[Day 2484 2021-07-14]
Lesson 19-2 The stuff of dreams话说梦的本质。
If it is not a question of resting the body, then
perhaps it is the brain that needs resting?
This might be a plausible hypothesis were
it not for two factors.
First the electroencephalograph (which is
simply a device for recording the electrical
activity of the brain by attaching electrodes
to the scalp) shows that while there is a change
in the pattern of activity during sleep, there is
no evidence that the total amount
of activity is anyless. The second factor is
more interesting and more fundamental.
Some years ago an American psychiatrist
named William Dementpublished experiments
dealing with the recording of eye-movements
during sleep.