Funding: the study was supported by the RSF grant (No. 22-15-00448).

Author contribution: Fokin VF — manuscript writing; Ponomareva NV — design of physiological and neuropsychological tests, general study design; Konovalov RN — neuroimaging test design; Medvedev RB — Doppler tests; Boravova AI — psychophysiological tests; Lagoda OV — clinical tests; Krotenkova MV — neuroimaging test management; Tanashyan MM — clinical test management, general study design.

Compliance with ethical standards: the study was approved by the Ethics Committee of the Research Center of Neurology (protocol No. 5-6/22 dated 1 June 2022). The informed consent was submitted by all study participants.