Pupil dilation and constriction reflect memory storage and retrieval
Is this related to the fact that we squint a little when trying to recall some fact?
I also notice that when completing a timed pattern puzzle, I let my eyes go open and wide initially. Related?
Apparently pupil size corresponds activity of the locus coeruleus, which plays some sort of regulating role in brain function
h/t @michaelbyrne for alerting me to this data
More on locus coeruleus function
It would of course be interesting to understand how America's toxic culture causes races to have different pupil sizes
I recently disparaged the "high decoupling" framework for being a mere euphemism for IQ, but it seems there may actually be a neurological "decoupling" process underlying intelligence:
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