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.
Lewald
J
J
Institut für Arbeitsphysiologie, Abt. Sinnesund Neurophysiologie, Dortmund, Germany.
Ehrenstein
W H
WH
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*