Abnormal N400 Semantic Priming Effect May Reflect Psychopathological Processes in Schizophrenia: A Twin Study

Figure 1

The lexical decision task. Prior to the trial, the computer screen was blank. A trial started with a fixation point () presented for 700 ms followed by presentation of the prime for 250 ms which was immediately succeeded by the presentation of the target word. The target was displayed for 2 s, after which the screen went blank for 1.5 s.