| Project/Area Number |
24650058
|
|---|
| Research Category |
Grant-in-Aid for Challenging Exploratory Research
|
| Allocation Type | Multi-year Fund |
|---|
| Research Field |
Media informatics/Database
|
|---|
| Research Institution | Japan Women's University |
|---|
Principal Investigator |
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
OKAJIMA Katsunori 横浜国立大学, 環境情報研究科(研究院), 准教授 (60377108)
|
|---|
| Research Collaborator |
YOSHIMOTO Sanae
|
|---|
| Project Period (FY) |
2012-04-01 – 2015-03-31
|
| Project Status |
Completed (Fiscal Year 2014)
|
| Budget Amount *help |
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2014: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2013: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2012: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
|
|---|
| Keywords | 視覚 / 運動視 / 薄明視 / 明所視 / 暗所視 / 錯視 / 視知覚 / 運動統合 / 錐体 / 桿体 / 心理物理学 |
|---|
| Outline of Final Research Achievements |
In natural environment, ambient light levels change between day and night by a factor of a hundred billion. We empirically know that some action-related visual motion tasks are not well conducted under mesopic vision, in which both cones and rods operate. The purpose of this study was to examine the cause of this degradation of motion perception and its compensation. 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 priming stimulus. The priming and test stimulus were spatially separated. Based on the psychophysical experiments, we found that different spatiotemporal properties of cones and rods at mesopic levels may disturb the spatiotemporal integration of visual stimuli, which leads to the disappearance of visual motion priming during mesopic vision. The processing delay of rod pathways during mesopic vision should be compensated to recover motion priming.
|
