| Project/Area Number |
62450014
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| Research Category |
Grant-in-Aid for General Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Psychology
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| Research Institution | Chiba University |
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Principal Investigator |
GORYO Ken Chiba University, 文学部, 教授 (70008960)
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| Co-Investigator(Kenkyū-buntansha) |
EGUSA Hiroyuki Chiba University, 文学部, 助手 (90168774)
箱田 裕司 九州大学, 教養部, 助教授 (50117214)
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| Project Period (FY) |
1987 – 1988
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| Project Status |
Completed (Fiscal Year 1988)
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| Budget Amount *help |
¥3,700,000 (Direct Cost: ¥3,700,000)
Fiscal Year 1988: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1987: ¥3,200,000 (Direct Cost: ¥3,200,000)
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| Keywords | VISUAL INTEGRATION / EYE MOVEMENTS / SACCADIC MOVEMENT / CONSTANCY OF VISUAL DIRECTION / 運動視 / 語の認知 |
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| Research Abstract |
It is known that we move our eyes about three or four times per second. From the fact of saccadic suppression, it can be said we are getting 3 or 4 still pictures of somewhat different aspeccts of the outer world. The fact that we perceive stable world even in such a dynamic situation tells that our cognitive system somehow integrate visual information across saccades. Our working hypothesis is this: There is a visual buffer in which incoming visual inputs are integrated to construct a stable visual world being aided by our knowledge of the world.
A set of equipments was prepared to present successive visual stimuli on a computer display and record eye positions simultaneously.
In a pilot study, a horizontal line segment a was presented to the left of a fixation point for a short duration. After a saccade which moved eyes to another fixation point which located at the left of the former segment a, a vertical line segment b appeared at the same area where a was located. Observer's task was to estimate numerically at which point on a the second segment b appeared crossed. It was found the estimation was based on physical instead of retinotopic positions of the segmen ts in a light room condition. The effect of surrounding visual context must be examined.
A related experiment revealed that fixation on one of the two objects moving relatively to each other enhanced perceiving of movement of the nonfixated object.
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