In "The Hidden Spring," our guest Mark Solms takes us on the journey of Feelings. Feelings are difficult to research because they are inherently subjective, but If we exclude feelings from our account of the brain, we will never understand how it works. You tell us, to a fantastic degree, neuroscientists searching for an explanation of consciousness have ignored feelings. Mark Solms takes us on an exploration of Feelings and the work of his friend and collaborator, Jaak Panksepp. We cover Seeking, Play and Fear.