Reduced mismatch negativity predates the onset of psychosis. - Shaikh, M; Valmaggia, L; Broome, MR; Dutt, A; Lappin, J; Day, F; Woolley, J; Tabraham, P; Walshe, M; Johns, L; Fusar-Poli, P; Howes, O; et al. (Schizophrenia research, 2012)