so here is a patient who's been given a piece of paper and asked to findll the lineon here. cross out all theines you n. d u can see that she's found half of them on this sheet of paper. >> and they're all on the right. >> all on the right. now here there are only these lines. but now she has been given something more difficult. so here she has to make a much finer discrimination. she's got these targets which are these little circles with spokes. but all of these targets, there are 60 of them on here are embedded amongst a cluttered field of distcting information. and when you hav more competition, you get more neglect. so the greater the competition for selection, the less, the greater the inattention you find in these patients. >> and the definition of neglect here is the idea that it doesn't, it doesn't get your attention. >> yeah, that's right. >> indeed. >> it also makes thepoint that you made last time, how much relearn about the normal functioning of the brain. it's amazing. amazing. in fact, in the old days as you pointed out, all that we really knew of brain functio