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Conceptual processing during the conscious resting state. A functional MRI study (1999)
| Venue: | J. Cogn. Neurosci |
| Citations: | 115 - 5 self |
BibTeX
@ARTICLE{Binder99conceptualprocessing,
author = {J. R. Binder and J. A. Frost and T. A. Hammeke and P. S. F. Bellgowan and S. M. Rao and R. W. Cox},
title = {Conceptual processing during the conscious resting state. A functional MRI study},
journal = {J. Cogn. Neurosci},
year = {1999},
volume = {11},
pages = {80--95}
}
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Abstract
n Localized, task-induced decreases in cerebral blood �ow are a frequent �nding in functional brain imaging research but remain poorly understood. One account of these phenomena postulates processes ongoing during conscious, resting states that are interrupted or inhibited by task performance. Psychological evidence suggests that conscious humans are engaged almost continuously in adaptive processes involving semantic knowledge retrieval, representation in awareness, and directed manipulation of represented knowledge for organization, problem-solving, and planning. If interruption of such “conceptual” processes accounts for task-induced deactivation, tasks that also engage these conceptual processes should not cause deactivation. Furthermore, comparisons between conceptual and nonconceptual tasks should show activation during conceptual tasks of the same brain areas that are “deactivated ” relative to rest.
Keyphrases
conceptual processing functional mri study task performance frequent nding conceptual process psychological evidence task-induced deactivation brain area task-induced decrease semantic knowledge retrieval conscious human functional brain imaging research conceptual process account nonconceptual task cerebral blood ow conceptual task adaptive process
