Résumé
The study was aimed at investigating the features of gnostic functions in the elderly people suffering from dementia. To implement the objectives of the study and to solve the set tasks, the following methods were used: visual gnosis tests (recognition of images, the selection of three subject pictures, selecting parts of a whole, etc.), the acoustic gnosis tests (score and perception of rhythms, recognition of nonspeech sounds), and tactile gnosis tests (tactile identification, Teuber test, Foerster test). When running the visual gnosis tests, the elderly people with the dementia diseases slowly initiated the tasks, made numerous errors, and sometimes could not cope with the tasks at all. Also, the perception integrity disorders, the presence of fragmentation, lack of accuracy, differentiation, preservation of specific objective images-objects, and the violation in the understanding of the spatial arrangement of things were revealed. When performing the auditory-motor coordination tests, the elderly people suffering from dementia needed more time to listen to, they asked for the repeated sound representation, and there were often errors in the rhythmic structure reproduction. When performing the tactile gnosis tests, the elderly people suffering from dementia had difficulties in identifying the subject by touch, in understanding the right and left-sided spatial relationships, and also made errors in recognizing one of the touches when the experimenter touched their hands. Based on the study results, the recommendations have been developed for the preservation and improvement of the existing gnostic functions' disorders in the elderly people suffering from dementia. The recommendations are complex, and they can also be useful for the medical staff whose professional activity is directly related to the elderly people suffering from dementia, their relatives and the persons closest to them.