A prototype of a device that enables people with motor disabilities to communicate with just their thoughts was on display at the Medtech Conference in Stuttgart, Germany.
A team from IMEC, the Holst Center, and the Katholieke Universiteit Leuven developed the Mind Speller as a portable cap, which positions electrodes in key areas on the head to capture electroencephalogram (EEG) signals. A portable device connected to the cap includes a proprietary eight-channel EEG-chip to process the EEG signals, a microcontroller to digitize the EEG signals, and a 2.4-GHz radio to transmit EEG signals wirelessly to a nearby PC. The team developed signal processing algorithms that enable the PC to interpret brain waves and spell words and phrases.
The Mind Speller can be adjusted for different people suffering from paralysis or speech or language disorders. IMEC is making the Mind Speller easier to use by adapting it to work with dry electrodes.
From EE Times
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