睡眠中の注意(見張り番機構)と事象関連電位(ツールとしての事象関連電位,フォーラム)

概要

論文の詳細を見る
After the onset of light sleep (stage 2 sleep), behavioral response rapidly decrease and worse. Because of this, many researches addressed the question of whether it is possible to process information presented during sleep. By using the ERP, it is revealed that the night watching system of the brain could process simple perception and discrimination as well as more complex cognitive activity and contribute to determining whether interrupting sleep process or ignoring environmental change and to keep continue to sleep. During stage 1 sleep and REM sleep, experiences of hypnagogic imaging or dreaming diminished the ERP amplitude to the external stimulus. These decreases are interpreted as the diminution of the allocation of attention to the external stimuli. For the protection of the sleeping against the meaningless environmental changes, the night-watching system has to work without disturbing the sleep process. Under these restricted conditions, the activities of scanning function during sleep should be masked as an unconscious process. It is hypothesized that scanning of the environment is performed by a different system in the sleep state than in the awake state and that during drowsiness (stage 1 sleep) a gradual switch between these two systems takes place.
日本基礎心理学会の論文
2000-09-30