Differences in P3 amplitudes between schizophrenics and healthy controls vary between the different events presented in a guessing task.


P3 amplitudes were often found to be reduced in schizophrenics, but in varying degree. We studied in a guessing task whether variations of group differences could even be obtained within the same task, by measuring P3 in the potentials evoked by the three qualitatively different events that occurred in each trial. We hypothesized that such variations were… (More)

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