. >> so you are saying that oxy tocin, the oxytocin that helps with the bonding and the prairie volesof that. >> yes. >> stephen: so if you have a man who is a total horn dog and always sleeping around, if you gave him some oxy tocin would he settle down with the right woman? >> well, it is an interesting question which we really don't know-- we don't actually know the answer to. >> stephen: have we tried it on humans yet. >> yes, we have. >> stephen: and what happens. >> here is the interesting thing. and one of the most striking findings it is that does seem to have an effect on levels of trust. and so that individuals who have oxytocin administered to them will show greater trusting behavior in a particular sort of situation or game. >> stephen: when you say the self as brain, i think of my soul as myself, are you saying that i don't have soul? >> (applause) i don't know much about our nervous system but i know you have some nerve to come on stable. patricia, thank you very much for joining me. (cheers and applause) >> stephen: the book is touching a nerve. and she did. we'llcia ch