Table 1.
Demographic, clinical and neuropsychological characteristics of schizophrenia patients and healthy controls.
Table 2.
Mean (SD) amplitudes and latencies to duration and frequency deviants for schizophrenia patients and healthy controls.
Figure 1.
Grand averages of responses to standard and deviant tones and the resulting difference waveforms.
Top: Frequency deviants in controls (A) and patients (B); bottom: Duration deviants in controls (C) and patients (D).
Figure 2.
28 channel EEG amplitude distributions and comparison of the between-group MMN waveforms.
Scalp electrode maps of MMN to frequency deviant (A, B) and duration deviant tones (D, E) in controls (A, D) and patients (B, E). MMN waveforms of patients and controls to frequency (C) and duration deviant tones (F), both at Fz are shown on the right.
Figure 3.
Diagrams of group means and standard errors.
MMN amplitudes to frequency (A) and duration deviants (B) are presented for both groups at midline electrode sites.
Figure 4.
Linear associations between MMN latency and patient's verbal memory performance.
Scatterplots of immediate (A) and delayed (B) verbal memory performance score against MMN amplitude to frequency deviants at Fz and FCz, respectively.
Figure 5.
Positive symptom scores and MMN amplitude.
Scatterplot of PANSS positive symptoms against MMN amplitude to duration deviants at FCz.