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Within generally similar animals, brain size is correlated with intelligence. Across different branches of the tree, it's harder to compare. Bigger bird brain
by bpodgursky 4y ago
Within generally similar animals, brain size is correlated with intelligence. Across different branches of the tree, it's harder to compare.
Bigger bird brains ~= smarter birds. Bigger dog brains ~= smarter dogs. But you can't directly compare dogs and birds in that way.
- kanzure 4y agoIt's the absolute number of cortical neurons, not the size of the brain. "Brains matter, bodies maybe not: the case for examining neuron numbers irrespective of body size" https://nyaspubs.onlinelibrary.wiley.com/doi/10.1111/j.1749-6632.2011.05976.x https://nyaspubs.onlinelibrary.wiley.com/doi/10.1111/j.1749-... "No relative expansion of the number of prefrontal neurons in primate and human evolution" https://www.pnas.org/doi/full/10.1073/pnas.1610178113 https://www.pnas.org/doi/full/10.1073/pnas.1610178113 "The human brain in numbers: A linearly scaled-up primate brain" https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2776484/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2776484/ "The elephant brain in numbers" https://www.frontiersin.org/articles/10.3389/fnana.2014.00046/full https://www.frontiersin.org/articles/10.3389/fnana.2014.0004...
- bpodgursky 4y agoYeah, I don't think that's in contrast to what I said. Neural architectures are very similar between closely related species, and differ wildly between birds and whales.