The P300 in alcohol use disorder: A meta-analysis and meta-regression

Progress in Neuro-psychopharmacology & Biological Psychiatry
Ajna Hamidovic, Yohyoh Wang

Abstract

The P300 ERP component is a marker of reduced capacity in alcohol use disorder (AUD) to engage attentional mechanisms and update memory representations. No meta-analysis to date has been completed comparing effect size estimates of auditory vs. visual stimuli in AUD. In addition, there is a lack of consensus on whether the P3b in women is reduced, or whether the P3a - an earlier, more frontally distributed component - is reduced in AUD. Strict inclusion criteria and data-analysis plans were implemented. Eligible studies needed to diagnose AUD using DSM or ICD-10 and exclude patients with any psychiatric co-morbidities. Data analysis was completed using a refined variance estimator of the random effects model. Effect size estimates were large for both auditory (Hedges' g = 1.01, p = .056) and visual (Hedges' g = 0.77, p = .040) P300 amplitudes, but only marginally significant for the auditory modality. Auditory P300 latency was significantly increased in AUD patients (Hedges' g = 0.73, p = .027). The moderator analysis did not show significant sex differences for either auditory (p = .97) or visual (p = .45) P3b. Finally, the P3a was not reduced in patients with AUD (Hedges' g = 1.01; p = .59). This meta-analysis clarifies impor...Continue Reading

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Alcohol Use Disorder

Alcohol use disorder involves a pattern of alcohol consumption that includes compulsive use and a loss of control over intake of alcohol. The impact on physical health, socioeconomic factors, and psychiatric health is profound. Find the latest research on alcohol use disorder here.

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