A team of cognitive neuroscientists at the University of Zurich, has found that ancient Aztec “skull whistles” found in gravesites are able to instill fear in modern people. In their study, published in the journal Communications Psychology, the group recorded the neural and psychological responses of volunteers as they listened to the screams produced by the whistles. A team of cognitive neuroscientists at the University of Zurich, has found that ancient Aztec “skull whistles” found in gravesites are able to instill fear in modern people. In their study, published in the journal Communications Psychology, the group recorded the neural and psychological responses of volunteers as they listened to the screams produced by the whistles. Archaeology Phys.org – latest science and technology news stories