著者

徳重 あつ子 阿曽 洋子 伊部 亜希 岡 みゆき 片山 恵

出版者

公益社団法人 日本生体医工学会

雑誌

生体医工学 (ISSN:1347443X)

巻号頁・発行日

vol.47, no.1, pp.15-27, 2009-02-10 (Released:2009-08-13)

参考文献数

43

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This study examined the effect of sitting positions on cerebral activation for people in bed and analyzed postural significance. The subjects were 30 healthy adults. We recorded their EEGs in α and β band and performed a subjective test in supine and sitting positions with the head of the bed elevated at 30° and 80°. First, measurements were made in the supine position for 5 minutes, and the head of the bed was then elevated. Measurement continued in the sitting position for 15 minutes at 3 stages: Stages 1, 2, and 3. Using the supine position as a baseline, we compared the supine and sitting positions. We also compared the two angles, 30° and 80°. The EEG showed a significant increase at the 80° for all measured regions and intervals, and a partially significant increase was noted at 30°. Comparing the effect of different angles confirmed the significance of 80° at Stages 1 and 2. Moreover retention time of cerebral activation at 80° is longer than that at 30°. The subjective test also confirmed a higher degree of awakening in the sitting position and in a bed at 80°. Consequently, the effect of the sitting position verified cerebral activation.