The implications of alcohol withdrawal syndrome in the perception of the concave mask illusion

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The implications of alcohol withdrawal syndrome in the perception of the concave mask illusion – Bibliographic Review

The concave mask illusion phenomenon is a very important example of a class of stimuli that result in visual inversion of depth. In this phenomenon, the observer at a certain distance perceives a concave face mask as convex. Alcohol is a neurotoxic substance capable of causing several changes in the processing of information by the brain, among them, decision making. When the degree of dependence is severe, when stopping or reducing the abusive consumption of alcohol, a set of psychological and organic symptoms may appear, including the alcohol withdrawal syndrome (ASA), which is characterized by a set of physical and psychological signs and symptoms. cognitive disorders, which vary in intensity and severity. Our objective was to carry out a review of the literature on the subject, searching in indexed databases in the period of ten years (2011-2021), where five studies were found. The results obtained found a deficit among alcoholics during moderate SAA in the ability to perform monocular inversion of concave mask depth. In the group of alcoholics with mild AAS, the results were contradictory. The concave mask illusion proved to be a valid tool to reveal the damage caused by moderate SAA to monocular depth inversion. New investigations need to be carried out, given the scarcity of information about this phenomenon, especially in the monocular condition of observation, in addition to the important consideration of the observer’s decision-making processes in the face of the observation of objects based on the Signal Detection Theory (TDS)