Brain Comparison of Human and Monkey

Human intelligence shaped by the evolution. Armed with a large brain capacity, the human being the smartest species on earth. Humans have at least two functional tissues in the brain cerebral cortex, the part that is not even found in rhesus monkeys, a species known as the relatives of our ancestors.

Thus the conclusion of the neuro-physiology expert from the University of Leuven in Belgium and Harvard Medical School, Wim Vanduffel, in collaboration with a researchers team from Italy and the United States. Vanduffel findings, obtained by analysis of the scanning function of the brain, suggesting that these two new functional networks of the human brain in the evolutionary process from primate ancestors.

Evolution may have given humans a unique brain structure that gave them a leg up over primates--are we really surprised?. (Pictures from: http://www.scienceworldreport.com/)

Vanduffel said that human ancestors evolved secede from rhesus monkeys about 25 million years ago. Since then, the area of ​​early human brain is constantly changing. There are parts missing, grow, and change function. "Since then, the structure of the human brain has evolved a unique cortical network and distinguishes it from other species," said Vanduffel, on February 25, 2013.

Model of a human brain. (Pictures from: http://www.sciencedaily.com/)

The team of scientists scan the brains of humans and rhesus monkeys at rest and while watching the movie to compare both the place and function of cortical brain tissue. As a result, the human and monkey brain are active even at rest.

Different parts of the brain (called a resting phase) simultaneously active during the break. Surprisingly, most of the state of the human and monkey brains have in common. But a team of scientists discovered two unique networks in humans and a unique network in monkeys.

When watching movies, the cerebral cortex to process large amounts of information images and sound. However, at rest, the resting phase in human tissues respond to stimuli such as pictures and sounds in a completely different way than is done by the monkey brain.

"In other words, the human brain has a unique structure that is anatomically absent in monkeys," said Vanduffel. The structure is located at the back of the head-on and in front of the cortex and is believed to be associated with human cognitive abilities, are not found in rhesus monkey brain structure.

Scanning was performed using fMRI (functional Magnetic Resonance Imaging), to visualize brain activity. This fMRI scanner to map functional activity in the brain by detecting changes in blood flow. Oxygen content and the amount of blood in the brain is recorded varies according to specific task, allowing the activity tracked. *** [EKA | FROM VARUOUS SOURCES | SCIENCEDAILY | MAHARDIKA SATRIA HADI | KORAN TEMPO 4155]

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