Evaluation of the Drowsiness by Pupil Fluctuation
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- NISHIYAMA Junpei
- Department of Computer Science, Chubu University College of Engineering
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- TANIDA Koji
- Honda R&D Co., Ltd. Automobile R&D Center
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- KUSUMI Masashi
- Honda R&D Co., Ltd. Automobile R&D Center
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- HIRATA Yutaka
- Department of Computer Science, Chubu University College of Engineering
Bibliographic Information
- Other Title
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- 瞳孔ゆらぎを指標とした覚醒度状態評価
- ドウコウ ユラギ オ シヒョウ ト シタ カクセイド ジョウタイ ヒョウカ
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Abstract
Prediction of drowsiness based on an objective measure is demanded in machine and vehicle operations in which human errors may cause fatal accidents. Currently we focused on the pupil of the eye which is controlled by the autonomic nervous system, and easily observable non-invasively from the outside of the body. We employed uneventful driving simulation to induce drowsiness of human subjects, and an anti-saccade task to evaluate their cognitive and motor performance. First we confirmed that pupil diameter fluctuates with large amplitude at low frequencies when the subject is aware of his/her drowsiness as reported previously. During this period, the reaction time of anti-saccade initiation was elongated and varied. We then found that prior to this fluctuation, pupil diameter decreases gradually in most subjects, and they were not aware of sleepiness during this period. We conclude that this monotonic gradual miosis can be a reliable premonitor of drowsiness.
Journal
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- Transactions of Japanese Society for Medical and Biological Engineering
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Transactions of Japanese Society for Medical and Biological Engineering 46 (2), 212-217, 2008
Japanese Society for Medical and Biological Engineering
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Details 詳細情報について
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- CRID
- 1390001205266291328
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- NII Article ID
- 130004494050
- 110006793192
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- NII Book ID
- AA11633569
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- ISSN
- 18814379
- 1347443X
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- NDL BIB ID
- 9557784
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- CiNii Articles
- KAKEN
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- Abstract License Flag
- Disallowed