Memory deficit induced by overload
| Project/Area Number |
23700315
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Cognitive science
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| Research Institution | The University of Tokyo (2012-2013)
Osaka University (2011) |
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Principal Investigator |
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| Project Period (FY) |
2011 – 2013
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2013: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2012: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2011: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
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| Keywords | 記憶不全 / 視覚的短期記憶 / 視覚認知 / 物体認識 / 認知神経科学 / 個人差 |
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| Research Abstract |
We investigated visual working memory (VWM) deficit induced by overload, and found wide variability in VWM capacity across memory set sizes, age, and individuals. A marked decrease in the number of objects held in VWM was observed in both younger and older adults with low memory capacity, but not among high-capacity individuals, when set size went well beyond the limits of VWM capacity. In addition, this deficit was alleviated among low-capacity younger adults, but not among low-capacity older adults, by increasing VWM encoding time. Thus, low-capacity individuals are likely to show decreases in VWM capacity induced by overload, and aging exacerbates this deficit such that it cannot be recovered by simply increasing encoding time. Our findings challenge the prevailing assumption that VWM capacity is fixed and stable, encouraging a revision to the strict view that VWM capacity is constrained by a fixed number of distinct slots in which high-resolution object representations are stored.
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Report
(4 results)
Research Products
(40 results)
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[Journal Article] Individual differences in autistic traits predict the perception of direct gaze for males, but not for females.2014
Author(s)
Matsuyoshi, D., Kuraguchi, K., Tanaka, Y., Uchida, S., Ashida, H., & Watanabe, K.
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Journal Title
Molecular Autism
Volume: 5
Issue: 1
Pages: 12-12
DOI
Related Report
Peer Reviewed
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[Journal Article] Differential roles for parietal and occipital cortices in visual working memory.2012
Author(s)
Matsuyoshi, D., Ikeda, T., Sawamoto, N., Kakigi, R., Fukuyama, H., & Osaka, N.
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Journal Title
PLoS ONE
Volume: 7
Issue: 6
Pages: e38623-e38623
DOI
Related Report
Peer Reviewed
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[Presentation] Implied gaze direction in Japanese Ukiyoe print : An event related fMRI study2012
Author(s)
Osaka, N., Matsuyoshi, D., Ikeda, T., Osaka, M.
Organizer
European Conference on Visual Perception 2012
Place of Presentation
Conference Centre of the Carlos V Hotel, Alghero, Sardinia, Italy
Related Report
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