Andrew Huberman· PhD
Stimulants, make the pupils big. - Big, right? - Yeah. Like cocaine, amphetamine. - Right, exactly. - And opioids, you get constricted pupils.
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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.
Stimulants, make the pupils big. - Big, right? - Yeah. Like cocaine, amphetamine. - Right, exactly. - And opioids, you get constricted pupils.
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Bookmarking — the dossier-vs-overview split is the right call. Most of the time I want overview; sometimes I want receipts.
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Most drugs, that affect level of consciousness, can affect eyes and eye movements, either the dilation or contraction of the pupils, depending on whether it's a stimulant or an opioid.