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Ordering thoughts on thought disorder.

J McGrath1

  • 1Clinical Studies Unit, University of Queensland, Australia.

The British Journal of Psychiatry : the Journal of Mental Science
|March 1, 1991
PubMed
Summary
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Thought disorder, characterized by impaired executive planning, may stem from frontal lobe dysfunction. This study hypothesizes that deficits in cortical-subcortical loops projecting to the prefrontal cortex underlie these thought process issues.

Area of Science:

  • Neuroscience
  • Cognitive Psychology
  • Psychiatry

Background:

  • Thought disorder is a complex symptom observed across various psychiatric and neurological conditions.
  • Executive functions, including planning and editing, are crucial for coherent thought processes.

Purpose of the Study:

  • To investigate the potential link between thought disorder and frontal lobe dysfunction.
  • To propose a neurobiological model implicating cortical-subcortical loops in thought disorder.

Main Methods:

  • Review of existing data from aphasiology and neuropsychology.
  • Formulation of a hypothesis based on neuroanatomical and functional considerations.

Main Results:

  • Certain features of thought disorder align with known patterns of frontal lobe impairment.

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  • The proposed hypothesis suggests a common neurobiological basis for thought disorder.

    • Conclusions:

    • Thought disorder may represent a deficit in executive functions due to prefrontal cortex dysfunction.
    • Impaired performance on frontal lobe tests is predicted for thought-disordered patients irrespective of their diagnosis.