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Sunday 18 August 2013

What makes human and chimp brains different?

The average weight of a chimpanzee brain is 384 grams (13.5 ounces), but human brains are around 3 and a half times heavier. Although each species has a differently structured brain, for example the brain cells in a rodent are much less efficiently packed so would therefore mean that  Rodents would  need a brain at least 35 times bigger than ours to have the same number of brain cells as an average human.

Chimps on the other hand are closely related to humans, so we share a very similar brain structure to them, however they still have around 3 and a half times less brain cells than a human - roughly 49 billion.

Chimpanzees have a lot less brain dedicated to white matter in the temporal cortex which means they have lot fewer connections in the brain (neural connections) so then they have a lesser ability to process information to the same level that humans can.


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