Mismatch Negativity and Auditory Processing in Psychotic Disorders

Mismatch negativity (MMN) is an automatic, pre-attentive neural response to unexpected changes in a sequence of auditory stimuli. In psychotic disorders, and particularly in schizophrenia, MMN amplitude is reliably attenuated, reflecting deficits in early sensory memory, predictive processing and synaptic plasticity. These impairments correlate with cognitive dysfunction, psychosocial disability and functional outcome. Research over the past decade has elucidated the cortical and neurotransmitter mechanisms underlying MMN generation, highlighting the role of N-methyl-D-aspartate receptor hypofunction and aberrant excitatory–inhibitory balance. As a translatable biomarker, MMN offers promise for early detection, stratification of risk in at-risk individuals, monitoring of disease progression and assessment of novel therapeutics. Global studies underscore its stability across cultures and suitability for incorporation into precision psychiatry frameworks, aiming to refine clinical trials and personalise intervention strategies.

Research from Nature Portfolio

A recent investigation compared visual and acoustic MMN within the same patient cohort, revealing that acoustic mismatch responses are more profoundly diminished in schizophrenia than their visual counterparts. Recording EEG in matched groups of patients and healthy controls, the study demonstrated significant group differences for auditory deviance but only limited differences for visual patterns. These findings reinforce the clinical utility of acoustic MMN as a more reliable biomarker and suggest modality-specific predictive processing abnormalities. The work also underscores the importance of direct within-subject comparisons when evaluating sensory biomarkers in psychotic disorders.

Mismatch Negativity and Auditory Processing in Psychotic Disorders publication trend

The graph below shows the total number of articles in mismatch negativity and auditory processing in psychotic disorders across all publications each year (not limited to Nature Index journals).

Technical terms

Mismatch Negativity (MMN): An event-related potential reflecting automatic detection of auditory deviations from a regular pattern.

Event-Related Potential (ERP): Time-locked electrical brain responses measured via EEG following sensory, cognitive or motor events.

Pre-attentive Processing: Neural processing of sensory information that occurs without conscious attention.

Endophenotype: A heritable biomarker that links genetic variation to clinical manifestations of a disorder.

Auditory Deviance Detection: The neural mechanism by which the brain identifies unexpected changes in auditory stimuli.

References

1. Mismatch Negativity as a “Translatable” Brain Marker Toward Early Intervention for Psychosis: A Review. Frontiers in Psychiatry (2013).
2. Cortical substrates and functional correlates of auditory deviance processing deficits in schizophrenia. NeuroImage Clinical (2014).
3. Impaired prefrontal synaptic gain in people with psychosis and their relatives during the mismatch negativity. Human Brain Mapping (2015).
4. A comparison of visual and acoustic mismatch negativity as potential biomarkers in schizophrenia. Scientific Reports (2024).
5. Clarifying directional dependence among measures of early auditory processing and cognition in schizophrenia: leveraging Gaussian graphical models and Bayesian networks. Psychological Medicine (2024).
6. Electrophysiological evidence for abnormal glutamate-GABA association following psychosis onset. Translational Psychiatry (2018).