Document Detail

Dorsal stream associations with orthographic and phonological processing.
MedLine Citation:
PMID:  16462608     Owner:  NLM     Status:  MEDLINE    
Several studies have indicated a key role for dorsal stream processing in lexical decoding. To examine this relationship further, performance on orthographic and phonological reading tests was compared with both steady-state visual evoked potentials and a putative behavioral measure of dorsal stream processing, coherent motion detection. Frequency analysis of the visual evoked potential data showed power at the second harmonic to be largely confined to dorsal stream regions, and significantly correlated with motion detection thresholds. Regression analyses showed that orthographic processing was significantly associated with the second harmonic power. Although consistent with previous reports, there remains a question as to why the orthographic visual evoked potential power relationship did not extend to include the coherent motion detection measures.
Kristofer Kinsey; Peter C Hansen; Christopher H Chase
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  Neuroreport     Volume:  17     ISSN:  0959-4965     ISO Abbreviation:  Neuroreport     Publication Date:  2006 Feb 
Date Detail:
Created Date:  2006-02-07     Completed Date:  2006-05-09     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  9100935     Medline TA:  Neuroreport     Country:  England    
Other Details:
Languages:  eng     Pagination:  335-9     Citation Subset:  IM    
University Laboratory of Physiology, Oxford University, Oxford, Birmingham University, Birmingham, UK.
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MeSH Terms
Brain Mapping
Evoked Potentials, Visual / physiology
Motion Perception / physiology*
Pattern Recognition, Visual / physiology
Photic Stimulation / methods
Sensory Thresholds / physiology
Signal Detection, Psychological / physiology*

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