Miguel Nicolelis

Even two of humanity's most intimate possessions - a sense of self and a body image - are fluid, highly modifiable creations of the brain's mischievous deployment of electricity and a handful of chemicals. They both can change or be changed on less than a second's notice.

It's the first time an exoskeleton has been controlled by brain activity and offered feedback to the patients. Doing a demonstration in a stadium is something very much outside our routine in robotics. It's never been done before.

We want to galvanize people's imaginations. With enough political will and investment, we could make wheelchairs obsolete.

We cannot even predict what kinds of emergent properties would appear when animals begin interacting as part of a brain-net. In theory, you could imagine that a combination of brains could provide solutions that individual brains cannot achieve by themselves.

With its billions of interconnected neurons, whose interactions change from millisecond to millisecond, the human brain is an archetypal complex system.