You're listening to Bulletproof Radio with Dave Asprey.

Today's cool fact of the day is that every time your heart beats, fluid squishes through

your brain and actually jiggles your brain.

And we didn't really understand that.

A new twist on magnetic resonance imaging, aka MRI, has illuminated those brain pulsations

and ripples.

Their movement so subtle, no one had noticed them using all the imaging that we have today.

And they discovered that abnormal brain motion could signal problems like aneurysms or

traumatic brain injuries or concussions, something that I've dealt with and a lot of guests

on the show have dealt with.

And surprisingly, about 90% of people who go through the 40 years of Xenna or feedback

training program show signs of subtle brain injuries in their electrical signaling that

we look at on day one, which is amazing.

So we're all these high performers out there who actually fell down and we were two and

got a little brain injury.

It's fascinating.

But these scientists honed an existing method called amplified MRI where they stitched together

multiple images, taken at precise times of your heartbeat.

They used an algorithm that exaggerates those tiny movements.

This actually happened between Stanford University and Steven Institute of Technology

and Hoboken, New Jersey.

And the University of Auckland and New Zealand.

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