Five key topics have been reverberating in hippocampal‐entorhinal cortex (EC) research
over the past five decades: episodic and semantic memory, path integration (“dead …

The time when an event occurs can become part of autobiographical memories. In brain
structures that support such memories, a neural code should exist that represents when or …

The observation of place cells has suggested that the hippocampus plays a special role in
encoding spatial information. However, place cell responses are modulated by several …

Single neuron activity was recorded in the granular layer of the fascia dentata in freely
moving rats, while the animals performed a spatial “working” memory task on an eight‐arm …

Episodic memory is defined as the ability to recall events in a spatiotemporal context.
Formation of such memories is critically dependent on the hippocampal formation and its …

The dentate gyrus–CA3 circuit of the hippocampus is continuously modified by the
integration of adult-born dentate granule cells (abDGCs). All abDGCs undergo a prolonged …

Memories for events are thought to be represented in sparse, distributed neuronal
ensembles (or engrams). In this article, we review how neurons are chosen to become part …

The hippocampus has differentiated into an extensively connected recurrent stage (CA3)
followed by a feed-forward stage (CA1). We examined the function of this structural …

During slow wave sleep (SWS), traces of neuronal activity patterns from preceding behavior
can be observed in rat hippocampus and neocortex. The spontaneous reactivation of these …

The authors present a theoretical framework for understanding the roles of the hippocampus
and neocortex in learning and memory. This framework incorporates a theme found in many …