Memory for time

The brain maintains a record of recent events including information about the time at which events were experienced. We review behavioral and neuro-physiological evidence as well as computational models to better understand memory for time. Neurophysiologically, populations of neurons that record the time of recent events have been observed in many brain regions. Time cells fire in long sequences after a triggering event demonstrating memory for the past. Populations of exponentially-decaying neurons record past events at many delays by decaying at different rates. Both kinds of representations record distant times with less temporal resolution. The work reviewed here converges on the idea that the brain maintains a representation of past events along a scale-invariant compressed timeline.Accepted manuscrip