?url_ver=Z39.88-2004&rft_id=10.1162%2Fjocn.2008.20092&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aulast=Furey&rft.au=Furey%2C+Maura+L.&rft.aufirst=Maura+L.&rft.volume=20&rft.title=Journal+of+Cognitive+Neuroscience&rft.pages=1342-1353&rft.issue=7&rft.issn=0898-929X&rft.date=2008&rft.atitle=Cholinergic+Enhancement+Eliminates+Modulation+of+Neural+Activity+by+Task+Difficulty+in+the+Prefrontal+Cortex+during+Working+Memory&rft.genre=article