Creativity of the Dream and Sleep State
R. Stickgold
Secrets of Creativity September 30, 2019 DOI: 10.1093/oso/9780190462321.003.0007 (opens in new tab)
Study at a glance
AI-extracted from the abstract| Characteristics | Theoretical or philosophical paper Peer reviewed |
|---|---|
| Key points | Argues that REM sleep provides a daily protected period, roughly two hours, in which brain neurochemistry and neurophysiology favor the exploration of weak associations, a process the authors contend is central to creativity and is reflected in dreams. Even without dream recall, the authors propose that dream construction can prime associative networks for later creative insight. They note that some, but not all, of these brain changes also occur during quiet rest with default mode network activation. |
Abstract
Rapid eye movement (REM) sleep is a stage of sleep that evolved in part to provide a privileged time in each day when the brain is disconnected from sensory input and freed of intentional, directed thought. The neurochemistry and neurophysiology of the brain during REM sleep is optimized for the exploration of normally ignored connections and associations within the brain’s vast repertoire of stored information. This includes changes in the activity of dorsolateral prefrontal, anterior cingulate, and medial orbital frontal cortices and the hippocampus, and reductions in norepinephrine and increases in acetylcholine in the cortex. This exploration of normally weak associations is critical to the creative process, and REM sleep can thus be considered a period of unbridled creativity. Much of this creative process is reflected in the content of dreams. Even without waking dream recall, changes within associative networks produced by the brain mechanisms of dream construction can leave these brain networks—and the individual—primed for reactivation at a later time, leading to the “discovery” of creative insights. Some, but not all, of these brain changes are also seen during periods of quiet rest with activation of the default mode network (DMN). When active, this network can likewise provide a state of enhanced creativity. Nevertheless, REM sleep and dreaming provide a protected two hours every day when creative processes run at full speed.