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Functional anatomical correlates of controlled and automatic processing.

J M Jansma1, N F Ramsey, H A Slagter

  • 1Department o f psychiatry, University Medical Center, Utrecht, The Netherlands. j.m.jansma@azu.nl

Journal of Cognitive Neuroscience
|September 21, 2001
PubMed
Summary
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Consistent practice of cognitive tasks enhances performance by shifting brain activity from controlled to automatic processing. This practice reduces brain activation in specific regions, indicating increased efficiency rather than a change in brain areas used.

Area of Science:

  • Cognitive Neuroscience
  • Neuroimaging
  • Human Brain Activity

Background:

  • Consistent practice improves cognitive task performance by automating processing.
  • Understanding the neural mechanisms underlying the shift from controlled to automatic processing is crucial.

Purpose of the Study:

  • To investigate how brain activity changes during the transition from controlled to automatic cognitive task processing.
  • To differentiate neural correlates of working memory (WM) activity in novel versus practiced tasks.

Main Methods:

  • Utilized a verbal Sternberg task with novel (NT) and practiced (PT) conditions, contrasted with a control task (CT).
  • Employed functional magnetic resonance imaging (fMRI) with a 3-D PRESTO sequence to measure hemodynamic responses.
  • Analyzed behavioral data for performance changes (speed, variability, accuracy) and fMRI data for brain activation patterns.

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Main Results:

  • Behavioral improvements confirmed task automation after practice (faster, less variable, more accurate responses).
  • Reduced brain activation was observed in WM-related regions (e.g., dorsolateral prefrontal cortex) and the supplementary motor area with practice.
  • No evidence of a shift in the location of brain activity foci was found.

Conclusions:

  • Automatic and controlled processing share the same functional anatomical substrates but differ in efficiency.
  • Reduced brain activity with practice reflects improved performance, not necessarily impaired function.
  • Findings have implications for interpreting brain activity in patient studies and understanding cognitive automation.