Hemispheric asymmetry in color discrimination
| Project/Area Number |
02670791
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| Research Category |
Grant-in-Aid for General Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Research Field |
Ophthalmology
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| Research Institution | Oita Medical University |
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Principal Investigator |
NAKATSUKA Kazuo Oita Medical University, Professor, 医学部, 教授 (20112378)
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| Co-Investigator(Kenkyū-buntansha) |
FURUSHIMA Masatoshi Oita Medical University, Assistant, 医学部, 助手 (20238679)
後藤 正雄 大分医科大学, 医学部, 助手 (10170466)
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| Project Period (FY) |
1990 – 1991
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| Project Status |
Completed (Fiscal Year 1991)
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| Budget Amount *help |
¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 1991: ¥200,000 (Direct Cost: ¥200,000)
Fiscal Year 1990: ¥800,000 (Direct Cost: ¥800,000)
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| Keywords | Cerebral color blindness / Laterality differences / cerebral color area / Reaction time / 大脳半球 / 劣位半球 / 色認知 / 後天性色覚異常 / 優位半球 |
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| Research Abstract |
We experienced that subjects pressed a key using the right or left hand in response to a 100msec duration LED color stimulus presented to the right or left visual field.
Ten right-handed subjects were used. All of them were healthy adults and had good visual acuity without glasses.
In Experiment I, subjects respond to both color (Red and Green) immdiately, after the stimulus. In Experiment II, the subjects's task was to press the baton as quickly as possible when they discriminated the color (Red or Green).
In Experiment I, reaction time (RT) was no differences in each combination of the visual field and the hand. In experiment II, RT in the combination of the left visual field and the left hand was the fastest and that of the right visual field and the right hand was the latest. These results indicated that a right hemisphere was superiority in discrimination to colors.
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Report
(3 results)
Research Products
(7 results)
