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.

There are several patients - there are thousands of patients, tens of thousands of patients, that carry either a stimulator in the brain or in the periphery, in the inner ear, to restore neurological functions or to control diseases like Parkinson's disease.

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

I haven't travelled that much before so this is the first time I get to see the big cities of Europe. I've never even been to US.

The brain needs to have a story; it needs to have a logical screenplay telling where we're coming from and what we're going to.

What I enjoy most is doing something I've never done before.