English Speakers – Hearing Test 5
The key terms of Hearing Test 5 include, English Speakers.
How many English speakers in the world could possibly have APD?
300 million
Cochlear loss can be identified by
Sensitivity loss
recruitment
reduced frequency resolution
reduced supra-threshold speech recognition
Transduction
motion of stapes in oval window sets perilymph in scala vestib in motion
motion transferred to scala media
sets basilar membrane into motion
tect membrane moves at diff angle from basilar membrane causing cilia of the outer hair cells to be sheared
OHC enhances motion which MOTION shears the inner hair cell cilia
inner hair cells then sends impulse to auditory nerve
Active Process
Congenital hearing losses
Autosomal/recessive
usher
waardenburg
branchial-oto-renal
Autosomal hearing loss
Involving one of the 22 pairs of nonsex chromosomes
Recessive hearing loss
Gene has to be present on both chromosomes to be expressed and both parents usually have normal hearing
Frequency analysis
Vibratory characteristics of basilar membrane
amp depends on stimulus frequency
low freq peak near apex
high newar the base
Passive Process
Usher syndrome
Hearing loss
vestibular disturbances
vision loss
Waardenburg syndrome
SNHL
unusual pigment patterns
distinctive facial structure
Branchial-otorenal syndrom
Ear malformations
cysts in the neck
hearing loss
kidney malformations
Later causes of inner ear disorder
Infections
ototoxicity
noise
sudden hearing loss
meniere’s disease
temporal bone fracture
presbycusis
Scala vestibuli starts where and what fluid
Oval window
Perilymph
Choclea functions
Transduction
frequency analysis
How many English speakers in the world could possibly have APD?
300 million
Cochlear loss can be identified by
Sensitivity loss
recruitment
reduced frequency resolution
reduced supra-threshold speech recognition
Transduction
motion of stapes in oval window sets perilymph in scala vestib in motion
motion transferred to scala media
sets basilar membrane into motion
tect membrane moves at diff angle from basilar membrane causing cilia of the outer hair cells to be sheared
OHC enhances motion which MOTION shears the inner hair cell cilia
inner hair cells then sends impulse to auditory nerve
Active Process
Congenital hearing losses
Autosomal/recessive
usher
waardenburg
branchial-oto-renal
Autosomal hearing loss
Involving one of the 22 pairs of nonsex chromosomes
Recessive hearing loss
Gene has to be present on both chromosomes to be expressed and both parents usually have normal hearing
Frequency analysis
Vibratory characteristics of basilar membrane
amp depends on stimulus frequency
low freq peak near apex
high newar the base
Passive Process
Usher syndrome
Hearing loss
vestibular disturbances
vision loss
Waardenburg syndrome
SNHL
unusual pigment patterns
distinctive facial structure
Branchial-otorenal syndrom
Ear malformations
cysts in the neck
hearing loss
kidney malformations
Later causes of inner ear disorder
Infections
ototoxicity
noise
sudden hearing loss
meniere’s disease
temporal bone fracture
presbycusis
Scala vestibuli starts where and what fluid
Oval window
Perilymph
Choclea functions
Transduction
frequency analysis