Big brain evolution: adult neurogenesis? II (Evolution)

by dhw, Friday, March 09, 2018, 10:36 (2449 days ago) @ David Turell

DAVID: If the pre-frontal cortex in adults cannot produce more neurons, the argument that concepts forced an enlargement of the brain by making new neurons and new networks falls by the wayside. I would trust the earlier studies based on exposure to isotopes more than this study.

Perhaps you could make this clearer. How could any part of the brain expand without making more neurons – other, I suppose, than existing neurons expanding? Even in your own hypothesis, did your God add neurons or simply expand existing neurons? Either way, it still makes perfect sense that new concepts required greater brain capacity. I’m glad to see that your distrust of these new findings suggests that my hypothesis does not fall by the wayside.