書誌事項
- タイトル別名
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- Assessment of Mental Workload Using Event-Related Potentials
- ジショウ カンレン デンイ ニ ヨル メンタル ワークロード ノ ヒョウカ
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説明
In this study, two different “event-related brain potentials (ERPs)” were examined to assess mental workload. Eye-fixation-related potentials (EFRPs) associated with the occurrence of fixation pause can be obtained from averaging electroencephalograms (EEGs) at the offset of saccades. An EFRP is a kind of event-related brain potential (ERP), which has a relationship with visual attention and the physical properties of visual stimulus. Auditory P300 is the ERP elicited from probe stimuli in a secondary task. The amplitude of a late positive wave (P300) is inversely proportioned to the amount of perceptual-central processing resources allocated to a primary task. In this experiment, the lambda responses of EFRPs and auditory P300 (irrelevant probe technique) were examined concurrently with multiple tracking tasks to compare the effects of tasks of different difficulties. Eighteen participants were assigned six different types of tracking task, each for 5 min. The workload under each tracking condition was different in the task quality (the difficulty of perceptual-motor and/or perceptual-central levels). As a result, the peak amplitude of lambda responses decreased with the level of perceptual-motor workload, while the peak amplitude of P300 didn't decrease with the level of both workloads. The results suggested that the brain physiological indexes should be used in a usability testing with due consideration of reaction characteristics and the limits of measuring technique.
収録刊行物
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- 人間中心設計
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人間中心設計 5 (1), 29-37, 2009-07-01
特定非営利活動法人 人間中心設計推進機構
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詳細情報 詳細情報について
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- CRID
- 1390570309681097088
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- NII論文ID
- 130008068162
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- NII書誌ID
- AA12895414
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- ISSN
- 24350605
- 18829635
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- NDL書誌ID
- 10717200
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用可
