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2023, 10th International BCI Meeting, Pages 163-

Long-term effect on EEG sensorimotor responsiveness to motor imagery after a BCI training for stroke rehabilitation (04d Abstract in atti di convegno)

Mongiardini E., Pichiorri F., Colamarino E., Ranieri A., Toppi J., Mattia D., Cincotti F.

Previous studies demonstrated the efficacy of EEG-Brain-Computer Interfaces based on Motor Imagery (MI-BCI) in post stroke functional motor recovery of upper limbs [1]; however, the maintenance of such effects in the long-term is still partially unexplored. Here we tackled this long-term aspect of MI-BCI induced positive effects on rehabilitation outcomes by analyzing an EEG dataset acquired from subacute stroke patients recruited in the longitudinal Randomized Controlled Trial reported in [2]. The oscillatory activity in the EEG beta band known as related to MI tasks within BCI contexts [1], [3], was studied at different time points in two groups of participants one performing MI practice with BCI assistance (BCI group) while the other performing MI training alone (CTRLgroup). [1] F. Pichiorri et al., “Brain-computer interface boosts motor imagery practice during stroke recovery,” Ann. Neurol., vol. 77, no. 5, pp. 851–865, 2015, doi: 10.1002/ana.24390. [2] D. Mattia et al., “The Promotoer, a brain-computer interface-assisted intervention to promote upper limb functional motor recovery after stroke: A study protocol for a randomized controlled trial to test early and long-term efficacy and to identify determinants of response,” BMC Neurol., vol. 20, no. 1, pp. 1–13, 2020, doi: 10.1186/s12883-020-01826-w. [3] F. Pichiorri et al., “Sensorimotor rhythm-based brain-computer interface training: The impact on motor cortical responsiveness,” J. Neural Eng., vol. 8, no. 2, 2011, doi: 10.1088/1741-2560/8/2/025020.
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