Absolutely love the sequential logic of the brain's evolution (both in the narration and in neuro-evolution itself!). But at 04:52 there is a chronologic stumble. We mammals did not evolve from reptiles; both reptiles, or the sauropsid line, and mammals, the synapsid line, split from each other shortly after sharing cohabitation as amniotes. The amnion was the great advance from amphibians, who were water-obligate and lay only wet eggs, to creatures who could lay dry eggs, their embryo protected inside by an amniotic membrane. The amniotes then diverged into sauropsida and synapsida, which became in the former instance the reptilian branches of amniotes--turtles, lizards, crocodilians, dinosaurs and birds, and in the latter case the synapsid descendants--monotremes, marsupials and placentals; all the mammals.
For any nerdy onlookers at 7:51, you can calculate the number in the right column by taking the number next to it, then multiply it by one less, then cut that in half. To be explicit, it's (n)×(n-1)÷2. Commonly called the handshake theorem, it was used to prove how many total handshakes could happen between n people. And the logic is fun to think through. Focussing on a single individual for a moment, they would shake hands with n-1 people, the minus one is because they don't shake hands with themselves. Now we apply this to everyone (all n of them). Thats (n)(n-1). Now we need to divide by two because we've double counted. If the single individual we focussed on a moment ago was me, and you were one of the other n-1 people, then we counted me shaking your hand, and your shaking my hand. We've doubled up so must slash the total in half.
I don't reject the theory of evolution. In fact, I think it's pretty incredible. However, all the information about evolution discusses HOW evolution is responsible for the diversity of life but not WHY evolution would "create" anything at all. Why create the senses, complicated organs, and consciousness. It seems like there must be some kind of intelligence which is intrinsic to the universe itself which allows evolution to do what it has done.
The amphibians gave rise to the amniotes, which then split off into two groups; the synapsids and the diapsids. The diapsids would go on to become the reptiles we know today, but I think the synapsids had already split off before that happened. Therefore, the ancestors of today's mammals were never reptiles (though the earliest synapsids would have had a lot in common with the early diapsids, and would have appeared reptile-like in their morphology).
songbirds don't have folding in their cortex but are still very smart, people think because there is a super high density of neurons to make up for the fact there's no folding.
You are just describing the differences and functions of the brain in different species. It is like you going to international space station and describing the functions of each section and comparing to may be an aircraft, helicopter etc. BUT, what you need to do is to tell, what was the evolutionary process of getting there- the detailed mechanics, the neuropeptides, the complex pathways, the new genes in humans, the physiological control etc based on random mutations/ natural selection.
I see the cerebellum as a 3D representation of our environment. Diffusely connected to everything we experience. The growth in enormous numbers of synapses in the cerebellum are connected one to one with the growth of the cerebral cortex where the data is stored. In the cerebellum we do the originally spatial manipulations of the body in an environment, then manipulation of tools and finally, after the emergence of self-consciousness, the manipulation of fantasies and ideas. Thinking in symbols developed thinking in words, manipulated as if it were a path through the cerebellum.
There had to be some natural cue in evolution that allowed our voicebox to evolve. Bit of a chicken and egg situation with words, ideas and language. How can you have one without the other and what would cause it to evolve as it did. Interesting thoughts.
@@devilsolution9781 I feel like the order is; First an adjustment in the attention system that makes thinking in symbols and then metaphors possible. Then an adjustment in the vocal cords in response to the need to convey the metaphors. Then the enlargement of the cerebrum to be able to store the resulting amount of data. This in combination with the enormous cultural development through the use of language. The Neanderthals, I think, built stone tools the way a bird builds a nest, through most gene expression and some learning. Modern man makes what he wants through reflection and deliberation.
Muito obrigado pelo seu comentário! Fico feliz que esteja aproveitando o conteúdo. Peço desculpas por qualquer erro na minha resposta, pois não sou um falante nativo de português e estou usando um aplicativo de tradução. No futuro, gostaria de fazer vídeos em vários idiomas, incluindo português. Continue assistindo e aprendendo!
You are gravely mistaken about the 'evolution of the brain.' The brain has made steady and fundamental adaptions over thousands of years. Your view is an accumulation of myths that unfortunately have become everyday go-to explanations for the gullible
@@senseofmindshow yes u made me reminded my uncle, who tried to paint a very beautiful painting like Da Vinci's painting, and he poured colors on it randomly for a billion years, and he finally succeeded in painting it 😮
@@iq-ride9329 The basic building blocks have existed for hundreds of millions of years but in humans its the way that they are put together and energy constraints being lifted for cortical expansion via cooking of nutrient dense foods. This big brain is a curse. I wish I were a lower life form and not lost in my mind all the time.
@@iq-ride9329 if you don't learn about evolution by natural selection before you die, you would have done yourself the deepest disservice possible. Evolution is the single, most powerful concept to shed light on how you came to be. It is the answer to a question every one of your ancestors likely had, and you are in a position to find out. It is an amazing thing to know, and all it takes is a trip to the library.
Absolutely love the sequential logic of the brain's evolution (both in the narration and in neuro-evolution itself!).
But at 04:52 there is a chronologic stumble. We mammals did not evolve from reptiles; both reptiles, or the sauropsid line, and mammals, the synapsid line, split from each other shortly after sharing cohabitation as amniotes.
The amnion was the great advance from amphibians, who were water-obligate and lay only wet eggs, to creatures who could lay dry eggs, their embryo protected inside by an amniotic membrane. The amniotes then diverged into sauropsida and synapsida, which became in the former instance the reptilian branches of amniotes--turtles, lizards, crocodilians, dinosaurs and birds, and in the latter case the synapsid descendants--monotremes, marsupials and placentals; all the mammals.
Thank you for correcting my mistake! I didn't know that until looking it up based on your comment--will not make that mistake again!
@@senseofmindshow It's an honor to contribute a small thing to a channel that presents such quality, scholarly material!
@@senseofmindshow it's a sign of personal integrity and confidence to simply say "Thank you for correcting my mistake" Well done
I appreciate your highly wrinkled brain.
And I yours.
My question is: Why did human cognition evolve way past what is necessary for survival?
For any nerdy onlookers at 7:51, you can calculate the number in the right column by taking the number next to it, then multiply it by one less, then cut that in half. To be explicit, it's (n)×(n-1)÷2. Commonly called the handshake theorem, it was used to prove how many total handshakes could happen between n people. And the logic is fun to think through. Focussing on a single individual for a moment, they would shake hands with n-1 people, the minus one is because they don't shake hands with themselves. Now we apply this to everyone (all n of them). Thats (n)(n-1). Now we need to divide by two because we've double counted. If the single individual we focussed on a moment ago was me, and you were one of the other n-1 people, then we counted me shaking your hand, and your shaking my hand. We've doubled up so must slash the total in half.
I don't reject the theory of evolution. In fact, I think it's pretty incredible. However, all the information about evolution discusses HOW evolution is responsible for the diversity of life but not WHY evolution would "create" anything at all. Why create the senses, complicated organs, and consciousness. It seems like there must be some kind of intelligence which is intrinsic to the universe itself which allows evolution to do what it has done.
Fantastic content beautifully presented. Thank you.
Very much appreciated!
The amphibians gave rise to the amniotes, which then split off into two groups; the synapsids and the diapsids. The diapsids would go on to become the reptiles we know today, but I think the synapsids had already split off before that happened. Therefore, the ancestors of today's mammals were never reptiles (though the earliest synapsids would have had a lot in common with the early diapsids, and would have appeared reptile-like in their morphology).
songbirds don't have folding in their cortex but are still very smart, people think because there is a super high density of neurons to make up for the fact there's no folding.
As usual in brain development the transition from reptile to mammal is glossed over.
Wdym? Just bc he didn’t talk about it doesn’t mean it didn’t happen. We didn’t just grow from lizards…
Because mammals share a common ancestor with reptiles and they never were reptiles.
Nice video, but please get rid of the music, it is extremely annoying.
Rgds
I just LOVE a well organized and clear presentation of information. Thank you!
You are just describing the differences and functions of the brain in different species. It is like you going to international space station and describing the functions of each section and comparing to may be an aircraft, helicopter etc. BUT, what you need to do is to tell, what was the evolutionary process of getting there- the detailed mechanics, the neuropeptides, the complex pathways, the new genes in humans, the physiological control etc based on random mutations/ natural selection.
Is that even known?
I see the cerebellum as a 3D representation of our environment. Diffusely connected to everything we experience. The growth in enormous numbers of synapses in the cerebellum are connected one to one with the growth of the cerebral cortex where the data is stored. In the cerebellum we do the originally spatial manipulations of the body in an environment, then manipulation of tools and finally, after the emergence of self-consciousness, the manipulation of fantasies and ideas. Thinking in symbols developed thinking in words, manipulated as if it were a path through the cerebellum.
There had to be some natural cue in evolution that allowed our voicebox to evolve. Bit of a chicken and egg situation with words, ideas and language. How can you have one without the other and what would cause it to evolve as it did. Interesting thoughts.
@@devilsolution9781 I feel like the order is; First an adjustment in the attention system that makes thinking in symbols and then metaphors possible. Then an adjustment in the vocal cords in response to the need to convey the metaphors. Then the enlargement of the cerebrum to be able to store the resulting amount of data. This in combination with the enormous cultural development through the use of language.
The Neanderthals, I think, built stone tools the way a bird builds a nest, through most gene expression and some learning. Modern man makes what he wants through reflection and deliberation.
Is hippothalamus same with hippocampus.
great vid!
I love how you present!!
Thank you so much!
Thanks!
Thank YOU!
Muito obrigado. Eu tenho que assistir umas três vezes para entender tudo em inglês.
Parabéns pela importante divulgação científica.
Muito obrigado pelo seu comentário! Fico feliz que esteja aproveitando o conteúdo. Peço desculpas por qualquer erro na minha resposta, pois não sou um falante nativo de português e estou usando um aplicativo de tradução. No futuro, gostaria de fazer vídeos em vários idiomas, incluindo português. Continue assistindo e aprendendo!
Your channel is great I bet that it will be pretty big one day!
Thanks for the confidence!
Very interesting in light of developing neuromorphic AI architectures.
Thanks!
Thank you so much for your contribution!
Thank you! Your vids are awesome!!!
Thank you and thanks for watching!
❤
Very enthusiast!
Thank you for checking it out! Doing the research for this video was fascinating.
when you a lesbo tryin to study evolutionary neurobio and the damn acorn worm comes up again 😑
This is such a great channel. Subbed.
Direct and concise explanation in 12 minutes.
Bedankt
Thank you so much for your support.
Thanks!
Thank you so much for your support!
❤
🙏
5:18
You are gravely mistaken about the 'evolution of the brain.' The brain has made steady and fundamental adaptions over thousands of years. Your view is an accumulation of myths that unfortunately have become everyday go-to explanations for the gullible
This is so fascinating!
Thank you!
And all of that happened accidently?
Not accidentally, but by non-random selection of naturally occurring genetic variation over hundreds of millions of years.
@@senseofmindshow
And ?
@@senseofmindshow yes u made me reminded my uncle, who tried to paint a very beautiful painting like Da Vinci's painting, and he poured colors on it randomly for a billion years, and he finally succeeded in painting it 😮
@@iq-ride9329 The basic building blocks have existed for hundreds of millions of years but in humans its the way that they are put together and energy constraints being lifted for cortical expansion via cooking of nutrient dense foods.
This big brain is a curse. I wish I were a lower life form and not lost in my mind all the time.
@@iq-ride9329 if you don't learn about evolution by natural selection before you die, you would have done yourself the deepest disservice possible. Evolution is the single, most powerful concept to shed light on how you came to be. It is the answer to a question every one of your ancestors likely had, and you are in a position to find out. It is an amazing thing to know, and all it takes is a trip to the library.