Dr. Matt Walker

And I'll come back to why that's important in a second.

But sure enough, what they demonstrated, they were able to boost the electrical quality of that deep sleep by about 60%.

And they were also able to almost double the amount of memory benefit that sleep provided, which is very impressive.

Now, I should note that there was more recently a replication attempt of that paper, and they did a very good job.

They really did it to the letter, and they weren't able to replicate the effects as powerfully.

However...

Subsequent studies have now taken a more nuanced approach and it's the one that we've taken too.

And it's called closed loop stimulation.

Closed loop here simply means that I'm not going to just wait until you go into deep sleep and then just take a chance and start stimulating your brain, not knowing of the synchrony of my pulses into your brain, right?

relative to the brain waves that you're experiencing.

Closed loop does do that.

So what I'm doing is I'm measuring the electrical brain waves that are occurring.

And because they're nice and slow, they're very predictable.

And I can program my algorithm and my brain stimulation machine to say, I'm going to wait and wait.

And as soon as you are on this peak of your slow wave, it turns out to be the negative trough, but I'll forego that.

we then try to strike at that point of midnight when you're going through the biggest sort of powerful sort of dip in the brainwave and we're trying to sort of enhance it and same with the peak.

So this is where we get a stimulus from the brain, your electrical brain activity, and then we create a timed response.

So it's a stimulus response, it's a call and response loop.

And by way of doing that, it's a much smarter, specific method than a more generalized, I'm just going to stimulate and hope I catch those waves at the peaks.

The reason is important because different people have different speeds of their slow brainwaves.