Fig. 3.

Plots comparing the predicted and observed ERPs over all channels, for each of the four grand average responses (left panel) including: Controls-predictable targets (1), Controls-unpredictable targets (2), Schizophrenia-predictable targets (3), and Schizophrenia-unpredictable targets (4). Principal spatial modes 1 and 3 (left panel) show a pronounced difference in the evoked responses of normal subjects to predictable and unpredictable targets (compare red and blue traces) around 300 to 400 ms, while this difference is markedly attenuated in the schizophrenia patients (green and magenta).