Abstract
Imagine being able to think, hear, and feel - but not move or communicate. Over 40% of patients diagnosed as vegetative are reclassified as (at least) minimally conscious when assessed by expert teams. This publication presents a device that uses BCI (Brain-Computer Interface) technology for quick and easy assessment of patients suffering a disorder of consciousness, and even provides basic communication with some of them. A BCI detects changes in brain activity induced by the user’s mental activity. The EEG is used to measure brain signals, which are automatically analyzed and classified on a standard laptop. As long as patients have enough cognitive functions to understand spoken messages, they can be trained to use different mental strategies to provide simple YES/NO answers to questions. The system combines three different BCI approaches within one tool: auditory P300, tactile P300, and motor imagery. These approaches work with patients who cannot see, and (in some cases) also cannot hear
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