NDLI: Head direction cell firing properties and behavioural performance in 3-D space

Content Provider	PubMed Central
Author	Taube, Jeffrey S.
Abstract	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.
Related Links	http://dx.doi.org/10.1113/jphysiol.2010.194266
Ending Page	841
Page Count	7
Starting Page	835
File Format	PDF
ISSN	00223751
e-ISSN	14697793
Journal	The Journal of Physiology
Issue Number	Pt 4
Volume Number	589
Language	English
Publisher	Blackwell Science Inc
Publisher Date	2011-02-15
Access Restriction	Open
Rights Holder	Blackwell Science Inc
Subject Keyword	Physiology Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Physiology Sports Science

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Head direction cell firing properties and behavioural performance in 3-D space

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Head direction cell firing properties and behavioural performance in 3-D space

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