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Cerebral Cortex Advance Access originally published online on June 12, 2006
Cerebral Cortex 2007 17(5):1085-1091; doi:10.1093/cercor/bhl017
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© The Author 2006. Published by Oxford University Press. All rights reserved. For permissions, please e-mail: journals.permissions@oxfordjournals.org

Emotional Perception: Correlation of Functional MRI and Event-Related Potentials

Dean Sabatinelli1, Peter J. Lang1, Andreas Keil2 and Margaret M. Bradley1

1 NIMH Center for the Study of Emotion and Attention, University of Florida, Gainesville, FL 32610, USA, 2 Department of Psychology, University of Konstanz, Germany

Address correspondence to Dean Sabatinelli, PhD, Research Assistant Professor, CSEA-NIMH, University of Florida, PO Box 100165 HSC, Gainesville, FL 32610, USA. Email: sabat{at}ufl.edu.

Dense-array electrocortical and functional hemodynamic measures of human brain activity were collected to assess the relationship between 2 established neural measures of emotional reactivity. Recorded in parallel sessions, the slow-wave late positive potential (LPP) and visual cortical blood oxygen level–dependent (BOLD) signals were both modulated by the rated intensity of picture arousal. The amplitude of the LPP correlated significantly with BOLD intensity in lateral occipital, inferotemporal, and parietal visual areas across picture contents. Estimated strength of modeled regional sources did not correlate significantly with regional BOLD intensity. These data suggest that the enhanced positive slow wave seen over posterior sites during emotional picture processing represents activity in a circuit of visual cortical structures, reflecting a perceptual sensitivity to the motivational relevance of visual scenes.

Key Words: attention • emotion • ERP • fMRI • human • vision


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