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Cognitive disturbances in progressive supranuclear palsy

I Litvan1

  • 1Neuroepidemiology Branch, National Institutes of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, Maryland.

Journal of Neural Transmission. Supplementum
|January 1, 1994
PubMed
Summary

Progressive supranuclear palsy (PSP) causes cognitive issues like memory recall deficits and slowed processing. These, along with executive dysfunction, characterize PSP and distinguish it from other dementias.

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Area of Science:

  • Neurology
  • Neuroscience
  • Cognitive Science

Background:

  • Cognitive disturbances in progressive supranuclear palsy (PSP) led to the term "subcortical dementia."
  • Early descriptions by Steele et al. (1964) and Albert et al. (1974) noted cognitive changes in PSP patients.

Purpose of the Study:

  • To characterize the cognitive profile of progressive supranuclear palsy (PSP).
  • To differentiate PSP-related cognitive deficits from other dementia types.

Main Methods:

  • Review of clinical descriptions and case studies of progressive supranuclear palsy (PSP).
  • Analysis of cognitive symptoms including memory, information processing, and executive function.

Main Results:

  • PSP patients exhibit prominent recall deficits but intact short-term and implicit memory.
  • Slowed motor responses and significantly slowed information processing speed are observed.
  • Early and severe executive dysfunction is a hallmark of PSP.

Conclusions:

  • The combination of slowed processing and executive dysfunction uniquely characterizes PSP.
  • PSP's cognitive profile distinguishes it from cortical dementias presenting with aphasia, apraxia, or agnosia.
  • Symptoms suggest similarities to cognitive changes seen in frontal lobe lesions.

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