Can You Really Move in a Dream?
SCIENCE
During REM sleep your body is paralyzed — a real protective mechanism that stops you from acting out dreams. So what happens in the brain when you deliberately "move" inside a lucid dream, if the body itself never moves?
The Study
Dresler's team gave experienced lucid dreamers a pre-agreed task: once lucid, clench your dreamed fist, repeatedly, in a specific rhythm — then signal with real trackable eye movements when you start and stop. Brain imaging ran the whole time.
The dreamed clenching activated the sensorimotor cortex — the same region that activates for a real fist clench while awake. The brain didn't fully distinguish between "really doing it" and "dreaming of doing it, while lucid and deliberately directing the action."
WHY THIS MATTERS
This is part of why lucid dreaming has drawn interest for motor rehearsal and skill practice — if a dreamed, deliberate action engages the same motor circuitry as the real one, a lucid dream may function, in a limited way, like mental rehearsal does while awake. That's a plausible extension of the finding, not something this one study directly tested.
References
Dresler, M. et al. Dreamed movement elicits activation in the sensorimotor cortex. (fMRI/polysomnography combined study, Max Planck Institute of Psychiatry.)