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Crosstalk Reduction in Epimysial EMG Recordings from Transhumeral Amputees with Principal Component Analysis

Matran-Fernandez, A and Mastinu, E and Poli, R and Ortiz-Catalan, M and Citi, L (2018) Crosstalk Reduction in Epimysial EMG Recordings from Transhumeral Amputees with Principal Component Analysis. In: 2018 40th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), 2018-07-18 - 2018-07-21, Honolulu, HI, USA.

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Abstract

Electromyographic (EMG) recordings of muscle activity using monopolar electrodes suffer from poor spatial resolution due to the crosstalk from neighbouring muscles. This effect has mainly been studied on surface EMG recordings. Here, we use Principal Component Analysis (PCA) to reduce the crosstalk in recordings from unipolar epimysial electrodes implanted in three transhumeral amputees. We show that the PCA-transformed signals have, on average, a better signal-to-noise ratio than the original unipolar recordings. Preliminary investigations show that this transformation is stable over long periods of time. If the latter is confirmed, our results show that the combination of PCA with unipolar electrodes allows for a higher number of muscles to be targeted in an implant (compared with bipolar electrodes), thus facilitating 1-to-1 proportional control of prosthetic hands.

Item Type: Conference or Workshop Item (Paper)
Additional Information: Published proceedings: 2018 40th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC)
Subjects: Q Science > QA Mathematics > QA75 Electronic computers. Computer science
R Medicine > R Medicine (General)
Divisions: Faculty of Science and Health > Computer Science and Electronic Engineering, School of
Depositing User: Elements
Date Deposited: 17 Jan 2019 10:20
Last Modified: 17 Jan 2019 11:15
URI: http://repository.essex.ac.uk/id/eprint/23789

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