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Originally posted by Xcalibur254
reply to post by moosevernel
I have already addressed your question. Our prefrontal cortex is larger than other species, which is responsible for many of the behaviors that are distinctly human. Add to that the fact that the human brain has a proportionately larger number of sulci and gyri, which are the folds and ridges of the brain, thus giving our brains a much larger surface area. There are other factors as well, but they are all explainable by evolution.
Originally posted by GhostHunterTM
in the end it is living that is our job on this planet,
Speaking in terms of mass, a human's brain has a brain-to-body ratio of 1/40. This means that your whole body weighs 40 times more than you brain does. Some small birds have very high brain-to-body masses with a ratio of 1/12. Here are some known brain-to-body mass ratios of common animals in descending order:
Humming bird: 1/25
Squirrel monkeys: 1/32 to 1/ 20
Mice: 1/40
Humans: 1/49
cats: 1/100
dogs:1/125
Frogs: 1/172
Lions: 1/500
Elephants: 1/560
Horses: 1/600
Sharks: 1/2500
Hippos: 1/2700
Originally posted by Xcalibur254
reply to post by oliveoil
There is nothing in psychology that cannot be explained by the physical model. If thoughts came from a different plane, how come you can cause different thoughts by stimulating different parts of the brain? Or why does ingesting different chemical substance produce new behavior patterns? All evidence indicates that thoughts are a product solely of the brain. If they were produced in some other plane they would still be dependent on the physical world, making it a lower plane if it cannot function without cues from the physical one.
Our environment has remained fairly stable so major changes have not been needed for us to survive.