Independent brain computer interface control using visual spatial attention-dependent modulations of parieto-occipital alpha

S. P. Kelly, E. Lalor, R. B. Reilly, J. J. Foxe

Research output: Contribution to conferencePaper

28 Scopus citations

Abstract

Parieto-occipital alpha band (8-14Hz) EEG activity was examined during a spatial attention-based brain computer interface paradigm for its potential use as a feature for left/right spatial attention classification. In this paradigm 64-channel EEG data were recorded from subjects who covertly attended to a sequence of letters superimposed on a flicker stimulus in one visual field while ignoring a similar stimulus in the opposite visual field. Increases in alpha band activity were observed over parieto-occipital cortex contralateral to the location of the ignored stimulus, consistent with previous reports, and the subsequent use of alpha band power over bilateral parieto-occipital sites as a feature yielded an average classification accuracy of 73% across 10 subjects, with highest 87% The highest achievable bit rate from these data is 7.5 bits/minute.

Original languageEnglish (US)
Pages667-670
Number of pages4
DOIs
StatePublished - Dec 1 2005
Event2nd International IEEE EMBS Conference on Neural Engineering, 2005 - Arlington, VA, United States
Duration: Mar 16 2005Mar 19 2005

Other

Other2nd International IEEE EMBS Conference on Neural Engineering, 2005
CountryUnited States
CityArlington, VA
Period3/16/053/19/05

Keywords

  • Alpha
  • BCI
  • EEG
  • Gating
  • Spatial selective attention

ASJC Scopus subject areas

  • Engineering(all)

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    Kelly, S. P., Lalor, E., Reilly, R. B., & Foxe, J. J. (2005). Independent brain computer interface control using visual spatial attention-dependent modulations of parieto-occipital alpha. 667-670. Paper presented at 2nd International IEEE EMBS Conference on Neural Engineering, 2005, Arlington, VA, United States. https://doi.org/10.1109/CNE.2005.1419713