19211885

Source:http://linkedlifedata.com/resource/pubmed/id/19211885

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Predicate	Object
rdf:type	pubmed:Citation
lifeskim:mentions	umls-concept:C0004268, umls-concept:C0086418, umls-concept:C0086526, umls-concept:C0228405, umls-concept:C1280500, umls-concept:C1428114
pubmed:issue	6
pubmed:dateCreated	2009-2-12
pubmed:abstractText	The role of subcortical visual structures such as the lateral geniculate nucleus (LGN) and the superior colliculus (SC) in the control of visual spatial attention remains poorly understood. Here, we used high-resolution functional magnetic resonance imaging to measure responses in the human LGN and SC during sustained spatial attention. Subjects covertly and continuously tracked one of two segments that rotated through the visual field, composed of either moving dots or transient colored shapes. Activity in both nuclei was generally enhanced by attention, independent of the stimulus type, with the voxels responding more sensitively to stimulus contrast (those dominated by magnocellular input) exhibiting greater attentional enhancement. The LGN contained clusters of voxels exhibiting attentional enhancement or weak suppression, whereas the SC exhibited predominantly attentional enhancement, which was significantly stronger than in the LGN. The spatial distribution of the attentional effects was unrelated to the retinotopic organization in either structure. The results demonstrate that each of the major subcortical visual pathways participates in attentional selection, and their differential magnitudes of modulation suggest distinct roles.
pubmed:grant	http://linkedlifedata.com/resource/pubmed/grant/1R01 EY017699, http://linkedlifedata.com/resource/pubmed/grant/2P50 MH62196, http://linkedlifedata.com/resource/pubmed/grant/2R01 MH64043, http://linkedlifedata.com/resource/pubmed/grant/P50 MH062196-02, http://linkedlifedata.com/resource/pubmed/grant/R01 EY017699-01A1, http://linkedlifedata.com/resource/pubmed/grant/R01 MH064043-02, http://linkedlifedata.com/resource/pubmed/grant/T32 MH065214, http://linkedlifedata.com/resource/pubmed/grant/T32 MH065214-01
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pubmed:language	eng
pubmed:journal	http://linkedlifedata.com/resource/pubmed/journal/8102140
pubmed:citationSubset	IM
pubmed:status	MEDLINE
pubmed:month	Feb
pubmed:issn	1529-2401
pubmed:author	pubmed-author:KastnerSabineS, pubmed-author:SchneiderKeith AKA
pubmed:issnType	Electronic
pubmed:day	11
pubmed:volume	29
pubmed:owner	NLM
pubmed:authorsComplete	Y
pubmed:pagination	1784-95
pubmed:dateRevised	2010-12-3
pubmed:meshHeading	pubmed-meshheading:19211885-Adult, pubmed-meshheading:19211885-Attention, pubmed-meshheading:19211885-Female, pubmed-meshheading:19211885-Geniculate Bodies, pubmed-meshheading:19211885-Humans, pubmed-meshheading:19211885-Male, pubmed-meshheading:19211885-Photic Stimulation, pubmed-meshheading:19211885-Space Perception, pubmed-meshheading:19211885-Superior Colliculi, pubmed-meshheading:19211885-Time Factors, pubmed-meshheading:19211885-Visual Fields, pubmed-meshheading:19211885-Young Adult
pubmed:year	2009
pubmed:articleTitle	Effects of sustained spatial attention in the human lateral geniculate nucleus and superior colliculus.
pubmed:affiliation	Department of Psychology, Center for the Study of Brain, Mind and Behavior, and Princeton Neuroscience Institute, Princeton University, Princeton, New Jersey 08540, USA. schneiderkei@missouri.edu
pubmed:publicationType	Journal Article, Comparative Study, Research Support, U.S. Gov't, Non-P.H.S., Research Support, N.I.H., Extramural