Author contribution: Gulyaev SA— study concept, EEG analysis, manuscript writing; Klimanov SG, Germashev GA, Khanukhova LM — data analysis; Garmash AA — project management.

Compliance with ethical standards: the study was approved by the Ethics Committee of the La Salute Clinic (protocol No. 11-011/24 dated 11 January 2024); it was conducted in accordance with the contract between the National Research Nuclear University MEPhI and La Salute Clinic (No. 09-01/23 dated 09 January 2023) and the principles set out in the Declaration of Helsinki (1964) and its subsequent updates.