title: Chapter 6. Mechanisms of changes in dynamic complexity of involuntary oscillations of the human hand with movement disorders
metadata.name: dc.contributor.author
metadata.value: Dik, Olga E.
metadata.lang: -
metadata.name: dc.contributor.author
metadata.value: Nozdrachev, Alexander D.
metadata.lang: -
metadata.name: dc.date.accessioned
metadata.value: 2020-12-02T09:26:48Z
metadata.lang: -
metadata.name: dc.date.available
metadata.value: 2020-12-02T09:26:48Z
metadata.lang: -
metadata.name: dc.date.issued
metadata.value: 2019
metadata.lang: -
metadata.name: dc.identifier.other
metadata.value: https://doi.org/10.21638/11701/9785288059322.07
metadata.lang: -
metadata.name: dc.identifier.uri
metadata.value: http://hdl.handle.net/11701/21152
metadata.lang: -
metadata.name: dc.description.abstract
metadata.value: The sixth chapter examines the mechanisms of changes in the dynamic complexity of hand
  tremor with an increase in the degree of motor disorders. For this, multifractal and wavelet
  properties of involuntary oscillations that arise during the performance of certain motor tasks
  by a healthy person and a person with varying degrees of motor pathology are investigated.
  It was shown that clinical manifestations of pathological tremor correlate, firstly, with a significant
  increase in the global energy of the wavelet spectrum and, secondly, with a decrease in the width
  of the singularity spectrum. At the same time, an improvement in the functional state (a decrease
  in the amplitude of a pathological tremor) corresponds to a decrease in long-term correlations and
  an increase in the randomness of up-down patterns, which corresponds to a partial shift of the
  singularity spectrum into the range of values typical for a tremor of the hand of a healthy person.
  The mechanism for reducing the dynamic complexity of patterns of involuntary oscillations of
  the human hand with an increase in the degree of motor disorders is based on a decrease in the
  contribution of strong fluctuations, accompanied by the appearance of long-term correlations of
  sequential values of tremor. The considered features in changes in tremor patterns make it possible
  to quantify the degree of movement disorders and can be used to facilitate the differential diagnosis of the parkinsonian and essential tremor in complex clinical cases.
metadata.lang: en_GB
metadata.name: dc.language.iso
metadata.value: ru
metadata.lang: en_GB
metadata.name: dc.publisher
metadata.value: St Petersburg State University
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: multifractality degree
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: singularity spectrum
metadata.lang: en_GB
metadata.name: dc.subject
metadata.value: parkinsonian and essential tremor
metadata.lang: en_GB
metadata.name: dc.title
metadata.value: Chapter 6. Mechanisms of changes in dynamic complexity of involuntary oscillations of the human hand with movement disorders
metadata.lang: en_GB
metadata.name: dc.type
metadata.value: Book chapter
metadata.lang: en_GB
resources.filename: 99-131.pdf
resources.url: https://dspace.spbu.ru/bitstream/11701/21152/1/99-131.pdf
resources.format: Adobe PDF
resources.size: 6,59 MB