Philopsopher Noga Arikha spent 18 months at the Pitié-Salpêtière hospital in Paris, studying what happens when the mind goes wrong – and how our physical experiences inform our identities. Weaving together stories of her subjects’ troubles, from Vanessa who wakes from a coma having forgotten ten years of her life to Thomas, who no longer knows how to answer questions, in The Ceiling Outside Arikha draws on cutting-edge research and insights from neuroscience philosophy and psychology as she attempts to understand how deeply interconnected are our minds and bodies. In conversation with author Lisa Appignanesi.