Regional dissociations within the hippocampus - Memory and anxiety

D. M. Bannerman, J. N.P. Rawlins, S. B. McHugh, R. M.J. Deacon, Kay Yan Benjamin Yee, T. Bast, W. N. Zhang, H. H.J. Pothuizen, J. Feldon

Research output: Journal article publicationReview articleAcademic researchpeer-review

1160 Citations (Scopus)


The amnestic effects of hippocampal lesions are well documented, leading to numerous memory-based theories of hippocampal function. It is debatable, however, whether any one of these theories can satisfactorily account for all the consequences of hippocampal damage: Hippocampal lesions also result in behavioural disinhibition and reduced anxiety. A growing number of studies now suggest that these diverse behavioural effects may be associated with different hippocampal subregions. There is evidence for at least two distinct functional domains, although recent neuroanatomical studies suggest this may be an underestimate. Selective lesion studies show that the hippocampus is functionally subdivided along the septotemporal axis into dorsal and ventral regions, each associated with a distinct set of behaviours. Dorsal hippocampus has a preferential role in certain forms of learning and memory, notably spatial learning, but ventral hippocampus may have a preferential role in brain processes associated with anxiety-related behaviours. The latter's role in emotional processing is also distinct from that of the amygdala, which is associated specifically with fear. Gray and McNaughton's theory can in principle incorporate these apparently distinct hippocampal functions, and provides a plausible unitary account for the multiple facets of hippocampal function.
Original languageEnglish
Pages (from-to)273-283
Number of pages11
JournalNeuroscience and Biobehavioral Reviews
Issue number3
Publication statusPublished - 1 May 2004
Externally publishedYes


  • Amygdala
  • Anxiety
  • Dorsal
  • Fear
  • Freezing
  • Hippocampus
  • Learning
  • Memory
  • Spatial
  • Startle
  • Ventral

ASJC Scopus subject areas

  • Neuropsychology and Physiological Psychology
  • Cognitive Neuroscience
  • Behavioral Neuroscience


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