Understanding Disgust in the Brain
Author Information
Author(s): Jabbi Mbemba, Bastiaansen Jojanneke, Keysers Christian
Primary Institution: National Institutes of Mental Health, Bethesda, Maryland, USA; University Medical Center Groningen, Groningen, The Netherlands
Hypothesis
A common insula region involved in the experience and observation of disgust will also be activated during imagination, with distinct functional connectivity across modalities.
Conclusion
The study found that the anterior insula is involved in experiencing, observing, and imagining disgust, but the brain's connectivity differs depending on the modality.
Supporting Evidence
- Participants rated disgust scripts as more disgusting than neutral ones.
- fMRI results showed significant activation in the anterior insula during all modalities of disgust.
- Effective connectivity analysis revealed distinct networks for each modality.
Takeaway
When we think about something disgusting, the same part of our brain lights up as when we see someone else being disgusted or when we taste something gross.
Methodology
Participants underwent fMRI while experiencing, observing, and imagining disgust through various stimuli, including scripts and taste tests.
Limitations
The study's findings may not generalize beyond the specific emotions tested, and the sample size was relatively small.
Participant Demographics
12 healthy right-handed volunteers (6 females) with normal or corrected vision.
Statistical Information
P-Value
p<0.001
Statistical Significance
p<0.001
Digital Object Identifier (DOI)
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