Advanced Parkinson's Disease Dysgraphia Analysis Based on Fractional Derivatives of Online Handwriting

Author(s):  
Jan Mucha ◽  
Jiri Mekyska ◽  
Marcos Faundez-Zanuy ◽  
Karmele Lopez-De-Ipina ◽  
Vojtech Zvoncak ◽  
...  
2018 ◽  
Vol 8 (12) ◽  
pp. 2566 ◽  
Author(s):  
Jan Mucha ◽  
Jiri Mekyska ◽  
Zoltan Galaz ◽  
Marcos Faundez-Zanuy ◽  
Karmele Lopez-de-Ipina ◽  
...  

Parkinson’s disease dysgraphia affects the majority of Parkinson’s disease (PD) patients and is the result of handwriting abnormalities mainly caused by motor dysfunctions. Several effective approaches to quantitative PD dysgraphia analysis, such as online handwriting processing, have been utilized. In this study, we aim to deeply explore the impact of advanced online handwriting parameterization based on fractional-order derivatives (FD) on the PD dysgraphia diagnosis and its monitoring. For this purpose, we used 33 PD patients and 36 healthy controls from the PaHaW (PD handwriting database). Partial correlation analysis (Spearman’s and Pearson’s) was performed to investigate the relationship between the newly designed features and patients’ clinical data. Next, the discrimination power of the FD features was evaluated by a binary classification analysis. Finally, regression models were trained to explore the new features’ ability to assess the progress and severity of PD. These results were compared to a baseline, which is based on conventional online handwriting features. In comparison with the conventional parameters, the FD handwriting features correlated more significantly with the patients’ clinical characteristics and provided a more accurate assessment of PD severity (error around 12%). On the other hand, the highest classification accuracy (ACC = 97.14%) was obtained by the conventional parameters. The results of this study suggest that utilization of FD in combination with properly selected tasks (continuous and/or repetitive, such as the Archimedean spiral) could improve computerized PD severity assessment.


2021 ◽  
Author(s):  
Frouke A.P. Nijhuis ◽  
Rianne Esselink ◽  
Rob M.A. Bie ◽  
Hans Groenewoud ◽  
Bastiaan R. Bloem ◽  
...  

2021 ◽  
Author(s):  
Taiji Tsunemi ◽  
Genko Oyama ◽  
Shinji Saiki ◽  
Taku Hatano ◽  
Jiro Fukae ◽  
...  

Author(s):  
Walaa A. Kamel ◽  
Ismail Ibrahim Ismail ◽  
Mohamed Ibrahim ◽  
Jasem Y. Al-Hashel

Abstract Background Parkinson’s disease (PD) is a neurodegenerative condition that has been reported following viral infections in rare occasions. Several neurological complications have emerged in association with coronavirus disease 2019 (COVID-19), since its declaration as a pandemic. Herein, we present a novel case of unexplained worsening of PD as the sole initial presentation of COVID-19, in the absence of fever or respiratory symptoms. Case presentation A 56-year-old male with advanced PD presented with severe rigidity, dystonic posturing of both feet, and confusion of 4 days duration. His condition progressed to an akinetic-rigid state and confusion during the following week, and a routine nasopharyngeal swab tested positive for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) on the 9th day of onset. He developed fever and dyspnea later and was intubated on the 10th day. Conclusion To our knowledge, worsening of PD symptoms as the sole initial manifestation of SARS-CoV-2 infection, in the absence of other cardinal features of COVID-19, has not been reported in the literature. We suggest testing for COVID-19 infection in patients with PD, especially advanced cases, who present with unexplained worsening of symptoms, even in the absence of COVID-19 cardinal features.


Author(s):  
Maria Antonietta Volonté ◽  
Giacomo Clarizio ◽  
Sebastiano Galantucci ◽  
Pietro Giuseppe Scamarcia ◽  
Rosalinda Cardamone ◽  
...  

1997 ◽  
Vol 69 (1-4) ◽  
pp. 99-111 ◽  
Author(s):  
Marc Levivier ◽  
Sophie Dethy ◽  
Frédéric Rodesch ◽  
Marc Peschanski ◽  
Arlette Vandesteene ◽  
...  

2017 ◽  
Vol 20 (11) ◽  
pp. 1207-1215 ◽  
Author(s):  
Julia Lowin ◽  
Kavita Sail ◽  
Rakhi Baj ◽  
Yash J. Jalundhwala ◽  
Thomas S. Marshall ◽  
...  

2017 ◽  
Vol 7 (1) ◽  
pp. 61-72 ◽  
Author(s):  
Theresa A Zesiewicz ◽  
Stephen Chriscoe ◽  
Theresa Jimenez ◽  
James Upward ◽  
Maria Davy ◽  
...  

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