Name
Title | ||
|---|---|---|
Electrocorticographic decoding of ipsilateral reach in the setting of contralateral arm weakness from a cortical lesion. |
Abstract | ||
|---|---|---|
Brain machine interfaces have the potential for restoring motor function not only in patients with amputations or lesions of efferent pathways in the spinal cord and peripheral nerves, but also patients with acquired brain lesions such as strokes and tumors. In these patients the most efficient components of cortical motor systems are not available for BMI control. Here we had the opportunity to investigate the possibility of utilizing subdural electrocorticographic (ECoG) signals to control natural reaching movements under these circumstances. In a subject with a left arm monoparesis following resection of a recurrent glioma, we found that ECoG signals recorded in remaining cortex were sufficient for decoding kinematics of natural reach movements of the nonparetic arm, ipsilateral to the ECoG recordings. The relationship between the subject's ECoG signals and reach trajectory in three dimensions, two of which were highly correlated, was captured with a computationally simple linear model (mean Pearson's r in depth dimension= 0.68, in height= 0.73, in lateral= 0.24). These results were attained with only a small subset of 7 temporal/spectral neural signal features. The small subset of neural features necessary to attain high decoding results show promise for a restorative BMI controlled solely by ipsilateral ECoG signals. |
Year | DOI | Venue |
|---|---|---|
2012 | 10.1109/EMBC.2012.6346869 | EMBC |
Keywords | Field | DocType |
natural reach movements,biomechanics,motor function,nonparetic arm,medical control systems,medical disorders,brain lesions,contralateral arm weakness,neurophysiology,electroencephalography,brain-computer interfaces,bmi control,spinal cord,ecog recordings,simple linear model,medical signal processing,spectral neural signal features,physiological models,temporal neural signal features,cancer,feature extraction,cortical lesion,cortical motor systems,kinematics,signal reconstruction,peripheral nerves,tumors,electrocorticographic decoding,subdural electrocorticographic signals,tumours,strokes,ipsilateral ecog signals,brain machine interfaces,decoding,brain computer interfaces | Brain mapping,Spinal cord,Neuroscience,Lesion,Neurophysiology,Computer science,Brain–computer interface,Motor cortex,Motor system,Electroencephalography | Conference |
Volume | ISSN | ISBN |
2012 | 1557-170X | 978-1-4577-1787-1 |
Citations | PageRank | References |
0 | 0.34 | 0 |
Authors | ||
6 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Guy Hotson | 1 | 0 | 0.68 |
| Matthew S Fifer | 2 | 4 | 3.11 |
| Soumyadipta Acharya | 3 | 73 | 6.64 |
| William S. Anderson | 4 | 10 | 5.52 |
| Nitish V Thakor | 5 | 38 | 9.68 |
| Nathan E Crone | 6 | 4 | 2.83 |