Effects of Gamma Band Frequency Auditory and Visual Stimulation on Working Memory and Postural Balance in Healthy Older Adults

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: A quasi-experimental pre-test, post-test design was used, in which 41 participants were randomly allocated to four groups (AVS, AS, VS, and CG). Interventions were administered for 20 minutes per day over two weeks. Working memory was assessed using N-back task performance (accuracy and completion time), and balance was evaluated using the Fullerton Advanced Balance scale.

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