We examined the time course of apparent motion and apparent displacement of a visual target, and also the horizontal deviation of apparent straight-ahead related to left-posterior neck-muscle vibration. In Experiment 1, eight observers verbally judged the apparent motion and displacement of a visual target for 60 s from prior to the vibration to after its offset. We found that rightward apparent motion was an almost identical in magnitude during the vibration and disappeared within 20 s after the vibration offset. In contrast, rightward apparent displacement gradually increased during the vibration, and was sustained over 40 s after the vibration offset. In Experiment 2, five observers manually pointed to the position of a visual point in the median plane; the mean pointed position in the vibration condition was found to deviate maximally 3 degrees to the right of the mean pointed position in the control condition. In Experiment 3, the same observers closed their eyes and pointed to the apparent straight-ahead; the mean pointed positions did not differ between the vibration and control conditions.
[The effect of posterior-neck-muscle vibration on apparent straight-ahead and visual localization of targets] Publishing Authors By Initials
[The effect of posterior-neck-muscle vibration on apparent straight-ahead and visual localization of targets] Journal Published:
PUBLICATION TYPE: Journal Article
Journal: Shinrigaku kenkyu : The Japanese journal of psycho
VOLUME: 78
Page Numbers: 381-9
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ISSN: 0021-5236
DAY: 21
MONTH: Oct
YEAR: 2007
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LANGUAGE: jpn
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AFFILIATION: Department of Psychology, Faculty of Letters, Kobe University, Japan. konitaku@lit.kobe-u.ac.jp
Country: Japan
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MEDLINETA: Shinrigaku Kenkyu
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