Friend or foe? Multisensory interactions between emotional face expressions and pain processing in neural gamma-band responses

Daniel Senkowski, Janine Kautz, Michael Hauck, Roger Zimmermann, Andreas K. Engel
Symposium Talk
Last modified: 2008-06-11

Abstract


The encoding of facial expressions of people surrounding us is highly relevant, especially if their actions can induce pain or bodily harm. Painful events automatically capture our attention, which enables us to rapidly evaluate the environmental conditions in social settings (e.g., was the painful event due to an accident or caused by an aggressive act). Given the relevance of both stimulus types, it is likely that processing of facial emotions can influence pain perception. We studied the crossmodal effects of emotional face expressions (fear, happy, anger) on the processing of painful events using magnetoencephalography (MEG). Pain ratings were enhanced when a painful stimulus was presented simultaneously with a face compared to when it was presented alone. This might result from a higher level of arousal when faces are presented compared to when they are absent. Importantly, pain ratings were larger when the faces expressed an emotion than when they were neutral. This finding was paralleled by modulations in gamma-band responses recorded with MEG, which will be reported in this talk. Our results suggest that gamma-band oscillations might play an important role for the integration of painful stimuli with socially relevant inputs from other sensory modalities, such as emotional face expressions.

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