Auditory-visual shift in localization depending on gaze direction.
The effect of eye position on the spatial congruence of the perceived direction of auditory and visual cues was investigated, using a two-alternative forced choice method in combination with a visual fixation task. The azimuth of the sound was perceived as slightly shifted to the left of a visual reference when the gaze was directed to the left, and to the right when the gaze was to the right. The maximum magnitude of this relative auditory-visual shift was 4.7 degrees over a range of fixation angles from 45 degrees to the left to 45 degrees to the right. The observed auditory-visual shift may reflect an incomplete transformation of spatial coordinates within auditory and visual neural representations, as suggested by neurophysiological recordings in the primate midbrain.
Institut für Arbeitsphysiologie, Abt. Sinnesund Neurophysiologie, Dortmund, Germany.
J
J
Lewald
W H
WH
Ehrenstein
D000328:Adult; D001307:Auditory Perception / Q000502:physiology*; D005133:Eye Movements / Q000502:physiology*; D005260:Female; D006801:Humans; D008297:Male; D011187:Posture / Q000502:physiology*; D014796:Visual Perception / Q000502:physiology*