| 单词 | alpha rhythm |
| 释义 | > as lemmasalpha rhythm a. Designating a pattern of electrical activity in the brain characterized by regular waves having a frequency of eight to thirteen cycles per second, typically occurring in an awake but relaxed individual whose eyes are closed. Esp. in alpha rhythm, alpha wave. Cf. beta n. 2h. ΘΚΠ the world > life > the body > nervous system > cerebrospinal axis > brain > [noun] > action of alpha rhythm1935 1935 Science 11 Jan. 51/2 Dr. Berger has shown in these experiments that the alpha waves diminish in magnitude under certain types of anesthesia, during an epileptic seizure and, it may seem at first sight paradoxically, when the subject is given sensory stimulation or does a ‘mental’ problem. 1941 P. Bard Macleod's Physiol. in Mod. Med. xix. 238 The most prominent rhythm is one which ranges from 8 to 13 and averages 10 waves a second. This is sometimes called the ‘Berger rhythm’, but has more generally come to be known as the alpha rhythm. 1974 S. King Carrie (1975) 78 An electroencephalogram would have shown alpha waves that were no longer waves at all, but great, jagged spikes. 2006 G. Buzsáki Rhythms of Brain vii. 198 The occipital alpha rhythm is regarded as the archetypal cerebral rhythm. < as lemmas |
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