Academic Journal
Portable system for quantifying motor abnormalities in Parkinson's disease
| Τίτλος: | Portable system for quantifying motor abnormalities in Parkinson's disease |
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| Συγγραφείς: | Ghika, J., Wiegner, A. W., Fang, J. J., Davies, L., Young, R. R., Growdon, J. H. |
| Έτος έκδοσης: | 2025 |
| Συλλογή: | Université de Lausanne (UNIL): Serval - Serveur académique lausannois |
| Θεματικοί όροι: | Adult Aged Aged, 80 and over Female Humans Male Middle Aged Movement Disorders/*diagnosis/physiopathology Muscle Tonus/physiology Neurophysiology/*instrumentation Parkinson Disease/*diagnosis/physiopathology Reference Values *Signal Processing, Computer-Assisted |
| Περιγραφή: | In order to quantify motor disabilities in Parkinson's disease (PD), we designed a compact, portable, neurophysiological system based upon a personal computer to measure tremor, bradykinesia, and muscle tone. Tremor was detected by solid state accelerometers and translated into a digital signal. The system displayed the root mean square displacements and frequency distribution of the tremor in the horizontal and vertical planes, along with a reconstructed graphic image of the displacement. Bradykinesia was measured using a panel that detects release and depression of switches in response to auditory and visual signals; the system calculated subjects' reaction times and movement times in milliseconds. Tone at the elbow was measured by strapping the upper extremity to a lightweight low-friction cradle and then passively moving the cradle with an instrumented handle. Signals representing torque and arm angle were processed by the computer and displayed in real time on the screen with stiffness as a mean slope in Nm/degree. In clinical tests, quantitative measures of tremor, movement time and rigidity were significantly abnormal in PD patients compared to control subjects. We conclude that this system is a convenient and accurate method to quantitate important aspects of the parkinsonian syndrome, and may be applied to quantitate other movement disorders. |
| Τύπος εγγράφου: | article in journal/newspaper |
| Γλώσσα: | unknown |
| ISSN: | 0018-9294 |
| Relation: | IEEE Transactions on Biomedical Engineering; https://iris.unil.ch/handle/iris/156572; serval:BIB_6FD658E1FA95; A1993LH04400008; 8335331 |
| DOI: | 10.1109/10.216411 |
| Διαθεσιμότητα: | https://iris.unil.ch/handle/iris/156572 https://doi.org/10.1109/10.216411 |
| Αριθμός Καταχώρησης: | edsbas.492903FC |
| Βάση Δεδομένων: | BASE |
| ISSN: | 00189294 |
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| DOI: | 10.1109/10.216411 |