Document Type
Article
Publication Date
8-1-2018
Publication Title
Cerebral Cortex
Abstract
Long-term memory (LTM) helps to efficiently direct and deploy the scarce resources of the attentional system; however, the neural substrates that support LTM-guidance of visual attention are not well understood. Here, we present results from Fmri experiments that demonstrate that cortical and subcortical regions of a network defined by resting-state functional connectivity are selectively recruited for LTM-guided attention, relative to a similarly demanding stimulus-guided attention paradigm that lacks memory retrieval and relative to a memory retrieval paradigm that lacks covert deployment of attention. Memory-guided visuospatial attention recruited posterior callosal sulcus, posterior precuneus, and lateral intraparietal sulcus bilaterally. Additionally, 3 subcortical regions defined by intrinsic functional connectivity were recruited: the caudate head, mediodorsal thalamus, and cerebellar lobule VI/Crus I. Although the broad resting-state network to which these nodes belong has been referred to as a cognitive control network, the posterior cortical regions activated in the present study are not typically identified with supporting standard cognitive control tasks.We propose that these regions form a Memory-Attention Network that is recruited for processes that integrate mnemonic and stimulus-based representations to guide attention. These findings may have important implications for understanding the mechanisms by which memory retrieval influences attentional deployment.
Keywords
cingulated, functional MRI, lateral IPS, posterior precuneus
Volume
28
Issue
8
First Page
2935
Last Page
2947
DOI
10.1093/cercor/bhx172
ISSN
10473211
Rights
© The Author 2017
Recommended Citation
Rosen, Maya L.; Stern, Chantal E.; Devaney, Kathryn J.; and Somers, David C., "Cortical and subcortical contributions to long-term memory-guided visuospatial attention" (2018). Neuroscience: Faculty Publications, Smith College, Northampton, MA.
https://scholarworks.smith.edu/nsc_facpubs/127
Comments
Archived as published.