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Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Emotion Regulation

Background:

  • Healthy functioning relies on emotion regulation.
  • The impact of mental fatigue on emotion regulation is not well understood.
  • Cognitive resources are depleted by mental fatigue.

Purpose of the Study:

  • To investigate if mental fatigue impairs explicit emotion regulation.
  • To determine if cognitive task performance affects the ability to regulate emotions.
  • To examine the relationship between mental fatigue and emotional reactivity.

Main Methods:

  • Within-subject design with control and depletion sessions.
  • Participants performed cognitive tasks to induce mental fatigue.
  • Emotional reactivity and regulation were measured using the startle reflex response to visual stimuli.

Main Results:

  • Negative stimuli evoked similar aversive states regardless of mental fatigue.
  • Participants could down-regulate negative emotions only in the control session.
  • Mental fatigue prevented effective emotion regulation.

Conclusions:

  • Mental fatigue impairs emotion regulation, specifically the ability to reduce negative emotional states.
  • Emotional reactivity to negative stimuli is not affected by mental fatigue.
  • Current models of emotion regulation should incorporate the effects of mental fatigue.