Understanding the effect of age and ambient light level on visual perception
| Project/Area Number |
25285205
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Partial Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Experimental psychology
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| Research Institution | Japan Women's University |
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Principal Investigator |
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| Research Collaborator |
YOSHIMOTO Sanae
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| Project Period (FY) |
2013-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2015: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2014: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2013: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
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| Keywords | 視覚 / 運動視 / 錐体・桿体 / 薄明視 / 暗所視 / 加齢 / 環境光 / 明所視 / 錯視 / 心理物理学 / 視知覚 / 座標系 / 遡及的推測 |
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| Outline of Final Research Achievements |
The purpose of this study was to examine the effect of adapting light level and age of participants on the visual motion perception. We utilized a phenomenon called visual motion priming, in which the perceived direction of a directionally ambiguous test stimulus is influenced by the moving direction of a preceding stimulus. It was found that, under mesopic conditions, the strength of motion priming was greatly reduced under spatiotopic conditions especially for the younger participants. We also examined spatial center-surround antagonistic mechanisms in visual motion processing by measuring the minimum presentation duration for direction discrimination. Spatial suppression strength significantly correlated with age, and the older participants showed a lower spatial suppression. The overall suppression strength was reduced under mesopic vision. These results indicate that the effect of age appears at the level of visual motion processing where the cones and the rods interact.
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Report
(5 results)
Research Products
(18 results)
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[Presentation] Individual differences in visual motion perception and the associated excitatory and inhibitory neurotransmitter concentrations in the brain.2015
Author(s)
Takeuchi, T., Yoshimoto, S., Shimada, Y., Kochiyama, T., Kondo, H. M.
Organizer
OSA Fall Vision Meeting
Place of Presentation
San Jose, CA, USA
Year and Date
2015-10-16
Related Report
Int'l Joint Research
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[Presentation] 環境座標系における運動知覚2014
Author(s)
吉本早苗、内田（太田）真理子、竹内龍人
Organizer
日本基礎心理学会若手サテライトオーラルセッション
Place of Presentation
首都大学東京（東京都八王子市）
Year and Date
2014-12-05
Related Report
Invited
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