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Rev Neurol ; 68(4): 137-146, 2019 Feb 16.
Article in Spanish, English | MEDLINE | ID: mdl-30741400

ABSTRACT

INTRODUCTION: Hazardous alcohol consumption (HAC) is a pattern of alcohol use that may result in harm for the user and/or for those around them. Prior research has suggested that HAC and alcohol dependence share some neurophysiological features but differ in others. AIM: To determine whether HAC and alcohol dependence presented different neurophysiological correlates. SUBJECTS AND METHODS: Two hundred subjects were screened for HAC or alcohol dependence. A quantitative electroencephalo-graphic analysis of delta, theta, alpha and beta absolute power, relative power and mean frequency in subjects with HAC but not alcohol dependence, subjects with risk of alcohol dependence and controls was performed. RESULTS: One hundred and fourteen subjects met inclusion criteria. The HAC group presented with higher beta absolute power and relative power, as well as a lower beta mean frequency than the control group, while the group with risk of alcohol dependence presented lower delta absolute power than controls. CONCLUSIONS: HAC and risk of alcohol dependence present different neurophysiological correlates. There is an important effect of the severity of alcohol dependence on neurophysiological correlates of this condition. Our results support the existence of two different types of behavioral disinhibition.


TITLE: El consumo de riesgo de alcohol y el riesgo de dependencia al alcohol presentan correlatos neurofisiologicos diferentes.Introduccion. El consumo de riesgo de alcohol (CRA) es un patron de consumo que puede resultar dañino para el usuario o para los demas. Investigaciones previas sugieren que el CRA y la dependencia al alcohol comparten algunas caracteristicas neurofisiologicas, pero difieren en otras. Objetivo. Determinar si el CRA y la dependencia al alcohol presentan correlatos neurofisiologicos diferentes. Sujetos y metodos. Doscientos sujetos realizaron la prueba de deteccion de CRA y riesgo de dependencia al alcohol (DEP). Se realizo un estudio de electroencefalografia cuantitativa para determinar la potencia absoluta, la potencia relativa y la frecuencia media de las bandas delta, theta, alfa y beta en sujetos con CRA, con DEP y controles. Resultados. Un total de 114 sujetos cumplio los criterios de inclusion. El grupo con CRA presento mayor potencia absoluta, mayor potencia relativa y menor frecuencia media de la banda beta en comparacion con los controles, mientras que el grupo con DEP presento menor potencia absoluta de la banda delta que los controles. Conclusiones. El DEP y el CRA presentan diferentes correlatos neurofisiologicos. Hay un efecto importante de la gravedad de la dependencia al alcohol sobre sus correlatos neurofisiologicos. Nuestros resultados apoyan la existencia de dos tipos distintos de desinhibicion conductual.


Subject(s)
Alcohol Drinking/physiopathology , Alcoholism/physiopathology , Nervous System/physiopathology , Correlation of Data , Female , Humans , Male , Young Adult
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