An asynchronously controlled EEG-based virtual keyboard: improvement of the spelling rate.
prospective_cohort · Level II
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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 sigma, the number of correctly spelled letters/min, up to sigma = 3.38 (average sigma = 1.99).
Medical subject headings
- Algorithms
- Cerebral Cortex
- Communication Devices for People with Disabilities
- Computer Peripherals
- Electroencephalography
- User-Computer Interface
- Word Processing