Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Portable device for quantifying parkinsonian wrist rigidity

M P Caligiuri1

  • 1Department of Psychiatry, University of California, San Diego.

Movement Disorders : Official Journal of the Movement Disorder Society
|January 1, 1994
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

A portable hand-held device for quantifying and standardizing tremor assessment.

Journal of medical engineering & technology·2004
Same author

Neuromotor abnormalities and risk for psychosis in Alzheimer's disease.

Neurology·2003
Same author

Extrapyramidal signs and cognitive abilities in Alzheimer's disease.

International journal of geriatric psychiatry·2001
Same author

Relationship of gender and age at onset of schizophrenia to severity of dyskinesia.

The Journal of neuropsychiatry and clinical neurosciences·2001
Same author

Motor and cognitive aspects of motor retardation in depression.

Journal of affective disorders·2000
Same author

An instrumental study of the relationship between extrapyramidal signs and psychosis in Alzheimer's disease.

The Journal of neuropsychiatry and clinical neurosciences·2000

A new portable device objectively measures wrist rigidity in parkinsonism. This tool shows high correlation with clinical assessments, offering a more accessible method for evaluating muscle stiffness.

Area of Science:

  • Neurology
  • Biomedical Engineering
  • Medical Devices

Background:

  • Parkinsonism assessment often relies on subjective clinical evaluations of muscular rigidity.
  • Objective quantification of parkinsonian rigidity is crucial for accurate diagnosis and treatment monitoring.
  • Existing methods for measuring rigidity may lack portability or face validity.

Purpose of the Study:

  • To develop and validate a portable transducer for objectively quantifying wrist muscular rigidity.
  • To assess the correlation between the device's objective rigidity score and clinical ratings of parkinsonism.
  • To evaluate the diagnostic performance (specificity and sensitivity) of the developed device.

Main Methods:

  • Development of a portable transducer designed to measure wrist rigidity.

Related Experiment Videos

  • Testing the device on 25 healthy controls and 29 patients with parkinsonism (some on medication).
  • Calculating an objective rigidity score based on motor activity-induced wrist stiffness.
  • Comparing the objective score with clinical rigidity assessments.

    • Main Results:

    • The objective rigidity score derived from the transducer showed a high correlation with clinical ratings.
    • The device demonstrated 89% specificity and 82% sensitivity in identifying parkinsonian rigidity.
    • The developed transducer is portable and exhibits apparent face validity.

    Conclusions:

    • The portable wrist rigidity transducer provides an objective and valid measure for parkinsonism assessment.
    • This device offers a practical alternative to existing, potentially less portable, rigidity quantification techniques.
    • The findings support the use of this transducer for improved objectivity in diagnosing and managing parkinsonian rigidity.