Brain-controlled wheelchair: Moving the motionless

While Vaish and his team have been working on brain sensors for close to five years, the concept of a brain-controlled wheelchair struck him last year. Once an active government employee, Prem Das is now not able to leave his bed even for a moment. He suffered complete paralysis in August 2014. Since then, he is undergoing physiotherapy, but still is unable to move on his own.
There are thousands of people like Das in India. While their cure depends on multiple treatments—and sometimes su