The article reveals the essence of the gas-discharge visualization method. It shows the historical path of development of research in this area over the time period of the XIX-XXI centuries. The article presents a range of modern research areas that justify the possibility of using the method of gas-discharge visualization (Bioelectrography) in medicine, sports, agriculture, criminology, psychology and pedagogy. The results of the study are presented in the process of using the method of gas-discharge visualization (Bioelectrography) in speech therapy, as well as in monitoring speech correction and statokinetic functions.