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第一个描記人类脑电图的貝格尔(H. Berger)便观察到頻率每秒20次左右的β波显然較每秒10次左右的α波更加与思維(心算)有关。1935年有人謂心算或感觉想象等思維活动使α波阻抑,以后許多作者都认为α波(枕叶α波)阻抑显然是思維活动的指标。虽然个别作者曾观察到思維时α波未必阻抑,但α波阻抑与思維(默讀
The first H. Berger tracing the human electroencephalogram observed that beta waves at a rate of about 20 times per second are clearly more involved with thinking (mental arithmetic) than alpha waves at about 10 times per second. In 1935 some people thought that mental arithmetic or feeling of imagination and other thinking activities to inhibit the α wave, many authors later that α wave (occipital α wave) is obviously the inhibition of thinking activity indicators. Although individual authors have observed the thought of alpha waves may not be suppressed, but alpha wave suppression and thinking (silent reading