Professor Paul Fletcher, a psychiatrist and cognitive neuroscientist, explores how belief and perception interact, and how this relationship can break down in psychosis. He argues that perception and belief are inseparable, as even healthy minds interpret the world through prior experience.

Collaborating with game developers Ninja Theory and people with lived experience of psychosis, Paul uses video game design for representation and treatment in psychiatry. The first game, Hellblade: Senua’s Sacrifice, won five BAFTAs and a Royal College of Psychiatrists award for its portrayal of mental illness. Its sequel, Senua’s Saga: Hellblade II, earned Best Technical Achievement at the 2025 BAFTA Games Awards. The team is now developing a series of interactive experiences to help people manage stress.