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Posted on 04-23-2018

Pink Noise While Asleep Helps Memory

Researchers from Northwestern University have found that acoustic stimulation using pink noise (random sound with more low frequencies than white noise) increases slow-wave brain activity, thus improving sleep-dependent memory retention. Thirteen mature adults completed two nights of sleep; one with the pink noise and one without, in random order. Specific brainwave activity increased during the periods when the pink noise was being delivered, suggesting that its pulsing could help older adults preserve some memory functions.

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