Emotion-attention network interactions during a visual oddball task.

Published

Journal Article

Emotional and attentional functions are known to be distributed along ventral and dorsal networks in the brain, respectively. However, the interactions between these systems remain to be specified. The present study used event-related functional magnetic resonance imaging (fMRI) to investigate how attentional focus can modulate the neural activity elicited by scenes that vary in emotional content. In a visual oddball task, aversive and neutral scenes were presented intermittently among circles and squares. The squares were frequent standard events, whereas the other novel stimulus categories occurred rarely. One experimental group [N=10] was instructed to count the circles, whereas another group [N=12] counted the emotional scenes. A main effect of emotion was found in the amygdala (AMG) and ventral frontotemporal cortices. In these regions, activation was significantly greater for emotional than neutral stimuli but was invariant to attentional focus. A main effect of attentional focus was found in dorsal frontoparietal cortices, whose activity signaled task-relevant target events irrespective of emotional content. The only brain region that was sensitive to both emotion and attentional focus was the anterior cingulate gyrus (ACG). When circles were task-relevant, the ACG responded equally to circle targets and distracting emotional scenes. The ACG response to emotional scenes increased when they were task-relevant, and the response to circles concomitantly decreased. These findings support and extend prominent network theories of emotion-attention interactions that highlight the integrative role played by the anterior cingulate.

Full Text

Duke Authors

Cited Authors

  • Fichtenholtz, HM; Dean, HL; Dillon, DG; Yamasaki, H; McCarthy, G; LaBar, KS

Published Date

  • June 2004

Published In

Volume / Issue

  • 20 / 1

Start / End Page

  • 67 - 80

PubMed ID

  • 15130591

Pubmed Central ID

  • 15130591

International Standard Serial Number (ISSN)

  • 0926-6410

Digital Object Identifier (DOI)

  • 10.1016/j.cogbrainres.2004.01.006

Language

  • eng