All In The Mind

Claudia Hammond talks to Professor Christopher French from Goldsmiths, University of London about the strange phenomenon of sleep paralysis. As many as 1 in 20 people will experience vivid hallucinations while falling asleep or waking up while also completely unable to move. People also describe a very powerful sense of fear and the feeling of being crushed or that an intruder or something supernatural is there with them. Despite being relatively common, this sleep anomaly is little understood. Even less well known or understood is the frightening experience of 'Exploding Head Syndrome' where someone perceives abrupt and very loud noises when going to sleep or waking up. Also can a robot deliver therapy via your smartphone? Claudia talks to Alison Darcy - Stanford University researcher who's created Woebot - an artificially intelligent chatbot designed to treat depression. Woebot, uses cognitive-behavioural therapy and is available via Facebook messenger. Alison explains how it works and that it's not a repla