THE EFFECTIVENESS OF BRAIN GYM AND MEMORY GAMES NURSING THERAPY ON THE COGNITIVE ABILITIES OF THE ELDERLY AT THE ELDERLY POSYANDU, SIDOSERMO COMMUNITY HEALTH CENTER, SURABAYA. a.a. 2026;3(1):20-32. Accessed March 29, 2026. https://e-journal.aipviki.org/index.php/anji/article/view/172