Authors
Adam Gazzaley, Jesse Rissman, Jeffrey Cooney, Aaron Rutman, Tyler Seibert, Wesley Clapp, Mark D'Esposito
Publication date
2007/9/1
Journal
Cerebral cortex
Volume
17
Issue
suppl_1
Pages
i125-i135
Publisher
Oxford University Press
Description
Attention-dependent modulation of neural activity in visual association cortex (VAC) is thought to depend on top-down modulatory control signals emanating from the prefrontal cortex (PFC). In a previous functional magnetic resonance imaging study utilizing a working memory task, we demonstrated that activity levels in scene-selective VAC (ssVAC) regions can be enhanced above or suppressed below a passive viewing baseline level depending on whether scene stimuli were attended or ignored . Here, we use functional connectivity analysis to identify possible sources of these modulatory influences by examining how network interactions with VAC are influenced by attentional goals at the time of encoding. Our findings reveal a network of regions that exhibit strong positive correlations with a ssVAC seed during all task conditions, including foci in the left middle frontal gyrus (MFG). This PFC region is more …
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