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Facilitory paratonia and frontal lobe functioning

D Q Beversdorf1, K M Heilman

  • 1Department of Neurology, Ohio State University Medical Center, Columbus 43210, USA.

Neurology
|October 22, 1998
PubMed
Summary
This summary is machine-generated.

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Paratonia, a muscle tone alteration, strongly predicts general cognitive performance in dementia patients. Both oppositional and facilitory types, along with the modified Kral procedure, are key indicators.

Area of Science:

  • Neurology
  • Geriatrics
  • Cognitive Science

Background:

  • Paratonia, an alteration in muscle tone during passive movement, presents as oppositional or facilitory types.
  • Previous research on paratonia and cognitive impairment is limited, focusing mainly on oppositional paratonia without quantitative measures.
  • The relationship between facilitory paratonia and cognitive function remains largely unexplored.

Purpose of the Study:

  • To investigate whether paratonia predicts frontal cognitive impairments.
  • To assess the predictive value of both oppositional and facilitory paratonia for cognitive deficits.
  • To evaluate the modified Kral procedure as a quantitative measure for facilitory paratonia.

Main Methods:

  • Twenty-five patients with degenerative dementia were assessed using semiquantitative scales for paratonia.

Related Experiment Videos

  • The modified Kral procedure was employed to quantitatively assess facilitory paratonia.
  • Frontal lobe functions were evaluated through tests for echopraxia, distractibility, and word fluency, alongside the Mini-Mental State Examination (MMSE) for general cognitive screening.

    • Main Results:

    • The modified Kral procedure showed a strong correlation with facilitory paratonia, exceeding that with oppositional paratonia.
    • The modified Kral procedure predicted echopraxia but showed weaker prediction for other frontal lobe tests.
    • Both facilitory and oppositional paratonia, as well as the modified Kral procedure, were strong predictors of MMSE scores.

    Conclusions:

    • Both facilitory and oppositional paratonia are significant predictors of overall cognitive performance in patients with dementia.
    • The modified Kral procedure serves as a reliable measure for facilitory paratonia and predicts deficits in frontal lobe functions.