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認知的作業負荷量の相違が事象関連電位に及ぼす影響
Bibliographic Information
- Other Title
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- ニンチテキ サギョウ フカリョウ ノ ソウイ ガ ジショウ カンレン デンイ ニ オヨボス エイキョウ
- The change in event related potentials with Varying Degrees of cognitive workload
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Description
認知的な作業遂行能力を向上させる目的で作業課題を導入する際,客観的な認知的負荷量を把握することは重要である.本研究では,二重課題を用いて副課題の認知的難易度を変化させ,その違いが主課題のP300成分に反映するか否かを検討した.主課題は,聴覚的Odd-ball課題とし,副課題は仮名拾い課題と書字課題としてそれぞれ認知的難易度を変化させた.主課題から得られたP300の振幅は,仮名拾い課題では難易度に伴い減衰し,潜時は延長したが,書字課題では難易度の違いにより有意差は認められなかった.これらのことから,二重課題によって注意資源の競合が生じ,仮名拾い課題では認知的負荷量の差が注意資源配分量の差として主課題のP300に反映したことが示唆された.
When occupational therapists introduce occupational tasks for the purpose of improving Cognitive occupational performance, it is important to understand the effect of cognitive loading. In this study we used two secondary tasks of differing cognitive degrees of difficulty for dual tasking and examined their influences on the P300 components of the primary task. We used Oddball task as the primary task and Kana search task and Writing task as the secondary tasks. Amplitude of P300 obtained from the primary task decreased and the latency extended with the more difficult secondary Kana search test. No significant difference was noticed with the less difficult secondary Writing test. We believe that a competition of mental resources resulted from the dual task with Kana search. We feel that degrees in cognitive loading influenced the P300 of the primary task, because of the necessity of mental resource allocation.
Journal
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- Bulletin of Nagasaki University School of Health Sciences
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Bulletin of Nagasaki University School of Health Sciences 17 (1), 25-29, 2004-07-15
長崎 : 長崎大学医学部保健学科
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Keywords
Details 詳細情報について
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- CRID
- 1050568772227746688
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- NII Article ID
- 110000950407
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- NII Book ID
- AA11595980
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- ISSN
- 09160841
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- HANDLE
- 10069/18045
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- NDL BIB ID
- 7242444
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- Text Lang
- ja
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- Article Type
- departmental bulletin paper
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- Data Source
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- IRDB
- NDL Search
- CiNii Articles
- KAKEN