K. O. Ivanov - Post-graduate Student, Volga State University of Technology, Yoshkar-Ola, Russia V.V. Sevastyanov - Dr.Sc. (Med.), Professor, Volga State University of Technology, Head of the Center for Speech Pathology and Neuro-Rehabilitation, Yoshkar-Ola, Russia S.N. Svintsov - Neurologist of Highest Medical Category, The Republican Clinical Hospital, Yoshkar-Ola, Russia