RT Conference Proceedings
T1 Facilitation of completely paralyzed forearm muscle activity in chronic stroke patients
A1 Garcia-Cossio, E.
A1 Birbaumer, N.
A1 Ramos-Murguialday, A.
AB Stroke is the main cause of hemiparesis in developed countries. Very often upper limbs are compromised and the hemiparesis is characterized by abnormal muscle activations especially at the level of the wrist and fingers (distal muscles). In this study we investigated the stability and strength of paretic upper limb muscle activity during different bilateral movements eliciting different postures and muscle recruitment. We recorded surface EMG of 45 severe chronic stroke patients without residual finger extension during six bimanual movements. Sixteen bipolar-EMG electrodes were placed on both upper limbs at the level of proximal and distal areas. We extracted the waveform length from the EMG data, in order to investigate muscle activity level at the paralyzed muscles during all movements. Our results indicated that different positions during multi-joint movements of the upper limb facilitated the contraction of the affected muscles (forearm extensors) involuntarily during the movement in which this activation was not expected (e.g. abduction of the upper arm) in more than 64% of the patients. Here, we show that severe affected chronic stroke patients can induce a higher activation of the paretic muscles of the forearm by changing the upper limb posture. This might be an important hint to design multi-joint coordinated movements involving proximal and distal musculature for stroke motor rehabilitation.
SN 9781467319690
SN 1948-3546
YR 2013
FD 2013
LK https://hdl.handle.net/11556/2551
UL https://hdl.handle.net/11556/2551
LA eng
NO Garcia-Cossio , E , Birbaumer , N & Ramos-Murguialday , A 2013 , Facilitation of completely paralyzed forearm muscle activity in chronic stroke patients . in 2013 6th International IEEE EMBS Conference on Neural Engineering, NER 2013 . , 6696241 , International IEEE/EMBS Conference on Neural Engineering, NER , pp. 1545-1548 , 2013 6th International IEEE EMBS Conference on Neural Engineering, NER 2013 , San Diego, CA , United States , 6/11/13 . https://doi.org/10.1109/NER.2013.6696241
NO conference
DS TECNALIA Publications
RD 26 jul 2024