Tagging cortical networks in emotion: A topographical analysis
Version of Record online: 23 SEP 2011
Copyright © 2011 Wiley Periodicals, Inc.
Human Brain Mapping
Volume 33, Issue 12, pages 2920–2931, December 2012
How to Cite
Keil, A., Costa, V., Smith, J. C., Sabatinelli, D., McGinnis, E. M., Bradley, M. M. and Lang, P. J. (2012), Tagging cortical networks in emotion: A topographical analysis. Hum. Brain Mapp., 33: 2920–2931. doi: 10.1002/hbm.21413
- Issue online: 7 NOV 2012
- Version of Record online: 23 SEP 2011
- Manuscript Accepted: 24 JUN 2011
- Manuscript Revised: 30 MAY 2011
- Manuscript Received: 3 MAR 2011
- dense-array EEG;
- picture perception
Viewing emotional pictures is associated with heightened perception and attention, indexed by a relative increase in visual cortical activity. Visual cortical modulation by emotion is hypothesized to reflect re-entrant connectivity originating in higher-order cortical and/or limbic structures. The present study used dense-array electroencephalography and individual brain anatomy to investigate functional coupling between the visual cortex and other cortical areas during affective picture viewing. Participants viewed pleasant, neutral, and unpleasant pictures that flickered at a rate of 10 Hz to evoke steady-state visual evoked potentials (ssVEPs) in the EEG. The spectral power of ssVEPs was quantified using Fourier transform, and cortical sources were estimated using beamformer spatial filters based on individual structural magnetic resonance images. In addition to lower-tier visual cortex, a network of occipito-temporal and parietal (bilateral precuneus, inferior parietal lobules) structures showed enhanced ssVEP power when participants viewed emotional (either pleasant or unpleasant), compared to neutral pictures. Functional coupling during emotional processing was enhanced between the bilateral occipital poles and a network of temporal (left middle/inferior temporal gyrus), parietal (bilateral parietal lobules), and frontal (left middle/inferior frontal gyrus) structures. These results converge with findings from hemodynamic analyses of emotional picture viewing and suggest that viewing emotionally engaging stimuli is associated with the formation of functional links between visual cortex and the cortical regions underlying attention modulation and preparation for action. Hum Brain Mapp, 2012. © 2011 Wiley Periodicals, Inc.