What is dreaming?
- J. Allan Hobson
What causes dreaming? Why are dreams so strange? Why are they so hard to remember? ‘What is dreaming?’ shows that the most scientifically useful way to define and measure dreaming is to focus on the formal features rather than the content — the perceptual, cognitive, and emotional qualities of dreaming, whatever the details of the individual stories and scenarios might be. Data collection is described and data reports show that selective activation of brain circuits underlying emotion and related percepts in rapid eye movement (REM) sleep is found as well as selective inactivation of brain circuits — and chemicals — underlying memory, directed thought, self-reflective awareness, and logical reasoning.