The effects of perceived motion on sound-source lateralization.
Lateralization of dichotic click pairs differing in time of onset was studied under conditions of angular acceleration, optokinetic stimulation, and gaze fixation. Data obtained from 20 subjects with normal hearing indicate poorer left-right judgment performance for small time differences, as well as shifts in subjective simultaneity, for all experimental conditions relative to control conditions. In addition, response times increased for the experimental conditions. The results suggest that real or apparent motion may affect an individual's ability to process one of the major cues for sound-source localization--binaural time difference--under conditions similar to those encountered in vehicular motion.
Cullen
J K
JK
Louisiana State University, Baton Rouge 70803-2606.
Collins
M J
MJ
Dobie
T G
TG
Rappold
P W
PW
D000054:Acceleration; D005260:Female; D006801:Humans; D008297:Male; D009039:Motion Perception; D009041:Motion Sickness; D012984:Software; D013017:Sound Localization