Document Detail

A real head turner: horizontal and vertical head directions are multichannel coded.
MedLine Citation:
PMID:  21873615     Owner:  NLM     Status:  MEDLINE    
Head direction is a salient cue to the focus of other people's attention. Electrophysiology in macaques has shown head-selective cells in the superior temporal sulcus that are mostly tuned to different directions (up, down, left, right, front, back, etc.). However, there has been no systematic investigation into the visual representation of head direction in both the horizontal (left-right) and vertical (up-down) planes in humans. We addressed whether the coding of head direction is best accounted for by a multichannel system, with distinct pools of cells (or channels) tuned to different head views (i.e., left, right, direct, up, and down), or an opponent-coding system with two broadly tuned pools of cells responding to two extremes (i.e., left-right and up-down) and "direct" represented as the equilibrium state in the system. In a series of four experiments, we carried out two adaptation procedures for which multichannel and opponent coding predict distinct outcomes. The results support multichannel coding of head direction in both the vertical and horizontal axes.
Rebecca P Lawson; Colin W G Clifford; Andrew J Calder
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2011-08-26
Journal Detail:
Title:  Journal of vision     Volume:  11     ISSN:  1534-7362     ISO Abbreviation:  J Vis     Publication Date:  2011  
Date Detail:
Created Date:  2011-08-29     Completed Date:  2012-01-05     Revised Date:  2014-02-20    
Medline Journal Info:
Nlm Unique ID:  101147197     Medline TA:  J Vis     Country:  United States    
Other Details:
Languages:  eng     Pagination:  -     Citation Subset:  IM    
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MeSH Terms
Adaptation, Physiological / physiology*
Attention / physiology*
Figural Aftereffect / physiology*
Head Movements / physiology*
Orientation / physiology*
Pattern Recognition, Visual / physiology
Photic Stimulation / methods
Psychophysics / methods
Young Adult
Grant Support
MC_U105579214//Medical Research Council

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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