The Postsubiculum Is Necessary for Spatial Alternation but Not for Homing by Path Integration

David Bett, Emma R Wood, Paul A Dudchenko

Research output: Contribution to journalArticlepeer-review

Abstract / Description of output

The postsubiculum is a structure of interest because it projects to the hippocampal formation and contains head direction cells, grid cells, and border cells. The aim of the current experiment was to test whether the postsubiculum is necessary for homing by path integration. Rats were trained on a homing task on a large circular platform. After exhibiting stable homing, one group of animals (n = 6) received ibotenic acid lesions of the postsubiculum, and a second (n = 5) underwent a control surgery. After recovery, animals with postsubiculum lesions homed as accurately as the control animals. Subsequent testing on a delayed alternation ⊤ maze task showed that the lesioned animals were significantly worse than the control animals at delays of 5-, 30-, and 60-s. These findings suggest that the postsubiculum is necessary for memory and avoidance of previously visited locations but is not necessary for homing. (PsycINFO Database Record (c) 2012 APA, all rights reserved).
Original languageEnglish
Pages (from-to)237-248
Number of pages12
JournalBehavioral Neuroscience
Volume126
Issue number2
Early online date20 Feb 2012
DOIs
Publication statusPublished - 2012

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