PMID- 21695206 OWN - NLM STAT- MEDLINE DCOM- 20111102 LR - 20240316 IS - 1932-6203 (Electronic) IS - 1932-6203 (Linking) VI - 6 IP - 6 DP - 2011 TI - Brain-computer interface based on generation of visual images. PG - e20674 LID - 10.1371/journal.pone.0020674 [doi] LID - e20674 AB - This paper examines the task of recognizing EEG patterns that correspond to performing three mental tasks: relaxation and imagining of two types of pictures: faces and houses. The experiments were performed using two EEG headsets: BrainProducts ActiCap and Emotiv EPOC. The Emotiv headset becomes widely used in consumer BCI application allowing for conducting large-scale EEG experiments in the future. Since classification accuracy significantly exceeded the level of random classification during the first three days of the experiment with EPOC headset, a control experiment was performed on the fourth day using ActiCap. The control experiment has shown that utilization of high-quality research equipment can enhance classification accuracy (up to 68% in some subjects) and that the accuracy is independent of the presence of EEG artifacts related to blinking and eye movement. This study also shows that computationally-inexpensive bayesian classifier based on covariance matrix analysis yields similar classification accuracy in this problem as a more sophisticated Multi-class Common Spatial Patterns (MCSP) classifier. FAU - Bobrov, Pavel AU - Bobrov P AD - Institute of Higher Nervous Activity and Neurophysiology of Russian Academy of Sciences, Moscow, Russia. FAU - Frolov, Alexander AU - Frolov A FAU - Cantor, Charles AU - Cantor C FAU - Fedulova, Irina AU - Fedulova I FAU - Bakhnyan, Mikhail AU - Bakhnyan M FAU - Zhavoronkov, Alexander AU - Zhavoronkov A LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20110610 PL - United States TA - PLoS One JT - PloS one JID - 101285081 SB - IM MH - Adult MH - Artifacts MH - Bayes Theorem MH - Blinking/physiology MH - Brain MH - Electrodes MH - Electroencephalography MH - Electrooculography MH - Eye Movements/physiology MH - Humans MH - Imagination/*physiology MH - Male MH - *User-Computer Interface MH - Vision, Ocular/*physiology MH - Young Adult PMC - PMC3112189 COIS- Competing Interests: The authors have declared that no competing interests exist. EDAT- 2011/06/23 06:00 MHDA- 2011/11/04 06:00 PMCR- 2011/06/10 CRDT- 2011/06/23 06:00 PHST- 2010/11/16 00:00 [received] PHST- 2011/05/10 00:00 [accepted] PHST- 2011/06/23 06:00 [entrez] PHST- 2011/06/23 06:00 [pubmed] PHST- 2011/11/04 06:00 [medline] PHST- 2011/06/10 00:00 [pmc-release] AID - PONE-D-10-04961 [pii] AID - 10.1371/journal.pone.0020674 [doi] PST - ppublish SO - PLoS One. 2011;6(6):e20674. doi: 10.1371/journal.pone.0020674. Epub 2011 Jun 10.