Alcohol Attenuates Activation in the Bilateral Anterior Insula During an Emotional Processing Task: a Pilot Study

Overview

Journal Alcohol Alcohol

Publisher Oxford University Press

Specialty Psychiatry

Date 2011 Jun 14

PMID 21665869

Citations 22

Authors

Claudia B Padula

Alan N Simmons

Scott C Matthews

Shannon K Robinson

Susan F Tapert

Marc A Schuckit

Martin P Paulus

Affiliations

Soon will be listed here.

Abstract

Aims: Alcohol acutely reduces agitation and is widely used in social situations, but the neural substrates of emotion processing during its intoxication are not well understood. We examine whether alcohol's social stress dampening effect may be via reduced activity in the cortical systems that subserve awareness of bodily sensations, and are associated with affective distress.

Methods: Blood oxygen level-dependent activation was measured through 24 functional magnetic resonance imaging sessions in 12 healthy volunteers during an emotional face-processing task following ingestion of a moderate dose of alcohol and a placebo beverage.

Results: Results revealed that bilateral anterior insula response to emotional faces was significantly attenuated following consumption of alcohol, when compared with placebo (clusters >1472 μl; corrected P < 0.05).

Conclusion: Attenuated response in the anterior insula after alcohol intake may explain some of the decreased interoceptive awareness described during intoxication.

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