Large size does not necessarily mean everything when we are talking about brain evolution. It is said by experts. From the results of research in the UK, as quoted from the BBC, the increasing complexity of relationships between brain cells may be the biggest drive that evolution. Results of research into the nature of the brain found clear differences between junctions in the brain of mammals, insects, and single cell creatures.
The changes that occurred over millions of years is more important than brain size. Our ancestors in prehistoric times, such as Homo Erectus, had a brain size is much smaller than modern humans. The evidence suggests that human brain size has a beneficial evolution. But evolution is also quite inviting the risk of adverse, particularly the risk during childbirth because the amount of energy needed for the growing brain has also increased.
However, research from the Sanger Institute in Cambridge and the University of Keele and Edinburgh showed something else. They say that the key to the evolution of these could be leaning on something greater than simply increasing the number of brain cells. We look closely at the synapse, the junction between nervous system cells, with more depth in single-celled yeast, fruit flies, and mice, apparently they showed three different stages in the evolution of life.
Of particular interest were 600 proteins found in mammalian synapses. But surprisingly, only about half those found in fruit flies, and only 25% in the yeast cells with no brain.
Therefore, they argue that great advances in evolution, from single cells into cell phones, and the change between invertebrates and vertebrates are influenced by changes in synaptic complexity that so quickly.
“Size is not everything, for examples, whales and elephants have bigger brains than humans. This latest research shows that we can learn more about how synapses work to improve our understanding of the complexity of the brain.”
“But it is true when we talk about intelligence, the human brain is greater that makes a difference, “said Dr Hugo Spiers, a brain cell expert from University College London.