M10 Auditory Physiology Flashcards
collects sound; “shapes frequency components
outer ear
matches airborne acoustic signal with fluid medium of cochlea
middle ear
performs temporal and spectral analysis of ongoing acoustic signal
inner ear
onveys and further processes the singal
auditory pathway
interprets the signal
cerebral cortex
the outer ear is? (4)
- collector of sounds
- shapes frequency components of sound
- contains pinna
- contains external auditory meatus
The middle ear contains (4) structures:
tympanic membrane
ossicles
entry to the cochlea
the oval window
____ provides a major input to the proprioceptive system
vestibular mechanism
occurs because some mechanical problem in the external or middle ear
conductive hearing loss
can result from a dysfunction of the inner ear
sensorineural hearing loss
Mixed-
some combination of both conductive and sensorineural
Sensorineural-
damage to the inner ear or auditory nerve
Fluctuating-
comes and goes
Conductive-
damage to outer or middle ear, can be transitory or permanent
Causes of conductive hearing loss (4)
- middle ear infections
- perforation of the eardrum
- fixation of the ossicular chain
- otosclerosis
causes of Sensorineural hearingloss (SNHL) 4
congenital (born with)
acquired (drugs or trauma)
presbyacusis
other disease/ tinnitus
vibration circumvents the ear canal, eardrum and vibrates the middle ear bones. This is called ____
bone conduction
What are 4 contributing factors to decreased perception?
loudness background noise attention comprehension familiarity
what are 4 contributing factors to hearing loss?
noise exposure birth defect age disease ear infection accident
____ is a term used to describe what happens when your brain recognizes and interprets the sounds around you
auditory processing
CAPD
Central Auditory Processing Disorder
Central Auditory processing disorder is
rare, only diagnosed through efforts of audiologist and SLP
What are the 5 auditory processing problem areas?
- Auditory Figure-Ground Problems
- Auditory Memory Problems
- Auditory discrimination problems
- Auditory attention problems
- Auditory cohesion problems
