hearing loss

audibility

volume, could be an issue anywhere in auditory system, CAN be fixed with hearing aids

distortion

sensorineural, can’t understand what’s being said, no frequency resolution due to loss of outer hair cells

frequency resolution

distinction between similar frequencies

temporal resolution 

timing of events, auditory system mushes overtime, CAN’T be fixed with hearing aids 

sloping speech banana

72% correct

rising speech banana

92% correct

normal hearing loss

excellent speech intelligibility, dynamic range: 100-120 dB 

dynamic range

range of hearing sensitivity from threshold to loudest tolerable sound

sensory hearing loss

reduced speech intelligibility, distortion, dynamic range: <100 dB, tinnitus

conductive hearing loss 

excellent speech intelligibility, loss of audibility, no distortion, dynamic range is normal 

neural hearing loss

high frequency hearing loss, poor speech intelligibility, severe distortion, dynamic range increased >130 dB, vertigo, tinnitus

loud sounds don’t bother someone with an acoustic neuroma

true