You
are likely to conclude that the sleeping person is in REM if the EEG record
reveals evidence of very small and very fast waves in a person that otherwise
appears to be asleep, and other data indicates the person's eyes are moving
back and forth but the rest of the body is still.
A distinct period of sleep in mammals and birds,
characterized by unsystematic movement of the low muscle tone throughout the body, eyes, and the propensity of the sleeper to dream vividly is called REM.
