Andrew Huberman· PhD
There are two separate clusters of neurons in the these cranial nerve nuclei that when eyes are up, it increases our level of alertness. When our eyes are down, we go into states of more calm and quiet.
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The headline is broadly defensible, but the qualifications matter. Effect sizes vary by population, the strongest claims rest on shorter trials, and credible voices push back on how it's typically framed.
There are two separate clusters of neurons in the these cranial nerve nuclei that when eyes are up, it increases our level of alertness. When our eyes are down, we go into states of more calm and quiet.
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