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Employing Transcranial Magnetic Stimulation in a Resource Limited Environment to Establish Brain-Behavior Relationships
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The medial prefrontal cortex: a potential link between self-deception and affect.

Kelly A Duran1, Hannah O'Halloran2, Heather Soder3

  • 1School of Public Policy and Administration, University of Delaware, Newark, New Jersey, USA.

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|April 8, 2020
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Disrupting the Medial Prefrontal Cortex (MPFC) reduced participants' mood. This suggests the MPFC is vital for maintaining positive self-esteem and emotional well-being.

Keywords:
MPFCTMSaffectsocial neuroscience

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Area of Science:

  • Neuroscience
  • Cognitive Psychology

Background:

  • The Medial Prefrontal Cortex (MPFC) plays a key role in social functioning, self-awareness, and self-enhancement.
  • The MPFC may be involved in buffering negative affect and maintaining positive self-esteem.
  • Previous research indicates MPFC disruption leads to more honest responses, suggesting a role in self-deception.

Purpose of the Study:

  • To investigate the hypothesis that disrupting the MPFC leads to a decrease in affect.
  • To explore the MPFC's role in emotional regulation and self-enhancement.

Main Methods:

  • Utilized a virtual lesion Transcranial Magnetic Stimulation (TMS) technique to disrupt the MPFC.
  • Participants rated their mood using two anchor affect terms during TMS.
  • Compared mood ratings following single-pulse MPFC stimulation versus sham TMS.

Main Results:

  • Mood was significantly reduced immediately following single-pulse MPFC stimulation compared to sham TMS.
  • The results support the hypothesis that MPFC disruption leads to mood reduction.
  • This finding aligns with previous self-deception studies.

Conclusions:

  • Disruption of the MPFC leads to a decrease in mood.
  • The findings suggest that a lack of self-enhancement, potentially mediated by the MPFC, may contribute to reduced mood.
  • Further research is warranted to explore the link between self-enhancement and mood regulation.