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Automatic and controlled processing in chronic tic disorders.

K O'Connor1, M Robert, J Dubord

  • 1Centre de recherche Fernand-Séguin, Montréal, Canada.

Brain and Cognition
|June 17, 2000
PubMed
Summary
This summary is machine-generated.

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People with chronic tic disorder (CTD) struggle more to stop automated actions than controlled ones. This difficulty in response inhibition specifically impacts automatic processes in CTD.

Area of Science:

  • Neuroscience
  • Cognitive Psychology
  • Clinical Psychology

Background:

  • Chronic tic disorder (CTD) and habit disorder (HD) involve difficulties with response inhibition.
  • Understanding the specific deficits in motor control and inhibition is crucial for these conditions.

Purpose of the Study:

  • To compare controlled and automatic response processing in individuals with CTD, HD, and healthy controls.
  • To investigate response inhibition capabilities in different motor control conditions.

Main Methods:

  • A countermanding paradigm was employed using computer-based traffic light signals.
  • Response initiation (GO-time) and response inhibition (STOP-time) were measured under automated and controlled response conditions.
  • Participants included 17 with CTD, 20 with HD, and 30 screened controls.

Related Experiment Videos

Main Results:

  • No significant group differences were found in GO-time across conditions.
  • A practice effect was observed in the control group but not in the HD or CTD groups.
  • The CTD group demonstrated significantly slower STOP-times for automated responses compared to controlled responses.

Conclusions:

  • Individuals with CTD exhibit specific impairments in inhibiting automated actions.
  • The findings suggest a distinct deficit in motor response inhibition for automatic processes in CTD.
  • These results contribute to understanding the neurocognitive underpinnings of tic disorders.