Human Visual and Auditory Information. Body Sway and Motion in Depth while Observing a Stimulus with Changing Disparity and Changing Size.

Uwa, Nobuaki; Kanatsugu, Yasuaki

doi:10.3169/itej.53.1300

Cited by 2 publications

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“…In summary, the result of this experiment suggests that vertical retinal disparity is not used to control head position in response to an oscillating VSR. This result is consistent with those of previous studies showing that the VSR did not affect the perception of visual direction [ 6 , 7 ], but differs from previous studies showing binocular disparity to have an effect on action [ 12 , 13 , 15 ].…”

Section: Resultssupporting

confidence: 92%

“…The visual control of action has been proposed as distinct from visual perception [ 11 ]. In the field of binocular disparity processing, Uwa et al [ 12 , 13 ] presented experimental results that are consistent with this view. They presented to subjects a stimulus simulating a front parallel wall oscillating backward and forward.…”

Section: Introductionmentioning

confidence: 62%

“…Several previous studies report that binocular disparity affects body control, even though the disparity does not produce a perception of depth or direction [ 12 , 13 , 15 ]. In this study, we investigated whether changes in the VSR could induce passive head movement, even though the VSR does not produce a perception of the spatial position of an object.…”

Section: Discussionmentioning

confidence: 99%

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Does Changing Vertical Disparity Induce Horizontal Head Movement?

Maekawa

2015

PLoS ONE

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Theoretically, one can estimate the direction of an object that is relative to the head using vertical disparity if the distance from the head to the object is known. However, several reports describe vertical disparity as having little or no effect on the perception of visual direction. It has been suggested, however, that the visual processes involved in action are different from those involved in perception, and the effect of visual disparity on action has not been investigated in previous studies. This study investigated the influence of vertical disparity on the stability of head direction as a motor response to visual information. We presented a stimulus consisting of horizontal lines with vertical size-disparity oscillation, and examined whether the stimulus affected the subject’s head movement. The results showed that the head movement in the condition of vertical size-disparity oscillation was not significantly different from that in the condition of no disparity oscillation. Our results suggest that, despite theoretical validity, vertical disparity is not used for controlling head movement.

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Section: Resultssupporting

confidence: 92%

Section: Introductionmentioning

confidence: 62%

Section: Discussionmentioning

confidence: 99%

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Does Changing Vertical Disparity Induce Horizontal Head Movement?

Maekawa

2015

PLoS ONE

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Influence of the Body Sway in Standing of the Change of Visual Information; Fluctuation by View and Saccade.

Morioka

2002

J Phys Ther Sci

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The present study was designed to investigate the influence on body sway in standing of changes in visual information by view and saccade stimulation. Subjects were seven healthy adults. In Experiment 1, participants maintained standing with legs together on a center of foot pressure platform with 1) central vision, and 2) periphery vision under eyes open conditions for thirty seconds. The central vision value was significantly decreased compared to the periphery vision. This result implies as the influence of the change of visual information by saccadic eye movement. In Experiment 2, participants maintained standing with legs together and tandem on a center of foot pressure platform with 1) natural view, and 2) saccade stare under eyes open conditions for ten seconds. There was no significant difference between natural view and saccade stare under either condition. The cause of the increased sway was not the influence of the change of vision by saccadic eye movement, which suggests a decrease in the relative quality of information of objects in periphery vision.

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Human Visual and Auditory Information. Body Sway and Motion in Depth while Observing a Stimulus with Changing Disparity and Changing Size.

Cited by 2 publications

References 0 publications

Does Changing Vertical Disparity Induce Horizontal Head Movement?

Does Changing Vertical Disparity Induce Horizontal Head Movement?

Influence of the Body Sway in Standing of the Change of Visual Information; Fluctuation by View and Saccade.

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