Noradrenergic deficits contribute to apathy in Parkinson's disease through the precision of expected outcomes. - Frank H. Hezemans; Noham Wolpe; Claire O'Callaghan; Rong Ye; Catarina Rua; P. Simon Jones; Alexander G. Murley; Negin Holland; Ralf Regenthal; Kamen A. Tsvetanov; Roger A. Barker; Caroline H. Williams-Gray; et al. (PLoS Comput. Biol., 2022)