Title :
A clinical evaluation of non-invasive motor imagery-based brain-computer interface in stroke
Author :
Ang, Kai ; Guan, Cuntai ; Chua, Karen Geok ; Ang, Beng ; Kuah, Christopher Keong ; Wang, Chuanchu ; Phua, Kok ; Chin, Zheng ; Zhang, Haihong
Author_Institution :
Institute for Infocomm Research, Agency for Science, Technology and Research (A*STAR), 21 Heng Mui Keng Terrace, Singapore 119613
Abstract :
This clinical study investigates whether the performance of hemiparetic stroke patients operating a non-invasive Motor Imagery-based Brain-Computer Interface (MI-BCI) is comparable to healthy subjects. The study is performed on 8 healthy subjects and 35 BCI-naïve hemiparetic stroke patients. This study also investigates whether the performance of the stroke patients in operating MI-BCI correlates with the extent of neurological disability. The performance is objectively computed from the 10×10-fold cross-validation accuracy of employing the Filter Bank Common Spatial Pattern (FBCSP) algorithm on their EEG measurements. The neurological disability is subjectively estimated using the Fugl-Meyer Assessment (FMA) of the upper extremity. The results show that the performance of BCI-naïve hemiparetic stroke patients is comparable to healthy subjects, and no correlation is found between the accuracy of their performance and their motor impairment in terms of FMA.
Keywords :
Brain computer interfaces; Communication channels; Communication system control; Control systems; Councils; Electroencephalography; Extremities; Filter bank; Neural pathways; Spatial filters; Algorithms; Artificial Intelligence; Brain; Case-Control Studies; Evoked Potentials; Humans; Imagination; Movement; Nervous System Diseases; Paresis; Reproducibility of Results; Stroke; User-Computer Interface;
Conference_Titel :
Engineering in Medicine and Biology Society, 2008. EMBS 2008. 30th Annual International Conference of the IEEE
Conference_Location :
Vancouver, BC
Print_ISBN :
978-1-4244-1814-5
Electronic_ISBN :
1557-170X
DOI :
10.1109/IEMBS.2008.4650130