“…Two age-matched controls were excluded because of low MMSE scores, leaving 18 control participants in the analyses. PD ON were tested within 3 hr of their last medication dose; PD OFF were withdrawn overnight from their medications and tested at least 14 hr after their last medication dose, following prior studies (Foerde, Braun, & Shohamy, 2013;Shohamy, Myers, Geghman, Sage, & Gluck, 2006;Frank, Seeberger, & O'Reilly, 2004;Cools, Barker, Sahakian, & Robbins, 2001). As is common clinical practice, most patients were being treated with a combination of L-dopa and dopamine agonists.…”