Activation of visual cortex in REM sleep measured by 24‐channel NIRS imaging

Psychiatry and Clinical Neurosciences - Tập 55 Số 3 - Trang 187-188 - 2001
Mariko Igawa1, Yoshikata Atsumi2, Kazumi Takahashi3,4, Shinichi Shiotsuka1, Hideto Hirasawa1, Ryusei Yamamoto5, Atsushi Maki6, Yuichi Yamashita6, Hideaki Koizumi6
1Tokyo Metropolitan Geriatric Hospital, Tokyo,
2The National Institute of Special Education, Yokosuka,
3Tokyo Medical and Dental University, Tokyo
4Tokyo Metropolitan Matsuzawa Hospital, Tokyo,
5Yamamoto Mental Hospital, Oita and
6Central Research Laboratory, Hitachi Ltd, Tokyo, Japan

Tóm tắt

AbstractTo visualize dreaming brain functions we studied hemodynamic changes in the visual cortex during the transition from non‐rapid eye movement (NREM) to rapid eye movement (REM) sleep, using a 24‐channel Near‐Infrared Spectroscopy (NIRS) imaging method. Results were compared to the activation in visual cortex by visual stimulation during wakefulness. Subjects were four healthy males between 25 and 49 years of age. Five all‐night polysomnographic and NIRS recordings were made. Increases in the oxygenated hemoglobin concentration in visual cortex were observed from nine of 14 REM periods. The activated areas were broader during REM sleep than during visual stimulation. These findings suggest that activation of visual cortex in REM sleep might represent dream‐related brain activity.

Từ khóa


Tài liệu tham khảo

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Thông tin
Thông tin xuất bản

Psychiatry and Clinical Neurosciences

Tập 55 Số 3

187-188

Thông tin tác giả