Andrew Huberman· PhD
There's no unique signature for salty or sweet. It is the relative activation of one set of neurons that was activated by sweet, or another set of neurons that was activated by umami.
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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's no unique signature for salty or sweet. It is the relative activation of one set of neurons that was activated by sweet, or another set of neurons that was activated by umami.
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And yet, we know that we have salt receptors, meaning neurons that fire action potentials when salty substances are detected. Much in the same way that we have sweet detectors and bitter detectors and we have detectors of umami, the savory flavor on our tongue.