Repertoire of nonverbal behavior of patients with dementia of Alzheimer's type

Introduction. The ethological method, which allows objectifying the clinical impression and verifying the diagnosis, is almost not used in the practice of differentiation of total Alzheimer's dementia from dementia of another origin. Objective: systematic description of nonverbal behavior signs in patients with total dementia in Alzheimer disease. Materials and Methods. 52 patients (32 women and 20 men, mean age 66.5 years) with a clinical MRI-confirmed diagnosis “Dementia in Alzheimer disease” (F00.0 and F00.1 according to ICD-10) and MMSE score from 14 to 10 were examined in 2015-2017 years. With a periodicity of 6 months a 15-minute video recording of the ethological repertoire of each patient was performed with frame-by-frame discrimination of elementary units, simple patterns and complex (contextual) forms of nonverbal behavior. Expression of signs was assessed by the summation of observations, according to the formalized 7-point Human Ethological Signs Scale (HESS)...