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鈥楩ear Itself鈥� is a new feature-length documentary that examines the visual techniques and sound effects used over the 100 year history of horror films.
Speaking on the Today programme the film鈥檚 director Charlie Lyne says horror films terrify us because humans can鈥檛 tell the difference between the real thing and 鈥渢his constructed reality that鈥檚 been put in front of us by a film maker鈥�.

Dr Adam Perkins, lecturer in the neurobiology of personality at King鈥檚 College London, explained to Sarah Montague why we enjoy being scared:

鈥淚n animal learning studies they鈥檝e shown that when animals are expecting to get punished and then they don鈥檛 there鈥檚 a kind of rebound effect, we have a鈥� phew!鈥� I think filmmakers鈥� have sort of worked this out for themselves in a less formal way鈥�.

'Fear Itself' premiered on the iPlayer last night.