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Hazardous alcohol consumption and risk of alcohol dependence present different neurophysiological correlates
W V Herrera-Morales1, L Ramirez-Lugo2, E Santiago-Rodriguez3
1Division de Ciencias de la Salud. Universidad de Quintana Roo, Chetumal, Quintana Roo, Mexico.
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.
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