%0 Conference Paper %A Ricciardi, Emiliano %A Pietrini, Pietro %A Rapoport, Stanley I. %A Schapiro, Mark B. %A Furey, Maura L. %B 9th Annual Meeting of the Human Brain Mapping Organization %C New York, USA %D 2003 %F eprints:3321 %I Elsevier %T Effect of healthy aging on the cholinergic modulation of the interaction between prefrontal cortex (PFC) activity and visual working memory (vWM) task difficulty %U http://eprints.imtlucca.it/3321/