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Related Experiment Videos

Measuring alertness.

Michael I Posner1

  • 1Department of Psychology, University of Oregon, Eugene, OR 97403-1227, USA. mposner@uoregon.edu

Annals of the New York Academy of Sciences
|July 2, 2008
PubMed
Summary
This summary is machine-generated.

Research shows attention involves distinct networks for alertness, orienting, and executive control. Understanding these attentional networks is key to cognitive psychology and neuroscience research.

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Area of Science:

  • Cognitive Psychology
  • Neuroscience

Background:

  • Attention is multifaceted, not a single entity.
  • Research has identified distinct attentional networks: alerting, orienting, and executive control.
  • Neuroimaging, neurochemical, and genetic studies support distinct brain networks for attention.

Purpose of the Study:

  • To review methods for activating phasic and tonic alertness.
  • To discuss individual and group differences in attentional network efficiency.
  • To emphasize alertness as a key attentional function.

Main Methods:

  • Review of cognitive psychology tasks for attention measurement.
  • Analysis of neuroimaging, neurochemical, and genetic studies.
  • Discussion of methods to activate phasic and tonic alerting.

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Main Results:

  • Confirmation of separate but overlapping brain areas for attentional networks.
  • Identification of distinctions between brain networks involved in attention.
  • Emphasis on the importance of the alerting network.

Conclusions:

  • Attention comprises distinct functional networks.
  • The alerting network plays a crucial role in attention.
  • Further research is needed to understand individual differences in attentional network efficiency.