Quantitative assessment of cerebella ataxia through automated upper limb functional tests

Krishna, Ragil, Pathirana, Pubudu, Horne, Malcolm, Power, Laura and Szmulewicz, David 2019, Quantitative assessment of cerebella ataxia through automated upper limb functional tests, in Proceedings of SPIE : Tenth International Conference on Signal Processing Systems, SPIE, Washington, USA, pp. 1-7, doi: 10.1117/12.2520693.

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Title Quantitative assessment of cerebella ataxia through automated upper limb functional tests
Author(s) Krishna, Ragil
Pathirana, PubuduORCID iD for Pathirana, Pubudu orcid.org/0000-0001-8014-7798
Horne, Malcolm
Power, Laura
Szmulewicz, David
Conference name Signal Processing Systems. International Conference (10th : 2018 : Singapore)
Conference location Singapore
Conference dates 2018/11/16 - 2018/11/18
Title of proceedings Proceedings of SPIE : Tenth International Conference on Signal Processing Systems
Editor(s) Mao, K.
Jiang, X.
Publication date 2019
Start page 1
End page 7
Total pages 7
Publisher SPIE
Place of publication Washington, USA
Keyword(s) finger-to-nose (FNT)
Diadochokinesia (DDK)
Fast Fourier Transforms (FFT)
linear dicriminant analysis (LDA)
Summary Neurological disorders typically exhibit movement disabilities and disorders such as cerebellar ataxia (CA) can cause coordination inaccuracies often manifested as disabilities associated with gait, balance and speech. Since the severity assessment of the disorder is based on the expert clinical opinion, it is likely to be subjective. Automated versions of two upper limb tests: Finger to Nose test (FNT) and Diadochokinesia (DDK) test are investigated in this paper. Inertial Measurement Units (IMU) (BioKinTM ) are employed to capture the disability by measuring limb movements. Translational and rotational accelerations considered as kinematic parameters provided the features relevant to characteristic movements intrinsic to the disability. Principal Component Analysis (PCA) and multi-class Linear Discriminant classifier (LDA) were instrumental in dominant features correlating with the clinical scores. The relationship between clinicians assessment and the objective analysis is examined using Pearson Correlation. This study found that although FNT predominantly consist of translational movements, rotation was the dominant feature while for the case of DDK that predominantly consist of rotational movements, acceleration was the dominant feature. The degree of correlation in each test was also enhanced by combining the features in different tests.
ISBN 9781510628359
ISSN 0277-786X
1996-756X
Language eng
DOI 10.1117/12.2520693
HERDC Research category E1 Full written paper - refereed
ERA Research output type E Conference publication
Copyright notice ©2019, SPIE
Persistent URL http://hdl.handle.net/10536/DRO/DU:30121130

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