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Cereb Cortex. 2016 May;26(5):2059-2073. doi: 10.1093/cercor/bhv028. Epub 2015 Mar 5.

Cognitive Control Network Contributions to Memory-Guided Visual Attention.

Author information

1
Department of Psychological and Brain Sciences.
2
Center for Memory and Brain.
3
Graduate Program for Neuroscience, Boston University, Boston, MA 02215, USA.

Abstract

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.

KEYWORDS:

change detection; functional MRI; functional connectivity; long-term memory; posterior parietal cortex

PMID:
25750253
PMCID:
PMC4830287
DOI:
10.1093/cercor/bhv028
[Indexed for MEDLINE]
Free PMC Article

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