The time course of exogenous and endogenous control of covert attention
Studies of eye-movements and manual response have established that rapid overt selection is largely exogenously driven toward salient stimuli, whereas slower selection is largely endogenously driven to relevant objects. We use the N2pc, an event-related potential index of covert attention, to demons...
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Formato: | Texto |
Lenguaje: | English |
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Springer-Verlag
2009
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2839488/ https://www.ncbi.nlm.nih.gov/pubmed/19940982 http://dx.doi.org/10.1007/s00221-009-2094-9 |
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author | Hickey, Clayton van Zoest, Wieske Theeuwes, Jan |
author_facet | Hickey, Clayton van Zoest, Wieske Theeuwes, Jan |
author_sort | Hickey, Clayton |
collection | PubMed |
description | Studies of eye-movements and manual response have established that rapid overt selection is largely exogenously driven toward salient stimuli, whereas slower selection is largely endogenously driven to relevant objects. We use the N2pc, an event-related potential index of covert attention, to demonstrate that this time course reflects an underlying pattern in the deployment of covert attention. We find that shifts of attention that occur soon after the onset of a visual search array are directed toward salient, task-irrelevant visual stimuli and are associated with slow responses to the target. In contrast, slower shifts are target-directed and are associated with fast responses. The time course of exogenous and endogenous control provides a framework in which some inconsistent results in the capture literature might be reconciled; capture may occur when attention is rapidly deployed. |
format | Text |
id | pubmed-2839488 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2009 |
publisher | Springer-Verlag |
record_format | MEDLINE/PubMed |
spelling | pubmed-28394882010-03-26 The time course of exogenous and endogenous control of covert attention Hickey, Clayton van Zoest, Wieske Theeuwes, Jan Exp Brain Res Research Article Studies of eye-movements and manual response have established that rapid overt selection is largely exogenously driven toward salient stimuli, whereas slower selection is largely endogenously driven to relevant objects. We use the N2pc, an event-related potential index of covert attention, to demonstrate that this time course reflects an underlying pattern in the deployment of covert attention. We find that shifts of attention that occur soon after the onset of a visual search array are directed toward salient, task-irrelevant visual stimuli and are associated with slow responses to the target. In contrast, slower shifts are target-directed and are associated with fast responses. The time course of exogenous and endogenous control provides a framework in which some inconsistent results in the capture literature might be reconciled; capture may occur when attention is rapidly deployed. Springer-Verlag 2009-11-26 2010 /pmc/articles/PMC2839488/ /pubmed/19940982 http://dx.doi.org/10.1007/s00221-009-2094-9 Text en © The Author(s) 2009 https://creativecommons.org/licenses/by-nc/4.0/ This article is distributed under the terms of the Creative Commons Attribution Noncommercial License which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author(s) and source are credited. |
spellingShingle | Research Article Hickey, Clayton van Zoest, Wieske Theeuwes, Jan The time course of exogenous and endogenous control of covert attention |
title | The time course of exogenous and endogenous control of covert attention |
title_full | The time course of exogenous and endogenous control of covert attention |
title_fullStr | The time course of exogenous and endogenous control of covert attention |
title_full_unstemmed | The time course of exogenous and endogenous control of covert attention |
title_short | The time course of exogenous and endogenous control of covert attention |
title_sort | time course of exogenous and endogenous control of covert attention |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2839488/ https://www.ncbi.nlm.nih.gov/pubmed/19940982 http://dx.doi.org/10.1007/s00221-009-2094-9 |
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