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Review
. 2023 Dec 16;13(12):1722.
doi: 10.3390/brainsci13121722.

Auditory Steady-State Responses in Schizophrenia: An Updated Meta-Analysis

Inès Zouaoui  1   2 , Alexandre Dumais  1   2   3 , Marc E Lavoie  1   4 , Stéphane Potvin  1   2
Affiliations
Review

Auditory Steady-State Responses in Schizophrenia: An Updated Meta-Analysis

Inès Zouaoui et al. Brain Sci. .

Abstract

This meta-analysis investigates auditory steady-state responses (ASSRs) as potential biomarkers of schizophrenia, focusing on previously unexplored clinical populations, frequencies, and variables. We examined 37 studies, encompassing a diverse cohort of 1788 patients with schizophrenia, including 208 patients with first-episode psychosis, 281 at-risk individuals, and 1603 healthy controls. The results indicate moderate reductions in 40 Hz ASSRs in schizophrenia patients, with significantly greater reductions in first-episode psychosis patients and minimal changes in at-risk individuals. These results call into question the expected progression of ASSR alterations across all stages of schizophrenia. The analysis also revealed the sensitivity of ASSR alterations at 40 Hz to various factors, including stimulus type, level of analysis, and attentional focus. In conclusion, our research highlights ASSRs, particularly at 40 Hz, as potential biomarkers of schizophrenia, revealing varied implications across different stages of the disorder. This study enriches our understanding of ASSRs in schizophrenia, highlighting their potential diagnostic and therapeutic relevance, particularly in the early stages of the disease.

Keywords: ASSR; electroencephalography; gamma rhythm; magnetoencephalography; meta-analysis; schizophrenia.

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Conflict of interest statement

The authors declare no conflict of interest.

Figures

Figure 1
Figure 1
Linear association between age and auditory steady-state response (40 Hz; phase).
See this image and copyright information in PMC

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