Critical brain characteristics to consider in developing dream and memory theories

Dreaming in sleep must depend on the activity of the brain as does cognitio n and memory in wakefulness. Yet our understanding of the physiological sub tleties of state differences may still be too primitive to guide theories a dequately in these areas. One can state nonetheless unequivocally that the brain in REM is poorly equipped to practice for eventualities of wakefulnes s through dreaming, or fur consolidating into memory the complex experience s of that state.