Acoustic Stimulation to Improve Slow-Wave Sleep in Alzheimer's Disease: A Multiple Night At-Home Intervention
Summary
This 2-week open-label at-home intervention study utilized the DREEM2 headband to deliver closed-loop acoustic stimulation (CLAS) during slow-wave sleep in 15 older patients with Alzheimer's disease. On a group level, stimulation significantly enhanced slow-wave activity and SWS with consistent enhancement throughout the intervention, though substantial individual response variability was observed.
Why it matters
Slow-wave sleep is critical for glymphatic clearance of amyloid-beta and other metabolic waste products. This study demonstrates the feasibility of at-home acoustic stimulation to enhance SWS in AD patients, offering a non-pharmacological approach that could potentially slow disease progression by improving brain clearance mechanisms during sleep.
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