Working memory revived in older adults by synchronizing rhythmic brain circuits

a, Target-locked time-frequency representations of total power from occipital and parietooccipital electrodes during memory blocks following sham stimulation in younger minus older adults reveal a significant age-related deficit in alpha suppression (t  = 3.154, P = 0.002, d  = 0.688), suggesting that older adults were unable to functionally disinhibit task-relevant areas as efficiently as younger adults during the perceptual analysis of real-world objects. b, However, this age-related deficit in alpha suppression remained significant even after older adults received active stimulation (t  = 2.766, P = 0.007, d  = 0.604). c, No changes to alpha power were observed between sham and active stimulation in older adults (t  = 0.733, P = 0.468, d  = 0.113).

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