Hippocampal Oscillations (IMAGE) Max-Planck-Gesellschaft Caption This shows oscillations in the hippocampus: neural interactions during non-REM sleep and periods of silence. Credit MPI for Biological Cybernetics Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.