Picture of athlete cycling

Open Access research with a real impact on health...

The Strathprints institutional repository is a digital archive of University of Strathclyde's Open Access research outputs. Strathprints provides access to thousands of Open Access research papers by Strathclyde researchers, including by researchers from the Physical Activity for Health Group based within the School of Psychological Sciences & Health. Research here seeks to better understand how and why physical activity improves health, gain a better understanding of the amount, intensity, and type of physical activity needed for health benefits, and evaluate the effect of interventions to promote physical activity.

Explore open research content by Physical Activity for Health...

Study on interaction between temporal and spatial information in classification of EMG signals in myoelectric prostheses

Menon, Radhika and Di Caterina, Gaetano and Lakany, Heba and Petropoulakis, Lykourgos and Conway, Bernard A. and Soraghan, John J. (2017) Study on interaction between temporal and spatial information in classification of EMG signals in myoelectric prostheses. IEEE Transactions on Neural Systems and Rehabilitation Engineering. ISSN 1534-4320 (In Press)

[img]
Preview
Text (Menon-etal-IEEETNSRE2017-Study-on-interaction-between-temporal-and-spatial-information)
Menon_etal_IEEETNSRE2017_Study_on_interaction_between_temporal_and_spatial_information.pdf - Accepted Author Manuscript

Download (1MB) | Preview

Abstract

Advanced forearm prosthetic devices employ classifiers to recognize different electromyography (EMG) signal patterns, in order to identify the user's intended motion gesture. The classification accuracy is one of the main determinants of real-time controllability of a prosthetic limb and hence the necessity to achieve as high an accuracy as possible. In this paper, we study the effects of the temporal and spatial information provided to the classifier on its offline performance and analyze their interdependencies. EMG data associated with seven practical hand gestures were recorded from partial-hand and trans-radial amputee volunteers as well as able-bodied volunteers. An extensive investigation was conducted to study the effect of analysis window length, window overlap a nd the number of electrode channels on the classification accuracy as well as their interactions. Our main discoveries are that the effect of analysis window length on classification accuracy is practically independent of the number of electrodes for all participant groups; window overlap has no direct influence on classifier performance, irrespective of the window length, number of channels or limb condition; the type of limb deficiency and the existing channel count influence the reduction in classification error achieved by adding more number of channels; partial-hand amputees outperform trans-radial amputees, with classification accuracies of only 11.3 % below values achieved by able-bodied volunteers.