Document Detail

Time delays in the beta/gamma cycle operate on the level of individual neurons.
MedLine Citation:
PMID:  20571457     Owner:  NLM     Status:  MEDLINE    
Recent studies suggested that small time delays among synchronized responses can convey information about visual stimuli. We compared these delays across different types of synchronized signals: single-unit action potentials, multi-unit action potentials, and local field potentials obtained with invasive recordings from cat visual cortex and magnetoencephalographic and electroencephalographic signals recorded from the scalp of human beings. In the signals that reflected more localized sources, time delays were larger and more selective for stimulus properties than in the signals that reflected more large-scale sources. The results suggest that a cortical code for stimulus features that exploits time delays operates predominantly across individual neurons rather than across larger anatomical structures such as brain areas.
Peng Wang; Martha N Havenith; Micha Best; Christine Gruetzner; Wolf Singer; Peter Uhlhaas; Danko Nikolić
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Neuroreport     Volume:  21     ISSN:  1473-558X     ISO Abbreviation:  Neuroreport     Publication Date:  2010 Aug 
Date Detail:
Created Date:  2010-07-01     Completed Date:  2010-09-28     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9100935     Medline TA:  Neuroreport     Country:  England    
Other Details:
Languages:  eng     Pagination:  746-50     Citation Subset:  IM    
Department of Neurophysiology, Max-Planck Institute for Brain Research, Frankfurt Institute for Advanced Studies, Wolfgang Goethe University, Germany.
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MeSH Terms
Action Potentials / physiology
Beta Rhythm
Brain / physiology*
Cortical Synchronization
Neurons / physiology*

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