Identifying alterations in hand movement coordination from chronic stroke survivors using a wearable high-density EMG sleeve

• DOI: 10.1088/1741-2552/ad634d
• Publication Date: 2024-07-15T22:26:20Z
• Authors: Nicholas Tacca; Ian Baumgart; Bryan R Schlink; Ashwini Kamath; Collin Dunlap; Michael J Darrow; Samuel Colachis IV; Philip Putnam; Joshua Branch; Lauren Wengerd; David A Friedenberg; Eric C Meyers
• Keywords: Chronic stroke; Functional movement; Stroke

Abstract Objective. Non-invasive, high-density electromyography (HD-EMG) has emerged as a useful tool to collect range of neurophysiological motor information. Recent studies have demonstrated changes in EMG features that occur after stroke, which correlate with functional ability, highlighting their potential use biomarkers. However, previous largely explored these isolation individual electrodes assess gross movements, limiting clinical utility. This study aims predict hand function stroke survivors by combining interpretable extracted from wearable HD-EMG forearm sleeve. Approach. Here, able-bodied ( N = 7) and chronic subjects performed 12 wrist movements while was recorded using A variety features, or views, were decomposed alterations coordination. Main Results. Stroke subjects, on average, had higher co-contraction reduced muscle coupling when attempting open actuate thumb. Additionally, synergies the population relatively preserved, large spatial overlap composition matched synergies. Alterations synergy between digit extensors muscles thumb, well an increase flexor activity group. Average activations during revealed differences coordination, overactivation antagonist compensatory strategies. When first principal component strongly correlated upper-extremity Fugl Meyer sub-score participants R 2 0.86). Principal embeddings measures coordination alterations. Significance. These results demonstrate feasibility predicting through sleeve, could be leveraged improve research care.