| Red diffuse light suppresses the accelerated perception of fear. | |
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MedLine Citation:
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PMID: 20489219 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Prioritization of affective events may occur via two parallel pathways originating from the retina-a parvocellular (P) pathway projecting to ventral-stream structures responsible for object recognition or a faster and phylogenetically older magnocellular (M) pathway projecting to dorsal-stream structures responsible for localization and action. It has previously been demonstrated that retinal exposure to red diffuse light suppresses M-cell neural activity. We tested whether the fast propagation along the dorsal-action pathway drives an accelerated conduction of fear-based content. Using a visual prior-entry procedure, we assessed accelerated stimulus perception while either suppressing the M pathway with red diffuse light or leaving it unaffected with green diffuse light. We show that the encoding of fearful faces is accelerated, but not when M-channel activity is suppressed, revealing a dissociation that implicates a privileged neural link between emotion and action that begins at the retina. |
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Authors:
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Greg L West; Adam K Anderson; Jeffrey S Bedwell; Jay Pratt |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2010-05-20 |
Journal Detail:
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Title: Psychological science Volume: 21 ISSN: 1467-9280 ISO Abbreviation: Psychol Sci Publication Date: 2010 Jul |
Date Detail:
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Created Date: 2010-07-09 Completed Date: 2010-11-02 Revised Date: 2011-05-20 |
Medline Journal Info:
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Nlm Unique ID: 9007542 Medline TA: Psychol Sci Country: United States |
Other Details:
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Languages: eng Pagination: 992-9 Citation Subset: IM |
Affiliation:
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Department of Psychology, University of Toronto, 100 St. George St., Toronto, Ontario, Canada M5S 3G3. greg.west@utoronto.ca |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Color Facial Expression Fear / physiology*, psychology* Humans Light Photic Stimulation / methods* Students / psychology Visual Perception / physiology* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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