Phenomenological Study of Paradoxical Phase and Reverse Paradoxical Phase of Sleep.

There is, as is well known, a peculiar phase of sleep which is known by different names; paradoxical phase (p. p) (JOUVET 1960), activated sleep (DEMENT 1958), early morning sleep (GIBBS and GIBBS 1950), recently REMP (KLEITMAN and DEMENT 1957) and so on. The major features of this stage are: LVFA (low voltage fast activity) or waking pattern in EEG, behavioral deep sleep with high sensory threshold, the appearing after a period of HVSA (high voltage slow activity), the presence of REMs (rapid eye movement), and many other changes in different