What does the research say about slow-wave slope?

Slow-wave slope

There are 4 papers on slow-wave slope in aging research: 1 trial and 3 observational studies in people. The newest story, Nov 9, 2026: “Sleep waves were flatter at later Alzheimer’s disease stages”.

Biomarker

4 papers study it1 more mentions it2 findings

1 new paper in 30 daysSee all 5 papers on slow-wave slope

“In cognitively unimpaired individuals, higher slow-wave slope and greater peak-to-peak amplitude were associated with better cognitive trajectories over time.”

Slow-wave sleep across the Alzheimer’s disease continuum: cognitive trajectories and sex differencesAlzheimer's research & therapy2026doi:10.1186/s13195-026-02249-4

Human trial1
Humans3

Associations

Cognitive trajectories

upin humans1

1 study

Slow-wave slope is associated with cognitive trajectories in humans (cognitively unimpaired individuals).
“In cognitively unimpaired individuals, higher slow-wave slope and greater peak-to-peak amplitude were associated with better cognitive trajectories over time.”
Humanscognitively unimpaired individuals
Sleep waves were flatter at later Alzheimer’s disease stages
Alzheimer's research & therapyNov 9, 2026

White matter integrity

upin humans1

1 study

Slow-wave slope is associated with white matter integrity in humans.
“There were widespread correlations between various diffusion tensor-based metrics of white matter integrity and sleep SWslope, over and above effects of age”
Humanswhite matter
Individual differences in slow wave sleep architecture relate to variation in white matter microstructure across adulthood
Frontiers in aging neuroscienceAug 25, 2022

Latest

2 papers in 12 months

Alzheimer's Research & TherapyNov 9

Sleep waves were flatter at later Alzheimer’s disease stages

An observational study linked larger, steeper sleep waves to better cognitive performance over time among people without cognitive impairment.An observational study linked larger, steeper sleep waves to better cognitive performance over time among people without cognitive impairment.

Cross-sectional studyAlzheimer's disease