Source:http://linkedlifedata.com/resource/pubmed/id/15872107
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| Predicate | Object |
|---|---|
| rdf:type | |
| lifeskim:mentions | |
| pubmed:issue |
18
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| pubmed:dateCreated |
2005-5-5
|
| pubmed:abstractText |
Attention can be voluntarily directed to a location or automatically summoned to a location by a salient stimulus. We compared the effects of voluntary and stimulus-driven shifts of spatial attention on the blood oxygenation level-dependent signal in humans, using a method that separated preparatory activity related to the initial shift of attention from the subsequent activity caused by target presentation. Voluntary shifts produced greater preparatory activity than stimulus-driven shifts in the frontal eye field (FEF) and intraparietal sulcus, core regions of the dorsal frontoparietal attention network, demonstrating their special role in the voluntary control of attention. Stimulus-driven attentional shifts to salient color singletons recruited occipitotemporal regions, sensitive to color information and part of the dorsal network, including the FEF, suggesting a partly overlapping circuit for endogenous and exogenous orienting. The right temporoparietal junction (TPJ), a core region of the ventral frontoparietal attention network, was strongly modulated by stimulus-driven attentional shifts to behaviorally relevant stimuli, such as targets at unattended locations. However, the TPJ did not respond to salient, task-irrelevant color singletons, indicating that behavioral relevance is critical for TPJ modulation during stimulus-driven orienting. Finally, both ventral and dorsal regions were modulated during reorienting but significantly only by reorienting after voluntary shifts, suggesting the importance of a mismatch between expectation and sensory input.
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| pubmed:grant | |
| pubmed:language |
eng
|
| pubmed:journal | |
| pubmed:citationSubset |
IM
|
| pubmed:chemical | |
| pubmed:status |
MEDLINE
|
| pubmed:month |
May
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| pubmed:issn |
1529-2401
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| pubmed:author | |
| pubmed:issnType |
Electronic
|
| pubmed:day |
4
|
| pubmed:volume |
25
|
| pubmed:owner |
NLM
|
| pubmed:authorsComplete |
Y
|
| pubmed:pagination |
4593-604
|
| pubmed:dateRevised |
2007-11-14
|
| pubmed:meshHeading |
pubmed-meshheading:15872107-Adult,
pubmed-meshheading:15872107-Analysis of Variance,
pubmed-meshheading:15872107-Attention,
pubmed-meshheading:15872107-Brain Mapping,
pubmed-meshheading:15872107-Cerebral Cortex,
pubmed-meshheading:15872107-Cues,
pubmed-meshheading:15872107-Evoked Potentials,
pubmed-meshheading:15872107-Eye Movements,
pubmed-meshheading:15872107-Female,
pubmed-meshheading:15872107-Humans,
pubmed-meshheading:15872107-Image Processing, Computer-Assisted,
pubmed-meshheading:15872107-Magnetic Resonance Imaging,
pubmed-meshheading:15872107-Male,
pubmed-meshheading:15872107-Orientation,
pubmed-meshheading:15872107-Oxygen,
pubmed-meshheading:15872107-Pattern Recognition, Visual,
pubmed-meshheading:15872107-Photic Stimulation,
pubmed-meshheading:15872107-Psychomotor Performance,
pubmed-meshheading:15872107-Reaction Time,
pubmed-meshheading:15872107-Time Factors
|
| pubmed:year |
2005
|
| pubmed:articleTitle |
An event-related functional magnetic resonance imaging study of voluntary and stimulus-driven orienting of attention.
|
| pubmed:affiliation |
Department of Psychology, Washington University in St. Louis, St. Louis, Missouri 63130-4899, USA.
|
| pubmed:publicationType |
Journal Article,
Comparative Study,
Research Support, U.S. Gov't, P.H.S.,
Research Support, Non-U.S. Gov't,
Research Support, N.I.H., Extramural
|