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What
If you could make your sleep more efficient as a sleep scientist
This is the question
That has captivated me for the past ten years
Because while the light bulb and technology have brought about a world of twenty for our work and productivity
It has come at the cost of our naturally occurring circadian rhythm and our bodies need for sleep
The circatan rrythm dictakes our energy levels throughout the day
And only recently we've been conducting a global experiment on this rythm
Which is putting our sleep palth and ultimately our life quality in jeopardy
Because of this we aren't getting the sleep
We need with the average americans sleeping a whole hour
Less than they did in the one hundred and forty years for some reason
We decided to wear it as a badge of honor that we can get by i'm not enough sleep
This all adds up to a real health crisis
Most of us know that poor sleep is linked to diseases like alstyeimercarcarovascular disease
Stroke and diabetes
And if you go untreated with a sleep to sodor like sleep batnea
You're more likely to get many of these own nesis
But did you know about sleeps impact on your mental states
Poor sleep makes us make risky rh decisions as a drain on our capacity for empathy one sleep deprivation literally makes us more sensitive to our own pain
It's not so surprising that we have a hard time relating to others
And just generally being a good and healthy person
When we're sleeed deprived scientists are now starting to understand how not only the quality but also the quality of sleep impacts our health and wobeing
My research focuses on what many scientists believe is the most regenertive stage of sleep
Deep sleep
We now know that generally speaking there are three stages of sleep
Light sleep
Rapidae movement or red and deep sleep
We measure these stages by connecting electrorods to the scalp chin and chest in light sleep in rem
Our brainwaves are very similar to our brainwaves in waking life
But our brainwaves in deep sleep have these long burst brainwaves that are very different from our waking life brainwaves
These long burst brainwaves are called delta waves
When we don't get the deep sleep
We need it inhibits our ability to learn and for our cells and bodies to recover deep sleep is how we convert all those interactions that we make during the day into our long term memory and personalities as we get older
We're more likely to lose these regenerative delta waves
So in a way
Deep sleep and deltawaves are actually a marker for biological youth
So naturally
I wanted to get more deep sleep for myself
And i literally tried almost every gadget
Gizmo device and hacked out there consumer grade
Clinical grade
What have you
I learned a lot
And i found
I really do need like most people ate hours of sleep
I even shifted my circuadtian component in orted by changing my meals exercise and light exposure
But i still coulldn't find a way
Get a deeeper night of sleep
That is until i met doctor demetri
Gary shanko from harvard medical school to meet you
Told me about a new finding in the literature
We're a lab out of germany
Showed that
If you could place certain sounds at the right time and people sleep
You could actually make sleep deeper and more efficient
And what's more is that this lab showed that
That you actually could improve next day memory performance with this sound to miti
And i teamed up
And we began working on a way to build this technology without research lab collaborators at pen state
We designed experiments in order to validate our system
And we since received grant funding from the national science foundation and the national institute of health to develop this deep sleeps stimulating technology
Here's how it works people came in a lab
And we hook them up to a number of devices
Two of which i have on right here not a fashion statement
When we detected that people were in deep sleep
We played the deep sleep stimulating sounds
That was shown to make them have deeper sleep
I'm going to demo this sound for you right now
布利威尔传
So that sound is actually at the same burst frequency as your brainwaves
When your brain is in deep sleep
That sound pattern actually primes your minds to have more of these regenerative delta waves
When we asked participants the next day about the sounds
They were completely unaware
That we played the sounds
Yet their brains responded with more of these deltawaves
Here's an image of someone's brainwaves from the study
That we conducted see the bottom panel
This shows the sound being played that burst frequency
Now i look at the brain waves in the upper part of the graph
You can see from the graph
That the sound is actually producing more of these regenerative dela waves
We learns that we could accurately track sleep
Without hooking people up to electroads
And makes people sleep deeper
We're continuing to develop the right sound environment and sleep habitat
To improve people sleep health
Our sleep isn't as regenerative as it could be
But maybe one day soon we could wear a small device and get more out of our sleep
Thank you
