2008/9/16 Terren Suydam <[EMAIL PROTECTED]>: > > Hi Will, > > Such an interesting example in light of a recent paper, which deals with > measuring the difference between activation of the visual cortex and blood > flow to the area, depending on whether the stimulus was "subjectively > invisible". If the result can be trusted, it shows that blood flow to the > cortex is correlated with whether the stimulus is being perceived or not, as > opposed to the neural activity, which does not change... see a discussion > here: > > http://network.nature.com/groups/bpcc/forum/topics/2974 > > In this case then the "reward" that the cortex receives in the form of > nutrients is based somehow on feedback from other parts of the brain involved > with attention. It's like a heuristic that says, "if we're paying attention > to something, we're probably going to keep paying attention to it." > > > Maier A, Wilke M, Aura C, Zhu C, Ye FQ, Leopold DA. Nat Neurosci. 2008 Aug > 24. [Epub ahead of print], Divergence of fMRI and neural signals in V1 during > perceptual suppression in the awake monkey. >
Interesting, I'll have to check it out. Thanks. I really need to keep up with brain research a little better. Will ------------------------------------------- agi Archives: https://www.listbox.com/member/archive/303/=now RSS Feed: https://www.listbox.com/member/archive/rss/303/ Modify Your Subscription: https://www.listbox.com/member/?member_id=8660244&id_secret=114414975-3c8e69 Powered by Listbox: http://www.listbox.com
