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That's not quite right - a fish does not have a cortex. The pallium of a fish and mammal are structured differently. A fish's (& bird's) pallium has a clustere
by HarHarVeryFunny 13d ago
That's not quite right - a fish does not have a cortex.
The pallium of a fish and mammal are structured differently. A fish's (& bird's) pallium has a clustered (aka "nuclear") organization, while a mammal's has a mostly layered organization which is what is referred to as the cortex.
There is also more to a brain than just brainstem + pallium. In a vertebrate it's brainstem (aka hindbrain) + midbrain + forebrain, with the pallium being part of the forebrain.
- computerdork 13d agoAh, I stand corrected:) Maybe a better diagram might be to merge our ideas: Fish Brain = brain stem + pallium + other parts of brain[1] | (evolved into) | V Human Brain = brain stem + gigantic cortex(which directly evolved from the pallium) + other parts of brain[1] Good to know:) [1] Am using "other parts of the brain" to cover any parts of the brain not covered by the brain stem and cortex