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Brain imaging technologies provide critical insights into both the structure and function of the human brain, enabling medical professionals and researchers to diagnose, study, and treat neurological disorders or psychiatric disorders more effectively.
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Area of Science:

  • Neuroscience
  • Cognitive Psychology
  • Affective Science

Background:

  • Adaptive functioning relies on context-sensitive, goal-oriented responses to emotional events.
  • The lateral prefrontal cortex (LPFC) is theorized to support cognitive control via goal-relevant representations.
  • Causal evidence for LPFC's role in emotion regulation and cognitive control is limited.

Purpose of the Study:

  • To investigate the causal role of mid-LPFC goal-relevant representations in cognitive control during emotional processing.
  • To test the hypothesis that mid-LPFC maintains representations critical for goal-oriented action in affective contexts.

Main Methods:

  • Utilized continuous theta burst (cTBS) to temporarily disrupt mid-LPFC function in healthy participants.
  • Employed functional magnetic resonance imaging (fMRI) during an Affective Go/No-Go task.
  • Targeted mid-LPFC based on individualized action-goal representations, with a control site comparison.

Main Results:

  • cTBS over mid-LPFC reduced action-goal representations within the targeted region.
  • Mid-LPFC disruption impaired goal-oriented action, particularly when processing negative emotional cues.
  • Reduced functional connectivity between mid-LPFC and default mode network nodes (e.g., frontopolar cortex) was observed during negative cue processing.

Conclusions:

  • Mid-LPFC goal-relevant representations causally mediate context-sensitive cognitive control during emotional processing.
  • These findings highlight the role of LPFC in integrating emotional information for adaptive goal-directed behavior.
  • The study provides causal evidence linking LPFC function to emotion regulation and cognitive control.