?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.aufirst=Maura+L.&rft.aulast=Furey&rft.au=Furey%2C+Maura+L.&rft.btitle=Neuroimage&rft.title=Cholinergic+Enhancement+during+Working+Memory+Eliminates+Regional+Cerebral+Blood+Flow+(rCBF)+Modulation+Associated+with+Task+Difficulty+in+Prefrontal+Cortex&rft.date=2003&rft.genre=proceeding