Fig. 4.

(A) Mean ± SE percent correct responses per 80-trial load on the N-back for schizophrenia patients who received placebo (SZ-PLC) or DCS (SZ-DCS) and performed above chance. *SZ-DCS performed significantly better than SZ-PLC during the 2-back. Inset shows percent correct responses when all SZ-PLC (n = 20) and SZ-DCS (n = 23) were included. Mean ± SE percent correct responses per 80-trial blocks for the (B) weather prediction task (WPT) and (C) information integration task (IIT) for SZ-PLC and SZ-DCS.