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.
Among 100 older adults followed for two years, having both conditions was linked to greater impairment, but not faster decline than either alone.Among 100 older adults followed for two years, having both conditions was linked to greater impairment, but not faster decline than either alone.
Accepted, not yet published: cohort · 100 peopleBiomarkers
Who was studied100 older adults, 2 years, against healthy controls and single-condition groups
What changedPeople with both conditions had worse thinking skills than healthy people or those with either condition alone