Cortical imaging of event-related (de)synchronization during online control of brain-computer interface using minimum-norm estimates in frequency domain

Han Yuan, Alexander Doud, Arvind Gururajan, Bin He

Research output: Contribution to journalArticlepeer-review

83 Scopus citations

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 languageEnglish (US)
Pages (from-to)425-431
Number of pages7
JournalIEEE Transactions on Neural Systems and Rehabilitation Engineering
Volume16
Issue number5
DOIs
StatePublished - Oct 2008

Keywords

  • Brain-computer interface (BCI)
  • Electroencephalogram (EEG)
  • Event-related desynchronization (ERD)
  • Event-related synchronization (ERS)
  • Motor imagery
  • Source analysis

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