Suzana Herculano-Houzel: What Is So Special About the Human Brain? | Talk Video & Analysis, transcripts | TED.com
Experimentation with the human brain, by Suzana, taken from TED; Suzana Herculano-Houzel: What is so special about the human brain? | Talk Video | TED.com: Cooking OUR Food made Us HUMAN
Super interesting way of understanding the human brain:
86 Billion NEURONS, in Kilos,1.2 KILOS, that is 2% of the body weight.
'via Blog this'This was a very enlightening talk. Now I know why I am hungry all of the time.That is not to say that I eat all the time. I don't! I also think quite well. I have an IQ of 147 and that is a relatively high number. My question is why do I have such a relatively high IQ? Why are some people smarter than others?
We are not all equal.
B. I think perhaps it's not just the cooking. It must be more how we process the food and make good use of it, as uncooked food is now considered "better" for us... and then there's the ability to think about it, and then come up with other ideas such as exercise, reading, learning, exchange of ideas, etc, etc. I think cooking is the physical imbursement for human to develop the brain, and reading, learning and exchange of ideas are after the physical changes that level up to a mental change.
C. Swinging from branch to branch involves very high speed calculations about how body trajectory will intersect with a chosen branch, and about the load-bearing characteristics of the branch. We had to do all this at the same time as keeping track of our prey, or attackers, and our compatriots in our troupe. Cows and whales and rodents don't have to process things so quickly. Whales do hunt in packs, but in a slow physical environment with a lot of passive buoyancy. Rats do quite a bit of jumping, but not much branch-to-branch, and they do not hunt cooperatively in packs. So short axons and the resulting tightly-packed neurons are necessary to do the calculations quickly enough to avoid missing the branch and falling to your death. Start eating cooked food, and you have lots of shared time around the fire to apply the same processing ability to inventing and learning language (although the recent preference for computer games takes us back to the fast spatial calculations). A journey through the trees is a remembered sequence of trees and their load-bearing branches, in 3-dimensions. A journey through a sentence is not much different. On the face of it this is one-dimensional, although Chomsky has shown that there is simultaneously a phrase structure organisation over the sequence of words. Then of course our opposing thumbs, which are really great for hanging onto branches, soon allow us to use sticks as tools to root out insects.
great talk, Suzane, nice Brazilian accent. Olga