Differences in brain shape between a present-day human (left, in blue) and a Neanderthal from La Chapelle-aux-Saints (right, in red). Source: Max Planck Institute for Evolutionary Anthropology/Simon ...

These findings provide some evidence that reduced slow wave sleep (SWS) and rapid eye movement sleep (REM) may contribute to brain atrophy, thereby increasing the risk of Alzheimer disease (AD).

There is a deeper side to the brain which weaves your memories, goals, beliefs and emotions into a continuous sense of self.

When compared with fixation, both smooth pursuit (upper left) and saccadic (lower left) eye movements showed similar patterns of brain activation (red) and deactivation (blue). In contrast, a direct ...