Document Detail

Adaptive control of event integration: evidence from event-related potentials.
MedLine Citation:
PMID:  17371493     Owner:  NLM     Status:  MEDLINE    
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.
Elkan G Akyürek; Patricia M Riddell; Paolo Toffanin; Bernhard Hommel
Related Documents :
17536943 - Neuroaffective processing in criminal psychopaths: brain event-related potentials revea...
25436843 - Factors associated with neurocognitive performance in oif/oef servicemembers with postc...
21286993 - Semantic priming and retrieval from lexical memory: evidence for facilitatory and inhib...
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    
School of Psychology and Clinical Language Sciences, University of Reading, Earley Gate, Whiteknights, Reading, United Kingdom.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Attention / physiology*
Brain Mapping
Cerebral Cortex / physiology
Discrimination Learning / physiology*
Event-Related Potentials, P300 / physiology
Evoked Potentials, Visual / physiology*
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

Previous Document:  The interdependence of spatial attention and lexical access as revealed by early asymmetries in occi...
Next Document:  Effects of stimulus probability on pupillary dilation and reaction time in categorization.