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 The frequency of the electroencephalogram (EEG) during sleep is low, and that during calculation is high.  Thus, the pattern of EEG, especially the frequency is a subjective measure of the consciousness level.<br>   
 The frequency of the electroencephalogram (EEG) during sleep is low, and that during calculation is high.  Thus the pattern of EEG, and in particular the frequency, is a subjective measure of the consciousness level.<br>   
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Naturally, the sleep depth is not constant, but is elevated and lowered to a different stage periodically.
Naturally, sleep frequency is not constant, rather it is periodically higher and lower according to the different sleep stages.


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2012年9月20日 (木) 11:16時点における版

00196en.jpg

 The frequency of the electroencephalogram (EEG) during sleep is low, and that during calculation is high. Thus the pattern of EEG, and in particular the frequency, is a subjective measure of the consciousness level.

Naturally, sleep frequency is not constant, rather it is periodically higher and lower according to the different sleep stages.

Challenge Quiz

1.

Delta wave is seen during deep sleep. light sleep. rest, eyes-closed and awake. psycho-activity such as calculation .

2.

Theta wave is seen during deep sleep.light sleep. rest, eyes-closed and awake. psycho-activity such as calculation .

3.

Alpha wave is seen during deep sleep. light sleep.rest, eyes-closed and awake. psycho-activity such as calculation .

4.

Alpha wave is seen during eyes-opened.eyes-closed .

5.

Beta wave is seen during deep sleep. light sleep. rest, eyes-closed and awake.psycho-activity such as calculation .

6.

The delta. theta. alpha. beta wave is seen during deep sleep.

7.

The delta.theta. alpha. beta wave is seen during light sleep.

8.

The delta. theta.alpha. beta wave is seen during rest, eyes-closed and awake.

9.

The delta. theta. alpha.beta wave is seen during psycho-activity eg calculation.

10.

The frequency of the delta wave is about 0.5-3. 4-7. 8-13. 13-18 Hz.

11.

The frequency of the theta wave is about 0.5-3.4-7. 8-13. 13-18 Hz.

12.

The frequency of the alpha wave is about 0.5-3. 4-7.8-13. 13-18 Hz.

13.

The frequency of the beta wave is about 0.5-3. 4-7. 8-13.13-18 Hz.

14.

The frequency of the delta. theta. alpha. beta wave is about 0.5-3 Hz.

15.

The frequency of the delta.theta. alpha. beta wave is about 4-7 Hz.

16.

The frequency of the delta. theta.alpha. beta wave is about 8-13 Hz.

17.

The frequency of the delta. theta. alpha.beta wave is about 13-18Hz.