title: Effects of aging on the precedence effect in sound localization.
abstract: The precedence effect in sound localization can be evoked by presenting identical sounds (e.g., clicks) from pairs of loudspeakers placed on opposite sides of a subject's head. With appropriate inter-loudspeaker delays, normal subjects perceive a fused image originating from the side of the leading loudspeaker. Separate tests at loudspeaker delays ranging from 0 to 8 ms were presented to groups of young and elderly subjects. At 0 ms delay, young subjects perceived the fused image to be located halfway between the loudspeakers; at progressively longer delays, the image was perceived closer to the leading loudspeaker. Significant numbers of elderly subjects exhibited discrimination difficulties with delays below 0.7 ms.
authors: Dept. Communicative Disorders and Sciences, Wichita State University, Kansas 67208.
authors: J L
authors: JL
authors: Cranford
authors: M
authors: M
authors: Boose
authors: C A
authors: CA
authors: Moore
mesh_terms: D000328:Adult; D000368:Aged; D000375:Aging / Q000502:physiology*; D003463:Cues; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011571:Psychoacoustics; D011930:Reaction Time; D013017:Sound Localization / Q000502:physiology*; D013997:Time Factors