NDLI: Features of parkinsonian and essential tremor of the human hand

Content Provider	Springer Nature Link
Author	Dick, O. E. zdrachev, A. D.
Copyright Year	2016
Abstract	Using spectral, wavelet, multifractal, and recurrence analyses we examined the features of involuntary shaking (tremor) that occur during the performance of a given motor task. The task was to maintain the efforts of fingers under isometric conditions by a healthy subject, a patient with primary bilateral parkinsonism, and a patient with essential tremor syndrome. The physiological tremor was characterized by the lowest amplitude, a broad power spectrum, the lowest energy of the wavelet spectrum, the highest degree of multifractality, the lowest degree of determinism, and the highest entropy of the recurrence time density. In the case of the essential tremor we observed a significant enhancement of the wavelet spectrum energy and a decrease of the oscillation complexity. This was evident via the occurrence of clear peaks in the power spectra, a decrease in the degree of multifractality, the emergence of a quasi-periodic structure in the recurrence diagrams, an increase in determinism and a decrease of the entropy of recurrence time density. All these trends were increased for the parkinsonian tremor data. These characteristics enable us to quantitatively estimate the degree of deviation of motor function from the healthy case.
Starting Page	271
Ending Page	278
Page Count	8
File Format	PDF
ISSN	03621197
Journal	Human Physiology
Volume Number	42
Issue Number	3
e-ISSN	16083164
Language	English
Publisher	Pleiades Publishing
Publisher Date	2016-06-28
Publisher Place	Moscow
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	essential tremor Parkinson’s disease multifractality wavelet spectrum recurrence analysis Life Sciences Human Physiology Biomedicine general
Content Type	Text
Resource Type	Article
Subject	Physiology Physiology (medical)

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