The effect of eye position on the orientation of sound lateralization.
CONCLUSIONS
The data suggest that sound lateralization sensitivity during interaural time difference (ITD) discrimination is altered by eccentric gaze and that sound lateralization shifts toward the direction of the gaze.


OBJECTIVE
Using dichotic sounds, the effect of eye position on the orientation of sound lateralization was investigated in humans.


METHODS
The subjects were studied by testing ITD discrimination under different conditions of visual fixation.


RESULTS
The amplitudes obtained during the ITD discrimination tests during eccentric fixation were significantly greater than those obtained while gazing straight ahead (p<0.05). The median line of amplitude obtained during the ITD discrimination test shifted toward the direction of the gaze.
Otake
Rika
R
Department of Otolaryngology, Tokyo Metropolitan Police Hospital, 2-10-41 Fujimi, Chiyoda-ku, Tokyo, Japan.
Saito
Yuki
Y
Suzuki
Mitsuya
M
D000328:Adult; D005133:Eye Movements / Q000502:physiology*; D005260:Female; D005403:Fixation, Ocular / Q000502:physiology*; D006801:Humans; D008297:Male; D013017:Sound Localization / Q000502:physiology*; D014796:Visual Perception