Neuroscientiston why touch is the sense that most defines us as humans

David J. Linden is Professor of Neuroscience at Johns Hopkins University in Baltimore. He has been reimagining the hierarchy of the human body, and argues that touch is the sense which defines us as humans, intrinsically linking with our emotions, and shaping our sense of self.

David talks to Ian Sample about how we can change our brain's touch maps, how to give the perfect caress, and what can we do about itching?

Hannah Devlin joins us to look at new research suggesting a way to overcome pain, and to consider the latest work looking into King Richard III's genealogy.

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