Darwin's theory specifies descent with modification through natural selection. What that means essentially (and as an over simplification) is that DNA - which we now know to be the engine of change in species - is copied wrong, on occasion, leading to a modified gene. Sometimes those modifications have consequences for the animal. In the case of human brain size, perhaps some early hominid had a gene coding for the additional split of neurons during it's prenatal life (all animals, even ants and beetles, have the same basic brain chemistry. The main difference is that, during development, higher animals' brains are told to keep producing neurons, thus increasing in size to accommodate. Our brains produce the most neurons per overall surface area). So this hominid, and it's offspring, and maybe some relatives all have slightly better brains than their contemporaries allowing them greater powers of abstract thought, communication, and organization...MAYBE. They soon start out competing their neighbors for Natural Resources thereby increasing their numbers though better food, shelter, etc (again, this is all hypothetical and oversimplified). Soon their numbers are so great, they completely overwhelm the competing populations whose numbers crash. They are, unwittingly, moving toward becoming a new species, over thousands of generations, with slightly bigger brains. With the better food (mostly protein) comes the fuel to support the development of such large brains.
The same is true for all modifications from giraffe necks to whale spouts. They developed overtime through a series of accidents that worked in the animal's favor environmentally.
evolution has given homo sapein (modern man) the biggest brain out of all the other species of human we are in most cases the only humans that live on this planet yet.
The Neanderthal's brain was the same size as a modern human's brain.
Their brain size was the same as a modern human.
Their brain size was the same as a modern human.
nervous tissue
The theory of lateralization was developed to explain this phenomenon. The fields of brain study are always changing as scientists and psychologists learn more and more about how the brain functions.
The theory of lateralization was developed to explain this phenomenon. The fields of brain study are always changing as scientists and psychologists learn more and more about how the brain functions.
The theory of lateralization was developed to explain this phenomenon. The fields of brain study are always changing as scientists and psychologists learn more and more about how the brain functions.
Rossend Pujadas has written: 'The brain, mastermind of evolution?' -- subject(s): Brain, Evolution
The brain's processing of the emotional stimulus precedes both the physiological arousal and the simultaneously occurring emotion.
Maggot Brain Theory was created on 1994-05-24.
I know Christian biology teachers who dismiss the theory of evolution all together. But some manage to use only their "logical" part of their brain when it comes to evolution and think that the seven days mentioned in the Bible were simply figurative when He "evolutioned" everything into being.
Gerhardt von Bonin has written: 'The evolution of the human brain' -- subject(s): Accessible book, Brain, Evolution, Human evolution, Man, Origin, Hersenen, Evolutie, Somatologia Humana 'Essay on the cerebral cortex' -- subject(s): Brain 'The neocortex of Macaca mulatta' -- subject(s): Brain, Monkeys
Evolution increased brain size.
Physiological psychology includes any ideas that relate biology and neurosciences to behavior and emotions. Evolutionary psychology uses the theory of evolution to help explain behavior in humans and other animals. Cognitive psychology looks at the mind rather than the brain and examines healthy vs unhealthy thinking.
The Big Brain Theory - 2013 is rated/received certificates of: USA:TV-PG
To explain how brain scanners work