title: Impaired binocular depth inversion in patients with alcohol withdrawal.
abstract: Binocular depth inversion represents an illusion of visual perception. Such inversion does not occur in all cases, especially when objects with a higher degree of familiarity (e.g. photographs of faces) are displayed. Cognitive factors are assumed to override the binocular disparity cues of stereopsis. We tested the hypothesis that during alcohol withdrawal the human CNS is unable to correct the implausible perceptual hypothesis. Measurements of binocular depth inversion in perception of 3D objects were performed in 10 patients with mild alcohol withdrawal and in 11 healthy volunteers. The binocular depth inversion scores were highly elevated in the patients group in comparison to the healthy volunteers. The data demonstrates a strong impairment of binocular depth inversion in alcohol withdrawal and support the view that alcohol withdrawal may be accompanied by a disorganization of the interaction between sensory input and generation of perceptual hypotheses.
authors.affiliation: Department of Clinical Psychiatry and Psychotherapy, School of Medicine, Hannover, Germany.
authors.forename: U
authors.initials: U
authors.lastname: Schneider
authors.forename: F M
authors.initials: FM
authors.lastname: Leweke
authors.forename: W
authors.initials: W
authors.lastname: Niemcyzk
authors.forename: U
authors.initials: U
authors.lastname: Sternemann
authors.forename: M
authors.initials: M
authors.lastname: Bevilacqua
authors.forename: H M
authors.initials: HM
authors.lastname: Emrich
mesh_terms: D000328:Adult; D000430:Alcohol Withdrawal Delirium / Q000175:diagnosis / Q000523:psychology*; D000437:Alcoholism / Q000523:psychology / Q000534:rehabilitation; D003867:Depth Perception / Q000187:drug effects*; D000431:Ethanol / Q000009:adverse effects*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009903:Optical Illusions / Q000187:drug effects*; D009949:Orientation / Q000187:drug effects*; D012016:Reference Values; D015357:Vision Disparity / Q000187:drug effects; D015348:Vision, Binocular / Q000187:drug effects*
chemical_list: D000431:Ethanol