Kembayeva , Z. et al. 2026. SUBJECT-SPECIFIC OPTIMIZATION OF THE EEG SIGNAL PROCESSING PIPELINE FOR MULTI-CLASS MOTOR IMAGERY CLASSIFICATION. EKTU Journal of Information and Communication Sciences. 1, 3 (Sep. 2026). DOI:https://doi.org/10.51885/3134-8025_JICS_2026_3_4.