title: Effects of stimulus duration and stimulus off time on the auditory and acoustic reflex thresholds.
abstract: The effects of stimulus duration and stimulus off time on the thresholds of hearing and the acoustic reflex were investigated in 10 normal-hearing subjects and 10 subjects with sensorineural hearing loss. A 1000-Hz stimulus with on-off times of 500-500 msec and 30-30 msec was used to obtain hearing sensitivity and acoustic reflex thresholds via a tracking method. Auditory threshold was poorer for the 30-30 msec tone than the 500-500 msec stimulus in both groups. Using the different stimuli, no significant difference in acoustic reflex threshold was observed in either group. These results suggest that the addition of a short off time modifies the previously observed effects of both duration and off time on the acoustic reflex and auditory threshold.
mesh_terms: D000328:Adult; D001299:Audiometry / Q000379:methods*; D001309:Auditory Threshold / Q000502:physiology; D003638:Deafness / Q000503:physiopathology; D004432:Ear, Middle / Q000502:physiology*; D006801:Humans; D007759:Labyrinth Diseases / Q000503:physiopathology; D012018:Reflex / Q000502:physiology; D013997:Time Factors