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Topic: Relaxation summons CH (Read 384 times) |
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notseinfeld
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Relaxation summons CH
« on: Apr 9th, 2002, 12:36am » |
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or so it would seem. There's a thread running on General which should probably be over here as it's really something that we can all control, to one degree or another. Relaxation is a general term for what's really happening: Levels of brain waves. It is my personal opinion that in the end of studies on our condition, after all is known about the why and how, the following will be somewhere in the mix... Many hundreds of scientists have spent a lot of time studying these basic brain waves of the EEG, so there is a lot of basic knowledge about what Alpha is and what makes it appear and disappear in our brains. Yes, Alpha appears and disappears. It is not always present. For example, in deep sleep there is no Alpha, and if someone is very highly aroused as in fear or anger, again there is virtually no Alpha. Delta is seen only in the deepest stages of sleep (Stages 3 and 4). Theta is seen in light sleep and drowsiness (sleep stages 1 and 2). Alpha is seen in wakefulness where there is a relaxed and effortless alertness. Beta is seen in highly stressful situations, and where there is difficult mental concentration and focus. Delta waves are the slowest oscillating waves (0-4 cycles per second). Theta waves oscillate somewhat faster (4-7 cycles per second). Alpha waves oscillate 8-13 times per second. Beta waves oscillate still faster (13-40 cycles per second). There are many other kinds of electrical activity in the brain, especially the short-lived evoked potentials that occur when the brain responds to sensory input (like a sound, or a touch, or a flash of light). However, the four basic EEG waves of Delta, Theta, Alpha, and Beta constitute the standard lineup of EEG activity.
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