
An Observation by Its Own Standard
A preprint from Doris Tsao's group records that, while two macaques view two faces under binocular flash suppression, population activity in face patches and prefrontal cortex switches about every 60 ms between representing one face and representing the other. Within hours the thread announcing it spoke of a "conscious mode" and an "unconscious mode", and one repost later it read "Humans alternate between conscious and unconscious states 15 times per second."
The turns: the experiment on its own terms, with the held-out check and the reconstruction of the unreported face, a finding that needs…
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