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- W2921366073 endingPage "e0213657" @default.
- W2921366073 startingPage "e0213657" @default.
- W2921366073 abstract "The main aim of the present study was to explore the value of several measures of handwriting in the study of motor abnormalities in patients with bipolar or psychotic disorders. 54 adult participants with a schizophrenia spectrum disorder or bipolar disorder and 44 matched healthy controls, participated in the study. Participants were asked to copy a handwriting pattern consisting of four loops, with an inking pen on a digitizing tablet. We collected a number of classical, non-linear and geometrical measures of handwriting. The handwriting of patients was characterized by a significant decrease in velocity and acceleration and an increase in the length, disfluency and pressure with respect to controls. Concerning non-linear measures, we found significant differences between patients and controls in the Sample Entropy of velocity and pressure, Lempel-Ziv of velocity and pressure, and Higuchi Fractal Dimension of pressure. Finally, Lacunarity, a measure of geometrical heterogeneity, was significantly greater in handwriting patterns from patients than from controls. We did not find differences in any handwriting measure on function of the specific diagnosis or the antipsychotic dose. Results indicate that participants with a schizophrenia spectrum disorder or bipolar disorder exhibit significant motor impairments and that these impairments can be readily quantified using measures of handwriting movements. Besides, they suggest that motor abnormalities are a core feature of several mental disorders and they seem to be unrelated to the pharmacological treatment." @default.
- W2921366073 created "2019-03-22" @default.
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- W2921366073 date "2019-03-14" @default.
- W2921366073 modified "2023-10-16" @default.
- W2921366073 title "Handwriting movements for assessment of motor symptoms in schizophrenia spectrum disorders and bipolar disorder" @default.
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- W2921366073 doi "https://doi.org/10.1371/journal.pone.0213657" @default.
- W2921366073 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/6417658" @default.
- W2921366073 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/30870472" @default.
- W2921366073 hasPublicationYear "2019" @default.