Means of N1 peak amplitude at site CZ for attended and unattended stimuli of schizophrenia patients, first-degree biological relatives of schizophrenia patients, bipolar patients, first-degree biological relatives of bipolar patients, and nonpsychiatric control participants.
*=LSD post hoc significantly different from control participants.
†= Paired t-test attended stimuli significantly different from unattended stimuli (p<.005).