| Head direction cell firing properties and behavioural performance in 3-D space. | |
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MedLine Citation:
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PMID: 20855436 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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Previous studies have identified a population of neurons in the rat brain that discharge as a function of the animal's directional heading in the horizontal plane, independent of their location and on-going behaviour. Most studies on head direction (HD) cells have explored how they respond in two-dimensional environments within the horizontal plane. Many animals, however, live and locomote in a three-dimensional world. This paper reviews how HD cells respond when the animal locomotes on a vertical surface or inverted on a ceiling. We found that HD cells fire in a normal, direction-dependent manner when the rat is in the vertical plane, but not when the animal is inverted. Recent behavioural studies reported that rats are capable of accurately performing a navigational task when inverted, but only when the task was simple and started from not more than one or two entry points. Probe trials found that they did not have a flexible, map-like representation of space when inverted. The loss of the directional signal when the animal is in an inverted orientation may account for the absence of the map-like representation. Taken together, these findings indicate that a normal otolith signal contributes an important role to HD cell discharge. |
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Authors:
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Jeffrey S Taube |
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Publication Detail:
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Type: Journal Article Date: 2010-09-20 |
Journal Detail:
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Title: The Journal of physiology Volume: 589 ISSN: 1469-7793 ISO Abbreviation: J. Physiol. (Lond.) Publication Date: 2011 Feb |
Date Detail:
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Created Date: 2011-04-13 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0266262 Medline TA: J Physiol Country: England |
Other Details:
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Languages: eng Pagination: 835-41 Citation Subset: IM |
Affiliation:
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Department of Psychological and Brain Sciences, Dartmouth College, Hanover, New Hampshire, USA. jeffrey.taube@dartmouth.edu. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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