Science & technology | Moving moments

Analysing brain signals to let a patient control his arm

Implants and algorithms offer hope for the paralysed

Mr Kochevar eats his lunch

DURING a 250km (150-mile) bike ride for charity in Ohio, William Kochevar found himself cycling behind a post-office van when it pulled over to make deliveries. Distracted and tired, Mr Kochevar did not brake in time. The accident, in 2006, left him paralysed from the shoulders down. Now, with the help of electrodes that transmit signals from his brain to his muscles, he has been able to grasp a fork and feed himself for the first time in over a decade. The procedure that allowed Mr Kochevar to achieve the feat is reported in the Lancet this week.

This article appeared in the Science & technology section of the print edition under the headline “Moving moments”

The negotiator

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