Behavioral and Brain Sciences

Short Communication

REM sIeep = dreaming: The never-ending story

Corrado Cavallero a1
a1 Dipartimento di Psicologia, Universita' degli studi di Trieste, 34134 Trieste, Italy


It has been widely demonstrated that dreaming occurs throughout human sleep. However, we once again are facing new variants of the equation “REM sleep = Dreaming.” Nielsen proposes a model that assumes covert REM processes in NREM sleep. I argue against this possibility, because dream research has shown that REM sleep is not a necessary condition for dreaming to occur.