Schematic Illustration: Event Sequences (IMAGE) RIKEN Caption Event sequences of past (for example, smell), current (sound), and future (decision) are represented in theta cycles in the hippocampus of the rat brain. Credit RIKEN Usage Restrictions credit RIKEN 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.