Comonalities of control Mechanisms for saccade and Spatial attention
Project/Area Number |
03831008
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Research Category |
Grant-in-Aid for General Scientific Research (C)
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Allocation Type | Single-year Grants |
Research Field |
認知科学
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Research Institution | Fukushima Medical College, Department of Humanities and Social Sciences. |
Principal Investigator |
IWASAKI Syoichi Fukushima Medical Collage Department of Humanities & Social Sciences Associate Professor, 人文社会, 助教授 (90117656)
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Project Period (FY) |
1991 – 1992
|
Project Status |
Completed (Fiscal Year 1992)
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Budget Amount *help |
¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 1992: ¥300,000 (Direct Cost: ¥300,000)
Fiscal Year 1991: ¥700,000 (Direct Cost: ¥700,000)
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Keywords | Spatial Attention / Saccade / eye movement / 処理のレベル / 反応時間 / spatial atleution / ex press saccade / latency |
Research Abstract |
In the first year, research efforts were directed to the selection of an appropriate task. The results suggested that reaction times might not be a good choice, since it might be contaminated by the processes that were not related to the mechanisms and workings of spatial attention (i.e., direct facilitation or priming of response initiation and programming). Therefore, a perceptual task seemed to be a better choice. A survey of the Literature suggested that the multiple-item sequential presentation method developed by Weiselgartner and Sperling (1987) would satisfy the requirements. The methodpresented multiple items successively at the same location in short time interval. The method was considered to be suitable for the purpose of the present research, because it could avoid automatic attention capturing, allowing only for the working of controlled attention processes and did not depend on reactiontime measures. In the second year, the hypothesis that the gap effect would facilitate not only saccadic latency but also that of attention shifts was tested with this method. The results of two experiments, one with naive subjects and the other with two trained subjects, could not confirm the hypothesis. However, since Mackeben and Nakayama (1993) recently reported the gap effects for spatial attention shifts using a vernier acuity task, it was felt that the clarification of this contradiction would help reveal the mechanisms with which spatial attention facilitates our visual functions.
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Report
(3 results)
Research Products
(2 results)