sentence: We made the following predictions : i ) On the basis of our previous work ( Aloi et al ., 2020 , 2019 ) , we predicted that AUD , rather than CUD , symptomatology level would be inversely associated with RPE signaling within structures involved in instrumental learning ( striatum , vmPFC , dmPFC , ACC , PCC , aIC , iFG ) ; and ( ii ) AUD , rather than CUD , symptomatology level would be particularly inversely associated with RPE signaling to novel stimuli.2 Methods .