and answers
sensorineural HL ✔✔inner ear/cochlea, permanant and progressive, causes:
genetic, issue in inner ear, nerve damage
mixed HL ✔✔loss caused by issue in both ME and OE
impaired auditory system ✔✔will have reduced function in perception of
intensity, differentiation of frequency, and/or analysis of temporal components of
incoming sound
impairments ✔✔produced primarily by loss of receptor cells in the cochlea and/or
reduction in number of neurons in the auditory nerve and are permanent
residual hearing ✔✔any useable hearing function that remains
dynamic range ✔✔the range of amplitudes that can be heard and discriminated;
when applied to an individual auditory nerve fiber, the range of amplitudes over
which the firing rate of the fiber changes
recruitment ✔✔abnormal change in loudness
, transducer ✔✔converts one form of energy into another
electret condensor microphone ✔✔microphone most used in modern HA
omnidirectional microphone ✔✔equally sensitive to sounds coming from all
directions
directional microphone ✔✔allow varying sensitivity to sounds coming from
different directions
telecoil ✔✔small coil of wire that picks up electromagnetic signals
direct audio input ✔✔bypasses the microphone
receiver ✔✔converts an electrical signal to an acoustic signal to be received by
the ear
BTE ✔✔best choice of HA for pediatrics
earmolds ✔✔good ____ will prevent acoustic feedback, ensure user comfort, give
patient better results with HA