The Levels of SleepAn expert on American Indians arid on insects, father of two Sons, and husband of a museum curator, Peter Farb was born in New York City in 1929.
REM sleep is always accompanied by very distinctive brain-wave patterns, a marked increase in blood flow arid in the temperature of the brain, irregular breathing, convulsive twisting of the face and fingertips, and the erection of the penis and clitoris.
Most people tend to think of going to sleep as a slow slip page into oblivion, but the onset of sleep is not gradual at all.
The first REM period begins about seventy or eighty minutes after a person has fallen asleep and usually lasts for only about ten m...
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