OBJECTIVE: Given recent reports of differences between mismatch negativity (MMN) elicited by always novel sounds (novelty-elicited MMN) and that elicited by repeated rare deviants (conventional MMN), we investigated novelty-elicited MMN and P3a in patients with schizophrenia before and after a nonstandardized inpatient treatment. DESIGN: Electrophysiological and clinical assessment of patients on admission and discharge from hospital. Assessment of control subjects on 2 sessions. SETTING: Inpatient treatment in a psychiatric university hospital. SUBJECTS: 20 patients with schizophrenia and 21 healthy control subjects of similar age and sex. Selection of patients with first- to third-episode schizophrenia. OUTCOME MEASURES: Early and late component MMN amplitudes and latencies, P3a amplitudes and latencies, Positive and Negative Syndrome Scale (PANSS), Global Assessment of Functioning (GAF), Extrapyramidal Symptom Scale (EPS), Abnormal Involuntary Movement Scale (AIMS) and chlorpromazine equivalents. RESULTS: In patients with schizophrenia, novelty-elicited MMN was unimpaired on admission, and there was a statistically significant reduction of the late MMN component with treatment. Improvements in symptom expression were associated with increased latencies of the early MMN component. CONCLUSION: Results indicate differences in information processing between conventional and novelty-elicited MMN. Some components of the novelty-elicited MMN might be more state dependent than those of the conventional MMN.
OBJECTIVE: Given recent reports of differences between mismatch negativity (MMN) elicited by always novel sounds (novelty-elicited MMN) and that elicited by repeated rare deviants (conventional MMN), we investigated novelty-elicited MMN and P3a in patients with schizophrenia before and after a nonstandardized inpatient treatment. DESIGN: Electrophysiological and clinical assessment of patients on admission and discharge from hospital. Assessment of control subjects on 2 sessions. SETTING: Inpatient treatment in a psychiatric university hospital. SUBJECTS: 20 patients with schizophrenia and 21 healthy control subjects of similar age and sex. Selection of patients with first- to third-episode schizophrenia. OUTCOME MEASURES: Early and late component MMN amplitudes and latencies, P3a amplitudes and latencies, Positive and Negative Syndrome Scale (PANSS), Global Assessment of Functioning (GAF), Extrapyramidal Symptom Scale (EPS), Abnormal Involuntary Movement Scale (AIMS) and chlorpromazine equivalents. RESULTS: In patients with schizophrenia, novelty-elicited MMN was unimpaired on admission, and there was a statistically significant reduction of the late MMN component with treatment. Improvements in symptom expression were associated with increased latencies of the early MMN component. CONCLUSION: Results indicate differences in information processing between conventional and novelty-elicited MMN. Some components of the novelty-elicited MMN might be more state dependent than those of the conventional MMN.
Authors: Y Hirayasu; G F Potts; B F O'Donnell; J S Kwon; H Arakaki; S J Akdag; J J Levitt; M E Shenton; R W McCarley Journal: Am J Psychiatry Date: 1998-09 Impact factor: 18.112
Authors: Michael Avissar; Shanghong Xie; Blair Vail; Javier Lopez-Calderon; Yuanjia Wang; Daniel C Javitt Journal: Schizophr Res Date: 2017-07-11 Impact factor: 4.939
Authors: Carol Jahshan; Jonathan K Wynn; Kristopher I Mathis; Lori L Altshuler; David C Glahn; Michael F Green Journal: Bipolar Disord Date: 2012-05 Impact factor: 6.744
Authors: Robert D Oades; Nele Wild-Wall; Stephanie A Juran; Jan Sachsse; Ljubov B Oknina; Bernd Röpcke Journal: BMC Psychiatry Date: 2006-02-08 Impact factor: 3.630
Authors: Bernhard W Müller; Michael Specka; Nicolai Steinchen; Dieter Zerbin; Ernst Lodemann; Thomas Finkbeiner; Norbert Scherbaum Journal: BMC Psychiatry Date: 2007-11-06 Impact factor: 3.630
Authors: Christian Kärgel; Gudrun Sartory; Daniela Kariofillis; Jens Wiltfang; Bernhard W Müller Journal: PLoS One Date: 2014-04-16 Impact factor: 3.240
Authors: W Ross Fulham; Patricia T Michie; Philip B Ward; Paul E Rasser; Juanita Todd; Patrick J Johnston; Paul M Thompson; Ulrich Schall Journal: PLoS One Date: 2014-06-20 Impact factor: 3.240