We work in the neurotech/sleeptech space, specifically with the stimulation which was VERY poorly described in this article where they discuss "pink noise".

They point to one small study in 7 participants, but slow-wave enhancement (increasing slow-wave delta power) has over a decade of research, including 4 recent papers in older adults looking at Alzheimer's both as a preventative measure and as management of symptoms (we can't say treatment yet, that's still many studies away).

We provide our technology to researchers, and are preparing our consumer product.

You can find more on our website, as well as links to a few of the more relevant studies at https://affectablesleep.com

How I describe the technology is that slow-wave activity is the synchronous firing of neurons, the hallmark and defining feature of deep sleep. We can't create slow-waves, but we can increase the electrical activity, increase the synchronous firing of neurons, which is like giving the glymphatic system an extra boost of power. This enhances the restorative function of the brain, without altering sleep time.

I should be completing our whitepaper which provides a more in depth look at the technology, the state of sleep, and a large chronological list of how the research has progressed over the last decade.