factual
A cubic millimeter of cortex holds ~100,000 neurons
A cortical column above one square millimeter of cortex, extending up about three millimeters, contains on the order of 100,000 neurons plus much additional cellular machinery, meaning even millimeter-resolution imaging vastly underestimates the underlying complexity.
factualpending
Speaker
David PoeppelEvidence Quote
“It goes up about 3 millimeters or so, depending on where you are, estimates are that it's on the order of 100,000 neurons.”
Source
15 | David Poeppel on Thought, Language, and How to Understand the Brain— Sean Carroll's MindscapeCreated: 6/13/2026, 12:19:52 AM
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