Cognitive Control Network Contributions to Memory-Guided Visual Attention.

Autor:	Rosen ML; Department of Psychological and Brain Sciences., Stern CE; Department of Psychological and Brain Sciences.; Center for Memory and Brain.; Graduate Program for Neuroscience, Boston University, Boston, MA 02215, USA., Michalka SW; Graduate Program for Neuroscience, Boston University, Boston, MA 02215, USA., Devaney KJ; Department of Psychological and Brain Sciences., Somers DC; Department of Psychological and Brain Sciences.; Center for Memory and Brain.; Graduate Program for Neuroscience, Boston University, Boston, MA 02215, USA.
Jazyk:	angličtina
Zdroj:	Cerebral cortex (New York, N.Y. : 1991) [Cereb Cortex] 2016 May; Vol. 26 (5), pp. 2059-2073. Date of Electronic Publication: 2015 Mar 05.
DOI:	10.1093/cercor/bhv028
Abstrakt:	Visual attentional capacity is severely limited, but humans excel in familiar visual contexts, in part because long-term memories guide efficient deployment of attention. To investigate the neural substrates that support memory-guided visual attention, we performed a set of functional MRI experiments that contrast long-term, memory-guided visuospatial attention with stimulus-guided visuospatial attention in a change detection task. Whereas the dorsal attention network was activated for both forms of attention, the cognitive control network(CCN) was preferentially activated during memory-guided attention. Three posterior nodes in the CCN, posterior precuneus, posterior callosal sulcus/mid-cingulate, and lateral intraparietal sulcus exhibited the greatest specificity for memory-guided attention. These 3 regions exhibit functional connectivity at rest, and we propose that they form a subnetwork within the broader CCN. Based on the task activation patterns, we conclude that the nodes of this subnetwork are preferentially recruited for long-term memory guidance of visuospatial attention. (Published by Oxford University Press 2015. This work is written by (a) US Government employee(s) and is in the public domain in the US.)
Databáze:	MEDLINE
Externí odkaz:	Zobrazit plný text záznamu