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Emotional faces modulate eye movement control on an antisaccade task.

Luis A Llamas-Alonso1, Armando Q Angulo-Chavira1, Andrés A González-Garrido1

  • 1Instituto de Neurociencias, Universidad de Guadalajara, Mexico.

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Emotional faces, particularly angry ones, impair cognitive control. This study shows angry faces disrupt inhibitory control and attention reorientation, requiring more effort to manage automatic responses.

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Area of Science:

  • Cognitive Neuroscience
  • Social Neuroscience
  • Neuroscience

Background:

  • Cognitive control is essential for behavior, enabling voluntary actions over automatic responses.
  • Emotional stimuli, especially facial expressions, pose challenges to cognitive control due to their salience.
  • Understanding how emotional faces affect inhibitory control and attention is crucial for cognitive and behavioral research.

Purpose of the Study:

  • To investigate the impact of angry facial expressions on cortical activity during saccadic inhibition and attention reorientation.
  • To evaluate behavioral performance, eye movements, and presaccadic event-related potentials in response to emotional stimuli.

Main Methods:

  • Thirty participants completed an antisaccadic task with peripheral presentation of neutral and angry faces.
  • Behavioral accuracy and saccade onset latency were recorded.
  • Presaccadic event-related potentials, specifically positive presaccadic slope and spike potential, were measured.

Main Results:

  • Accuracy was reduced when participants viewed angry faces compared to neutral faces.
  • Saccade onset latency differed: longer for angry faces in prosaccadic trials and shorter in antisaccadic trials.
  • Higher spike potential amplitudes were observed for angry faces, indicating increased cortical activity.

Conclusions:

  • Angry facial expressions demand greater cognitive effort for inhibitory control and voluntary attention reorientation.
  • The findings highlight the significant influence of salient emotional stimuli on executive functions.
  • This research contributes to understanding the neural mechanisms underlying emotional modulation of cognitive control.