Attentional templates in visual working memory

Most theories of attention propose that we maintain attentional templates in visual working memory to control what information is selected. In the present study, we directly tested this proposal by measuring the contralateral-delay activity (CDA) of human event-related potentials during visual searc...

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Bibliographic Details
Published in:The Journal of neuroscience 2011-06, Vol.31 (25), p.9315-9322
Main Authors: Carlisle, Nancy B, Arita, Jason T, Pardo, Deborah, Woodman, Geoffrey F
Format: Article
Language:English
Subjects:
Adolescent
Adult
Attention - physiology
Evoked Potentials, Visual - physiology
Female
Humans
Male
Memory, Short-Term - physiology
Pattern Recognition, Visual - physiology
Visual Cortex - physiology
Young Adult
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Summary:Most theories of attention propose that we maintain attentional templates in visual working memory to control what information is selected. In the present study, we directly tested this proposal by measuring the contralateral-delay activity (CDA) of human event-related potentials during visual search tasks in which the target is cued on each trial. Here we show that the CDA can be used to measure the maintenance of attentional templates in visual working memory while processing complex visual scenes. In addition, this method allowed us to directly observe the shift from working memory to long-term memory representations controlling attention as learning occurred and experience accrued searching for the same target object. Our findings provide definitive support for several critical proposals made in theories of attention, learning, and automaticity.
ISSN:0270-6474
1529-2401
DOI:10.1523/JNEUROSCI.1097-11.2011