Abstract
It is of wide interest to study the brain activity that correlates to the control of brain-computer interface (BCI). In the present study, we have developed an approach to image the cortical rhythmic modulation associated with motor imagery using minimum-norm estimates in the frequency domain (MNEFD). The distribution of cortical sources of mu activity during online control of BCI was obtained with the MNEFD. Contralateral decrease (event-related desynchronization) and ipsilateral increase (event-related synchronization) are localized in the sensorimotor cortex during online control of BCI in a group of human subjects. Statistical source analysis revealed that maximum correlation with movement imagination is localized in sensorimotor cortex.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 425-431 |
| Number of pages | 7 |
| Journal | IEEE Transactions on Neural Systems and Rehabilitation Engineering |
| Volume | 16 |
| Issue number | 5 |
| DOIs | |
| State | Published - Oct 2008 |
Bibliographical note
Funding Information:Manuscript received July 10, 2007; revised October 31, 2007; accepted January 18, 2008. First published August 12, 2008; current version published November 05, 2008. This work was supported in part by the National Institutes of Health (NIH) under Grant RO1EB007920, Grant RO1EB00178, Grant NSF BES-0411898, and Grant NSF BES-0602957, and in part by a grant from the Institute for Engineering in Medicine of the University of Minnesota. The work of H. Yuan was supported by NIH under Training Grant T90 DK070106.
Keywords
- Brain-computer interface (BCI)
- Electroencephalogram (EEG)
- Event-related desynchronization (ERD)
- Event-related synchronization (ERS)
- Motor imagery
- Source analysis