1
|
Tacca N, Baumgart I, Schlink BR, Kamath A, Dunlap C, Darrow MJ, Colachis Iv S, Putnam P, Branch J, Wengerd L, Friedenberg DA, Meyers EC. Identifying alterations in hand movement coordination from chronic stroke survivors using a wearable high-density EMG sleeve. J Neural Eng 2024; 21:046040. [PMID: 39008975 DOI: 10.1088/1741-2552/ad634d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2024] [Accepted: 07/15/2024] [Indexed: 07/17/2024]
Abstract
Objective.Non-invasive, high-density electromyography (HD-EMG) has emerged as a useful tool to collect a 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 as biomarkers. However, previous studies have largely explored these EMG features in isolation with individual electrodes to assess gross movements, limiting their potential clinical utility. This study aims to predict hand function of stroke survivors by combining interpretable features extracted from a wearable HD-EMG forearm sleeve.Approach.Here, able-bodied (N= 7) and chronic stroke subjects (N= 7) performed 12 functional hand and wrist movements while HD-EMG was recorded using a wearable sleeve. A variety of HD-EMG features, or views, were decomposed to assess alterations in motor coordination.Main Results.Stroke subjects, on average, had higher co-contraction and reduced muscle coupling when attempting to open their hand and actuate their thumb. Additionally, muscle synergies decomposed in the stroke population were relatively preserved, with a large spatial overlap in composition of matched synergies. Alterations in synergy composition demonstrated reduced coupling between digit extensors and muscles that actuate the thumb, as well as an increase in flexor activity in the stroke group. Average synergy activations during movements revealed differences in coordination, highlighting overactivation of antagonist muscles and compensatory strategies. When combining co-contraction and muscle synergy features, the first principal component was strongly correlated with upper-extremity Fugl Meyer hand sub-score of stroke participants (R2= 0.86). Principal component embeddings of individual features revealed interpretable measures of motor coordination and muscle coupling alterations.Significance.These results demonstrate the feasibility of predicting motor function through features decomposed from a wearable HD-EMG sleeve, which could be leveraged to improve stroke research and clinical care.
Collapse
Affiliation(s)
- Nicholas Tacca
- Neurotechnology, Battelle Memorial Institute, Columbus, OH, United States of America
| | - Ian Baumgart
- Neurotechnology, Battelle Memorial Institute, Columbus, OH, United States of America
| | - Bryan R Schlink
- Neurotechnology, Battelle Memorial Institute, Columbus, OH, United States of America
| | - Ashwini Kamath
- Neurotechnology, Battelle Memorial Institute, Columbus, OH, United States of America
| | - Collin Dunlap
- Neurotechnology, Battelle Memorial Institute, Columbus, OH, United States of America
| | - Michael J Darrow
- Neurotechnology, Battelle Memorial Institute, Columbus, OH, United States of America
| | - Samuel Colachis Iv
- Neurotechnology, Battelle Memorial Institute, Columbus, OH, United States of America
| | - Philip Putnam
- Neurotechnology, Battelle Memorial Institute, Columbus, OH, United States of America
| | - Joshua Branch
- Neurotechnology, Battelle Memorial Institute, Columbus, OH, United States of America
| | - Lauren Wengerd
- Neurotechnology, Battelle Memorial Institute, Columbus, OH, United States of America
- NeuroTech Institute, The Ohio State University, Columbus, OH, United States of America
| | - David A Friedenberg
- Neurotechnology, Battelle Memorial Institute, Columbus, OH, United States of America
| | - Eric C Meyers
- Neurotechnology, Battelle Memorial Institute, Columbus, OH, United States of America
| |
Collapse
|
2
|
Jarque-Bou NJ, Vergara M, Sancho-Bru JL. Does Exerting Grasps Involve a Finite Set of Muscle Patterns? A Study of Intra- and Intersubject Variability of Forearm sEMG Signals in Seven Grasp Types. IEEE Trans Neural Syst Rehabil Eng 2024; 32:1505-1514. [PMID: 38551830 DOI: 10.1109/tnsre.2024.3383156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/10/2024]
Abstract
Surface Electromyography (sEMG) signals are widely used as input to control robotic devices, prosthetic limbs, exoskeletons, among other devices, and provide information about someone's intention to perform a particular movement. However, the redundant action of 32 muscles in the forearm and hand means that the neuromotor system can select different combinations of muscular activities to perform the same grasp, and these combinations could differ among subjects, and even among the trials done by the same subject. In this work, 22 healthy subjects performed seven representative grasp types (the most commonly used). sEMG signals were recorded from seven representative forearm spots identified in a previous work. Intra- and intersubject variability are presented by using four sEMG characteristics: muscle activity, zero crossing, enhanced wavelength and enhanced mean absolute value. The results confirmed the presence of both intra- and intersubject variability, which evidences the existence of distinct, yet limited, muscle patterns while executing the same grasp. This work underscores the importance of utilizing diverse combinations of sEMG features or characteristics of various natures, such as time-domain or frequency-domain, and it is the first work to observe the effect of considering different muscular patterns during grasps execution. This approach is applicable for fine-tuning the control settings of current sEMG devices.
Collapse
|
3
|
Perrey S. Grand challenges in physical neuroergonomics. FRONTIERS IN NEUROERGONOMICS 2023; 4:1137854. [PMID: 38234495 PMCID: PMC10790944 DOI: 10.3389/fnrgo.2023.1137854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Accepted: 01/30/2023] [Indexed: 01/19/2024]
Affiliation(s)
- Stéphane Perrey
- EuroMov Digital Health in Motion, Univ Montpellier, IMT Mines Ales, Montpellier, France
| |
Collapse
|