The hippocampal learning-behavior translation and the functional significance of hippocampal dysfunction in schizophrenia

Curr Opin Neurobiol. 2011 Jun;21(3):492-501. doi: 10.1016/j.conb.2011.01.003. Epub 2011 Feb 15.

Abstract

How is hippocampal learning, including place learning, translated into behavior? The hippocampus integrates, along its septotemporal axis, substrates of rapid place learning, including entorhinal-hippocampal connectivity, with functional connectivity to subcortical sites and prefrontal cortex, which play central roles in behavioral-control functions, including sensorimotor, emotional, motivational, attentional, and executive functions. I present recent evidence that such integration, for which the intermediate hippocampus is a key neuroanatomical substrate, enables translation of rapid place learning into adaptive behavior. What are the clinical implications of the hippocampal learning-behavior translation? Focusing on hippocampal overactivity, which has emerged as a central feature of schizophrenia pathophysiology, I highlight how, due to functional connectivity enabling the learning-behavior translation, hippocampal dysfunction may cause not only memory deficits, but also neural-network disruptions underlying psychosis and attentional and executive deficits.

Publication types

  • Research Support, Non-U.S. Gov't
  • Review

MeSH terms

  • Animals
  • Behavior / physiology*
  • Disease Models, Animal
  • Hippocampus / physiology
  • Hippocampus / physiopathology*
  • Humans
  • Learning / physiology*
  • Neural Pathways / physiopathology
  • Schizophrenia / complications*
  • Schizophrenia / pathology*