This is specifically the area we work in traditionally called slow-wave enhancement which is stimulating the restorative function of sleep.
This paper [1] specifically looks at amyloid response as a result of stimulation and shows a corresponding relationship between stimulation response, amyloid response, and memory. I wouldn't say it's putting a bow on the results, but it is a very promising result.
If you're curious about what we're building, I'll be posting a ShowHN next week which dives into some of the data in a way regulatory requirements don't permit us to do on our website, but until then, check out https://affectablesleep.com
Long-term particularly if we can make the numbers work for a monthly subscription, it makes the technology more accessible.