Shannon entropy: A novel parameter for quantifying pentagon copying performance in non-demented Parkinson's disease patients

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00159816%3A_____%2F22%3A00077786" target="_blank" >RIV/00159816:_____/22:00077786 - isvavai.cz</a>

Alternative codes found

RIV/00216305:26220/22:PU142425 RIV/00216224:14740/22:00125465

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S1353802021004442?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S1353802021004442?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.parkreldis.2021.11.037" target="_blank" >10.1016/j.parkreldis.2021.11.037</a>

Result language

angličtina

Original language name

Shannon entropy: A novel parameter for quantifying pentagon copying performance in non-demented Parkinson's disease patients

Original language description

Introduction: Impaired copy of intersecting pentagons from the Mini-Mental State Examination (MMSE), has been used to assess dementia in Parkinson&apos;s disease (PD). We used a digitizing tablet during the pentagon copying test (PCT) as a potential tool for evaluating early cognitive deficits in PD without major cognitive impairment. We also aimed to uncover the neural correlates of the identified parameters using whole-brain magnetic resonance imaging (MRI). Methods: We enrolled 27 patients with PD without major cognitive impairment and 25 age-matched healthy controls (HC). We focused on drawing parameters using a digitizing tablet. Parameters with between-group differences were correlated with cognitive outcomes and were used as covariates in the whole-brain voxel-wise analysis using voxel-based morphometry; familywise error (FWE) threshold p &lt; 0.001. Results: PD patients differed from HC in attention domain z-scores (p &lt; 0.0001). In terms of tablet parameters, the groups differed in Shannon entropy (horizontal in-air, p = 0.003), which quantifies the movements between two strokes. In PD, a correlation was found between the median of Shannon entropy (horizontal in-air) and attention z-scores (R = -0.55, p = 0.006). The VBM revealed an association between our drawing parameter of interest and gray matter (GM) volume variability in the right superior parietal lobe (SPL). Conclusion: Using a digitizing tablet during the PCT, we identified a novel entropy-based parameter that differed between the nondemented PD and HC groups. This in-air parameter correlated with the level of attention and was linked to GM volume variability of the region engaged in spatial attention.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

30210 - Clinical neurology

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2022

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Parkinsonism &amp; Related Disorders

ISSN

1353-8020

e-ISSN

1873-5126

Volume of the periodical

94

Issue of the periodical within the volume

JAN 22

Country of publishing house

US - UNITED STATES

Number of pages

4

Pages from-to

45-48

UT code for WoS article

000748987300007

EID of the result in the Scopus database

—