An important property of sound is its variation as a function of
time.This variation of acoustic properties overtime is important in
analyzing the "meaning" of a sound.In spite of its perceptual
importance, much is still unknown of how temporal information is
analyzed and represented in the auditory system. Normal temporal
processing is important for us to be able to understand speech in
quiet and in background noise. Decline in the temporal processing
abilities specifically gap detection in noise with the age is well
documented in the literature. However, less attention has been paid
to effect of age on other temporal process and its relation to
speech perception. The present study was undertaken to document
effect of age on different temporal process in normal hearing
listeners from 17-70 years of age.Temporal processes that were
measured were modulation detection, backward masking, duration
discrimination, duration pattern and gap detection.Apart from this
speech perception in noise and speech perception with vocoded
signal was also measured. Results showed a systematic age related
decline temporal processing and speech perception abilities.
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