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Korean J Schizophr Res > Volume 16(2); 2013 > Article
Korean Journal of Schizophrenia Research 2013;16(2):98-106.
DOI: https://doi.org/10.16946/kjsr.2013.16.2.98    Published online October 31, 2013.
Association between Mismatch Negativity and Functional Status in Patients with Schizophrenia.
Min Ah Kim, Sung Nyun Kim, Min Hee Lee, Suji Lee, Jun Soo Kwon
1Department of Psychiatry, Seoul National University College of Medicine, Seoul, Korea. kwonjs@snu.ac.kr
2Institute of Human Behavioral Sciences, Seoul National University-Medical Research Center, Seoul, Korea.
3Department of Brain and Cognitive Science-World Class University Program, Seoul National University College of Natural Science, Seoul, Korea.
Abstract
OBJECTIVES
It has been constantly reported that mismatch negativity (MMN) is impaired in patients with schizophrenia. However, the mechanism which relates impaired MMN and schizophrenia is not clear yet. The aim of this study is to investigate the association between MMN and clinical variables including functional status in patients with schizophrenia.
METHODS
The present study assessed MMN using passive auditory oddball task in 26 patients with schizophrenia and 48 healthy controls. Repeated measures Analysis of Variance with age as a covariate was carried out for comparing peak amplitude and latency of MMN at 8 central line electrodes (FPz, Fz, FCz, Cz, CPz, Pz, POz, Oz) across groups. Pearson's correlation was performed to reveal the relationship between MMN and clinical variables including neurocognitive test results and the Global Assessment of Functioning score.
RESULTS
MMN amplitude was significantly reduced in patients with schizophrenia compared with healthy controls. Pearson's correlation showed that subsets of short form of Korean Wechsler Adult Intelligence Scale scores and GAF scores were associated with MMN amplitude in patients with schizophrenia.
CONCLUSION
These findings suggest that MMN amplitude is associated with current functional status including cognitive function in patients with schizophrenia.
Key Words: Event related potential · Mismatch negativity · Schizophrenia · Cognitive function · Functional status


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