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Disruption of Frontal Lobe Neural Synchrony During Cognitive Control by Alcohol Intoxication
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Published on: February 6, 2019

Phasic alertness can modulate executive control by enhancing global processing of visual stimuli.

Noam Weinbach1, Avishai Henik

  • 1Department of Psychology and the Zlotowski Center for Neuroscience, Ben-Gurion University of the Negev, Beer-Sheva, Israel. noam.weinbach@gmail.com

Cognition
|September 20, 2011
PubMed
Summary

The alerting system enhances conflict in local attention tasks but not global ones. Alerting may bias attention towards global processing, potentially hindering executive control by focusing on irrelevant stimuli.

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Measurement of Neurophysiological Signals of Ignoring and Attending Processes in Attention Control
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Measurement of Neurophysiological Signals of Ignoring and Attending Processes in Attention Control
09:37

Measurement of Neurophysiological Signals of Ignoring and Attending Processes in Attention Control

Published on: July 5, 2015

Area of Science:

  • Cognitive Neuroscience
  • Psychology

Background:

  • The human attention system comprises distinct networks, including alerting and executive control.
  • Understanding the interaction between these attentional networks is crucial for cognitive research.

Purpose of the Study:

  • To investigate the interaction between the alerting system and executive control.
  • To elucidate a specific mechanism by which alerting influences executive control functions.

Main Methods:

  • Participants performed a task involving global and local arrow stimuli, which could be congruent or incongruent.
  • Participants were instructed to focus on either the global or local level of the arrows in separate blocks.
  • An auditory alerting cue was presented before the target stimulus in half of the trials.

Main Results:

  • The congruency effect was significantly larger in the local attention task when an alerting cue was present compared to when it was absent.
  • Alerting did not influence the congruency effect in the global attention task.
  • These findings suggest a differential impact of alerting on processing local versus global information.

Conclusions:

  • Alerting may bias attention towards global processing, potentially increasing sensitivity to surrounding sensory information.
  • This bias could interfere with executive control by diverting attention to irrelevant stimuli, thereby exacerbating conflict resolution challenges.
  • The study highlights a specific pathway through which the alerting network modulates executive control processes.