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Related Experiment Videos

Cognition in stroke

J V Bowler1, U Hadar, J P Wade

  • 1Regional Neurosciences Centre, Charing Cross Hospital, London, Ontario, Canada.

Acta Neurologica Scandinavica
|December 1, 1994
PubMed
Summary
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Cognitive changes after cerebral infarction, particularly global effects, are understudied. This research found minimal memory deficits and predominantly subcortical changes, challenging current vascular dementia criteria.

Area of Science:

  • Neurology
  • Neuropsychology
  • Cognitive Science

Background:

  • Vascular dementia diagnostic criteria are of current interest.
  • Global cognitive changes following cerebral infarction are rarely studied.
  • Distinguishing global from focal cognitive deficits post-infarction is crucial.

Purpose of the Study:

  • To document neuropsychological changes after acute, first cerebral infarcts.
  • To assess cognitive changes at one to three weeks and three months post-infarction.
  • To investigate patterns of global cognitive change in relation to infarct location.

Main Methods:

  • Neuropsychological assessments were conducted in 25 unselected patients.
  • Patients experienced acute, first cerebral infarcts.

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  • Assessments occurred at two time points: 1-3 weeks and 3 months post-infarct.

    • Main Results:

    • Cognitive improvements were observed in functions associated with subcortical components.
    • Processes mediated by the right hemisphere showed improvement.
    • Memory functions were relatively minimally affected compared to other cognitive domains.

    Conclusions:

    • Observed minimal memory deficits and predominant subcortical changes contrast with existing vascular dementia criteria.
    • Current findings suggest a need for revised criteria for global cognitive changes in vascular dementia.
    • Further research is required to establish firm criteria for the global cognitive patterns in vascular dementia.