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Auditory Physiology - Klapstein
Can you name the Auditory Physiology - Klapstein ?
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Membranous labyrinth containing endolymph.
Perception of sound in absence of external source.
Serve as a compound lever which can amplify sound waves between the tympanic membrane and the oval window of cochlea
Rinne Test: in Conductive hearing loss, _______ conduction is better than air.
Ossicle that attaches to Tympanic membrane
A disorder of the inner ear in which circulation of endolymph is impeded resulting in swelling (hydrops) of the membranous labyrinth. Vertigo, tinnitus, fullness in ear, hearing lo
Bending the stereocilia bundle toward the tallest stretches the tip link and opens a cation channel in stereocilia. K+ enters and ______ the hair cell & firing rate in CN8 increase
______ labyrinth is filled with endolymph. Low Na, High K.
_____ tones: lateral part of the gyrus in tonotopic map
Most spiral ganglion receive their input only from _____ hair cells.
Weber Test: in Conductive hearing loss, tone is louder on ______ side
Name a cause of Tinnitus.
aminoglycosides, cisplatin, aspirin, quinine
Communicate at the apical end via the helicotrema. Contain perilymph.
_____ of cochlea: narrow and stiff. more sensitive to higher frequencies.
______ deafness: impairment of sound transmission prior to cochlea. Cerumen, perforation, sclerosis of ossicles.
Contains the spiral ganglion with cell bodies of the cochlear nerve.
_____ of cochlea: wider and floppier. lower frequencies
Amplified basilar vibration that can be detected by placing a very sensitive microphone sealed in the external auditory canal.
A gelatinous mass which assists the mechanical transduction by the hair cells.
_______ labyrinth is continuous with subarachnoid space and is filled with perilymph which is similar to CSF. High Na, Low K.
______ deafness: impairment of the cochlea or auditory nerve. Exposure to loud sounds, meningitis, drugs, trauma, meniere.
Lies within the scala media and contain hair cells which transduce sound into neural signals
Muscle on the handle of the malleus. Motor innervation from CN5. Decreases sound transmission.
Muscle on the neck of stapes. Motor innervation from CN7. Decreases sound transmission.
Weber Test: in Sensorineural hearing loss, tone is ______ on normal side
_____ tones: medial part of the gyrus in tonotopic map.
Rinne Test: in Sensorineural hearing loss, air conduction is better, but hearing is _______ in affected ear.
______ membrane: divide scala vestibuli and scala media.
Ossicle that is attached to oval window of cochlea
Very slow pressure changes will dissipate through the _______ with little effect on the basilar membrane.
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