Effects of tDCS on Cognitive Function in Older Adults With Subjective Cognitive Decline: Randomized Sham-Controlled Trial

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This randomized, double-blind, sham-controlled clinical trial evaluates the effects of transcranial direct current stimulation (tDCS) using the Sooma Oy device on cognitive function in older adults with Subjective Cognitive Decline (SCD). The study investigates changes in memory, executive function, attention, and global cognition after a structured intervention consisting of 22 intensive sessions and 8 maintenance sessions. Assessments occur at baseline, Week 4, Week 8, and Week 12.