'Thought-controlled' wheelchair unveiled

Scientists in Switzerland have devised a prototype "thought-controlled" wheelchair.

The chair can be guided by brain signals which are detected by a cap worn by the user and interpreted by a computer.

Here, the researchers behind it discuss and demonstrate the wheelchair at their facilities at the École Polytechnique Fédérale de Lausanne in Switzerland.

Details of the work have been presented to the annual conference of the American Association for the Advancement of Science in Washington DC.

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