Impulsiveness and insula activation during reward anticipation are associated with genetic variants in GABRA2 in a family sample enriched for alcoholism. - Villafuerte, S; Heitzeg, M M; Foley, S; Wendy Yau, W-Y; Majczenko, K; Zubieta, J-K; Zucker, R A; Burmeister, M (Molecular Psychiatry, 2012)