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Finger tremor in Parkinson's disease
1Department of Biology and Preclinical Medicine, University of St Andrews, Fife, UK.
Journal of Neurology, Neurosurgery, and Psychiatry
|March 1, 1989
Summary
Instrumental analysis of finger tremor reveals subtle differences in idiopathic Parkinson's disease patients, even when tremor is not clinically obvious. This method shows potential for diagnosing Parkinson's disease in uncertain cases.
Area of Science:
- Neurology
- Biomedical Engineering
Background:
- Idiopathic Parkinson's disease (IPD) is a neurodegenerative disorder characterized by motor symptoms, including tremor.
- Clinical assessment of tremor in IPD can be challenging, particularly in early or subtle cases.
Purpose of the Study:
- To investigate finger tremor characteristics in IPD patients compared to healthy controls.
- To explore the diagnostic potential of instrumental tremor analysis, especially in cases with non-obvious tremor.
Main Methods:
- Instrumental analysis of finger tremor recordings in 20 IPD patients and 6 age-matched controls.
- Surface electromyography (EMG) recordings were obtained from four IPD patients.
Main Results:
- Observable differences in tremor patterns were detected between IPD patients and controls, even when tremor was not clinically apparent.
- EMG analysis revealed reciprocating activity in flexor and extensor muscles after voluntary movement in patients without symptomatic tremor.
Conclusions:
- Instrumental tremor analysis can identify subtle differences in IPD patients, aiding diagnosis when clinical signs are uncertain.
- Post-movement muscle activity patterns detected via EMG may serve as a biomarker for subclinical tremor in Parkinson's disease.