximately 1.5 mm in diameter situated within the macula lutea. (thefreedictionary.com)
  • At the first visit, exudative retinal detachment was observed from the upper retina to the macula of the right eye. (springer.com)
  • The macula edema, macula hole, epiretinal membrane, vitreoretinal composition, RPE and sensorial retina decollements may be examined in-depth and in detail. (koruhastanesi.com)
  • b) sclera- 2) Vascular Tunic a) iris- b) ciliary body- c) choroid- 3) Nervous Tunic a) retina- b) retinal pigment epithelium- Contains photoreceptors (rods and cones) Function- **The macula lutea is located in the center of the retina, composed mostly of cones. (unf.edu)
  • Rods are not in the macula, but rather in the periphery of the retina. (unf.edu)
  • Originally intended primarily for retina specialists to image the macula, it has found its role in other subspecialties that include glaucoma, cornea, and ocular oncology. (biomedsearch.com)
  • acoustic maculae ( ma´culae acus´ticae ) the macula sacculi and macula utriculi considered together. (thefreedictionary.com)
  • Immunohistochemical localization and mRNA expression of aquaporins in the macula utriculi of patients with Meniere's disease and acoustic neuroma. (abcam.com)
  • The otolithic membrane of the macula utriculi briefly lags behind the rest of the tissues, bends the stereocilia backward, and stimulates the cells. (wikipedia.org)
  • The macula cribrosa is part of the vestibule of the inner ear , located medially between it and the lateral most part of the internal acoustic meatus . (radiopaedia.org)
  • Unlike mammals, teleost fishes are capable of regenerating sensory inner ear hair cells that have been lost following acoustic or ototoxic trauma. (biomedcentral.com)
  • Following acoustic trauma in the zebrafish inner ear, we used microarray analysis to identify genes involved in inner ear repair following acoustic exposure. (biomedcentral.com)
  • Disease entities of the inner ear include: congenital malformations, loss of sensory cells and nerve fibers (i.e., sensorineural hearing loss), cochlear otosclerosis, Meniere's disease, acoustic neuroma, or sudden hearing loss. (cdc.gov)
  • Future studies investigating functional morphology, phylogenetic potential of inner ear features, or evolution of hearing and inner ear specialization in fishes may benefit from the use of 3D models of inner ears and maculae. (biomedcentral.com)
  • Further, the retinal structure of the macula had recovered, and right vision had improved to 20/20. (springer.com)
  • We compared the accuracy of axial length (AL) measurement obtained by optical biometry with that obtained by acoustic biometry in eyes with rhegmatogenous retinal detachment (RRD). (dovepress.com)
  • Her diabetic retinopathy has progressed significantly and there is non-macula retinal oedema present. (centreforeyehealth.com.au)
  • Structural measurements that are clinically relevant to glaucoma diagnosis include thickness of the peripapillary retinal nerve fiber layer (RNFL), 2 , 3 characteristics of the optic nerve head (ONH), such as cup to disc ratio and neural rim area, 2 , 4 and thickness of the inner layers of the macula. (arvojournals.org)
  • BPPV is caused by free otoconia dislodged from the utricular macula that have entered the semicircular canal, where they provoke an inappropriate flow of endolymph whenever the head is rotated in the plane of the affected canal [15]. (thefreedictionary.com)
  • Although the pathophysiological process of the disease has not been fully clarified, currently, the widely accepted opinion is that the disease results from the accumulation of otoconia that are detached from the utricular macula in the semicircular canals and thereby sensitizing such canals to gravity (1). (thefreedictionary.com)
  • Dynamic response to sound and vibration of the guinea pig utricular macula, measured in vivo using Laser Doppler Vibrometry. (cocites.com)
  • In each of the end organs, the sensory epithelium (macula) is overlain by a massive calcium carbonate biomineralisate, the otolith. (biomedcentral.com)
  • However, iodine stained samples of cichlids [ 5 ] did not provide a sufficient contrast to discriminate otolith, otolithic membrane, maculae, and innervating nerve fibers of the VIII th cranial nerve. (biomedcentral.com)
  • Irregular primary otolith afferents from the guinea pig utricular and saccular maculae respond to both bone conducted vibration and to air conducted sound. (cocites.com)
  • 1-E The acoustic neuroma (acoustic schwannoma), which represents 8% of primary intracranial neoplasma, is found in the cerebellopontine (CP) angle. (brainscape.com)
  • It represents clusters of small foramina that permit the passage of vestibular nerve fibers from the internal acoustic foramen into the vestibule. (radiopaedia.org)
  • it receives the utricular filaments of the acoustic nerve . (wikipedia.org)
  • Nerve fibers enter the maculae from beneath the epithelium to innervate the hair cells. (cdc.gov)
  • As a receptor of the auditory system, the cochlea transforms the acoustic energy of sound waves into energy stimulating the nerve fibers. (thefreedictionary.com)
  • The descending branches of those same nerve fibers make contact as pericellular nests of boutons terminaux or boutons en passage neurons of different classes within PVCN and DCN, and here the transformations are quite different from those in AVCN. (scribd.com)
  • The upper part of the vestibular nerve innervates the anterior part of the saccular macula, but the lower part innervates the posterior part. (vestibulology.com)
  • The vestibular fibers arise in bipolar cells in the vestibular ganglion in the internal acoustic meatus. (ebi.ac.uk)
  • Section of the facial and acoustic nerves within internal acoustic meatus (the separation between them is not apparent in the section). (wikidoc.org)
  • macula utri´culi a thickening in the wall of the utricle where the epithelium contains hair cells that are stimulated by linear acceleration and deceleration and by gravity. (thefreedictionary.com)
  • It is believed that the macula of the lagena takes part in the functioning of the vestibule and that the macula is sensitive to low-frequency vibrations and sounds. (thefreedictionary.com)
  • 2) Intense VGluT3 immunoreactivity was detected in large number of sensory epithelia cells, and weak labeling of VGluT3-positive afferent fibers was in the maculae and ampullary cristae. (bvsalud.org)
  • Central high-acuity vision occurs when an image is focused directly on the fovea centralis of the macula lutea. (thefreedictionary.com)
  • juxtaglomerular apparatus: JG cells and macula densa juxtaglomerular cells: modified SMOOTH MUSCLE CELLS located in alls of afferent and efferent arterioles. (brainscape.com)
  • The full visual acuity is possible only by the use of the centre of the macula-the fovea. (thefreedictionary.com)
  • When you stop at the next light, the macula stops but the otolithic membrane keeps going for a moment, bending the stereocilia forward. (wikipedia.org)
  • Sensory cells in the acoustic maculae with their apical STEREOCILIA embedded in a gelatinous OTOLITHIC MEMBRANE. (bvsalud.org)
  • This response is recorded as a change in the activity of the SCM muscle after stimulation of the vestibular system with acoustic signals of approximately 90 dB HL and greater. (vestibulology.com)
  • The sacculus of some fishes has only one sensory patch, or macula. (thefreedictionary.com)
  • Most fishes, with the exception of those of the order Chimaeriformes, have a special organ of hearing in the sacculus-the lagena with a macula distinct from the original acoustic macula. (thefreedictionary.com)
  • Each hair cell of the macula contains 40 to 70 stereocilia and one true cilia, called a kinocilium. (wikipedia.org)
  • 1977) that each individual cycle of the waveform, either BCV or ACS, is the effective stimulus to the receptor hair cells on either macula. (qxmd.com)
  • According to the widely accepted theory (canalithiasis), otoconia dislodged from the utricular or saccular macula subsequently move into the semicircular canal (SCC) and cause an endolymph displacement that stimulates the cupula of the SCC (4). (thefreedictionary.com)
  • Our results indicate that reliable 3D reconstructions of inner ears including otoliths and maculae can be obtained by using high-resolution microCT imaging of specimens stained with phosphotungstic acid. (biomedcentral.com)
  • Immediately after exposure, damage was observed in the macula statica princeps and on the crista sensory epithelia. (windturbinesyndrome.com)
  • While a number of studies have illustrated and analyzed 3D models of inner ears in higher vertebrates, inner ears in fishes have rarely been investigated in 3D, especially with regard to the sensory epithelia of the end organs, the maculae. (biomedcentral.com)
  • It has been suggested that the 3D curvature of these maculae may also play an important role in hearing abilities in fishes. (biomedcentral.com)
  • The aim of our study therefore was to establish a fast and more reliable method to three-dimensionally reconstruct whole inner ears of fishes with special focus on the reconstruction of the 3D curvature of maculae. (biomedcentral.com)
  • By presenting high-intensity acoustic stimuli to the ear, a set of reflexes are activated. (vestibulology.com)
  • Safe Use of Acoustic Vestibular-Evoked Myogenic Potential Stimuli: Protocol and Patient-Specific Considerations. (cocites.com)
  • The basilar membrane forms the inferior surface of the cochlear canal, and supports the organ of Corti, responsible for the transduction of acoustic stimuli. (iloencyclopaedia.org)
  • It is commonly juxtapapillary or peripapillary, but may extend to the macula. (aao.org)
  • There are also connections between the principal auditory centers and the cranial and spinal motor nuclei, which subserve acoustic reflexes, but little is known about them. (scribd.com)
  • Embrace the anatomical abnormality in the macula: there may be in emergencies. (thenectarystpaul.com)
  • If the relatively low levels and short exposure applied in this study can induce severe acoustic trauma in cephalopods, the effects of similar noise sources [such as wind turbine arrays] on these species in natural conditions over longer time periods may be considerable. (windturbinesyndrome.com)
  • Additionally, we investigated the effect of growth hormone (GH) on cell proliferation in control zebrafish utricles and saccules, since GH was significantly up-regulated following acoustic trauma. (biomedcentral.com)
  • The high resolution and in-depth imaging enables to detect and follow the macula diseases in quantitative templates. (koruhastanesi.com)
  • Pattern dystrophy of the macula- In a study on 22 confirmed cases of PXE, pattern dystrophy was noted in 27 eyes of 16 patients. (statpearls.com)
  • A pathological response consisting of fluid accumulation in the outer plexiform layer of the central macula that results in the formation of visible cystic spaces. (wordpress.com)
  • An instrument which employs acoustic radiation at microwave frequencies to allow visualization of the microscopic detail exhibited in elastic properties of an object. (thefreedictionary.com)
  • We therefore set out to develop a fast and reliable approach for detailed 3D visualization of whole inner ears as well as maculae. (biomedcentral.com)
  • The maculae (p 47) consist of flat plates of sensory (hair) and supporting cells. (cdc.gov)
  • Maculae are characterized by orientation patterns of ciliary bundles of the sensory hair cells, i.e. the morphologically and physiologically polarized ciliary bundles form differently oriented groups on the macula. (biomedcentral.com)
  • PTA staining and subsequent high-resolution contrast enhanced microCT imaging is a powerful method to obtain 3D models of fish inner ears and maculae in a fast and more reliable manner. (biomedcentral.com)
  • Acoustic analysis and subsequent generations of couples with the excesses of presentation or grey-scale ultrasound use of possible to clinical research in the biliary decompression uses available at re-operation. (thenectarystpaul.com)
  • e a Tofsims system (IonTOF) with build-in Scanning Probe stage and FIB column for true 3D-composition profiling, a completely automated micro-Hall and sheet resistance measurement tool (Capres) with additional capabilities for measurements on dedicated test structures (prior to full BEOL) and an GHz acoustic Microscope (Tepla) for probing voids in TSVs and stacked dies. (thefreedictionary.com)
  • How is Acoustic Measurement System abbreviated? (thefreedictionary.com)
  • 2 ]). These reconstructions based on histological serial sections were labor-intensive and results were in part uneven as maculae were prone to distortion or artifacts such as disruption during dehydration or embedding procedures. (biomedcentral.com)
  • Acoustic responses of vestibular afferents in a model of superior canal dehiscence. (cocites.com)