An Asynchronously Controlled EEG-Based Virtual Keyboard: Improvement of the Spelling Rate
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- 24 May 2004
- journal article
- clinical trial
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Biomedical Engineering
- Vol. 51 (6) , 979-984
- https://doi.org/10.1109/tbme.2004.827062
Abstract
An improvement of the information transfer rate of brain-computer communication is necessary for the creation of more powerful and convenient applications. This paper presents an asynchronously controlled three-class brain-computer interface-based spelling device [virtual keyboard (VK)], operated by spontaneous electroencephalogram and modulated by motor imagery. Of the first results of three able-bodied subjects operating the VK, two were successful, showing an improvement of the spelling rate /spl sigma/, the number of correctly spelled letters/min, up to /spl sigma/=3.38 (average /spl sigma/=1.99).Keywords
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