Document Detail


Adaptive control of event integration: evidence from event-related potentials.
MedLine Citation:
PMID:  17371493     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
We investigated whether it is possible to control the temporal window of attention used to rapidly integrate visual information. To study the underlying neural mechanisms, we recorded ERPs in an attentional blink task, known to elicit Lag-1 sparing. Lag-1 sparing fosters joint integration of the two targets, evidenced by increased order errors. Short versus long integration windows were induced by showing participants mostly fast or slow stimuli. Participants expecting slow speed used a longer integration window, increasing joint integration. Difference waves showed an early (200 ms post-T2) negative and a late positive modulation (390 ms) in the fast group, but not in the slow group. The modulations suggest the creation of a separate event for T2, which is not needed in the slow group, where targets were often jointly integrated. This suggests that attention can be guided by global expectations of presentation speed within tens of milliseconds.
Authors:
Elkan G Akyürek; Patricia M Riddell; Paolo Toffanin; Bernhard Hommel
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Publication Detail:
Type:  Journal Article     Date:  2007-03-19
Journal Detail:
Title:  Psychophysiology     Volume:  44     ISSN:  0048-5772     ISO Abbreviation:  Psychophysiology     Publication Date:  2007 May 
Date Detail:
Created Date:  2007-04-16     Completed Date:  2007-07-16     Revised Date:  2009-11-11    
Medline Journal Info:
Nlm Unique ID:  0142657     Medline TA:  Psychophysiology     Country:  United States    
Other Details:
Languages:  eng     Pagination:  383-91     Citation Subset:  IM    
Affiliation:
School of Psychology and Clinical Language Sciences, University of Reading, Earley Gate, Whiteknights, Reading, United Kingdom. e.g.akyurek@rdg.ac.uk
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MeSH Terms
Descriptor/Qualifier:
Adult
Attention / physiology*
Brain Mapping
Cerebral Cortex / physiology
Discrimination Learning / physiology*
Electroencephalography
Event-Related Potentials, P300 / physiology
Evoked Potentials, Visual / physiology*
Female
Humans
Male
Pattern Recognition, Visual / physiology*
Reaction Time / physiology*
Refractory Period, Psychological / physiology*
Serial Learning / physiology*
Signal Processing, Computer-Assisted

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


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