The brains of galeomorph sharks, myliobatid rays, some teleost taxa (e.g. cichlids), corvid and psittacid birds and a number of mammals, particularly elephants, cetaceans and primates, represent the most complex ones.
Brain Size
Thrashing the measly 1.2kg human brain are the following species: dolphins at 1.5-1.7kg, elephants and blue whales at 5kg and killer whales at roughly 6kg. But, the biggest brain of them all is the sperm whale's, weighing a mighty 7kg.
Humans have the largest brain in proportion to their body size of any living creatures, but also the most complex. Different regions of the brain have become specialised with distinctive structures and functions.
The forebrain is the largest and most highly developed part of the human brain: it consists primarily of the cerebrum and the structures hidden beneath it (see "The Inner Brain").
Theoretical physicist Michio Kaku said, “The human brain has 100 billion neurons, each neuron connected to 10,000 other neurons. Sitting on your shoulders is the most complicated object in the known universe.” As long as humans have existed, people have sought to comprehend the brain.
As the biosphere contains, at last count, more than 7.9 billion human brains, we can confidently state that the biosphere as an object is at least 7.9 billion times more complex than a brain.
As early humans faced new environmental challenges and evolved bigger bodies, they evolved larger and more complex brains. Large, complex brains can process and store a lot of information. That was a big advantage to early humans in their social interactions and encounters with unfamiliar habitats.
The brain is the last and grandest biological frontier, the most complex thing we have yet discovered in our universe. It contains hundreds of billions of cells interlinked through trillions of connections. The brain boggles the mind.
There are roughly 23 thousand genes in the human genome. But, Kaku said, “The human brain has 100 billion neurons, each neuron connected to 10 thousand other neurons. Sitting on your shoulders is the most complicated object in the known universe.”
The human brain is a 3-pound (1.4-kilogram) mass of jelly-like fats and tissues—yet it's the most complex of all known living structures.
Although the male brain is 10 percent larger than the female brain, it does not impact intelligence. Despite the size difference, men's and women's brains are more alike than they are different. One area in which they do differ is the inferior-parietal lobule, which tends to be larger in men.
“We can think of tons of benefits to a larger brain, but the other side of that is brain tissue is incredibly 'expensive' and increasing brain size comes at a heavy cost,” said Kimberley V. Sukhum, a graduate student in biology in Arts & Sciences at Washington University in St.
eLife digest
The human brain is about three times as big as the brain of our closest living relative, the chimpanzee.
CHIMPANZEES. RECKONED to be the most-intelligent animals on the planet, chimps can manipulate the environment and their surroundings to help themselves and their community. They can work out how to use things as tools to get things done faster, and they have outsmarted people many a time.
The smartest person in the world was Isaac Newton, a true polymath whose brilliance never has been, nor ever will be, surpassed. Isaac Newton made tremendous advances, largely on his own, across many disciplines of physics and mathematics. He revolutionized gravitation, motion, optics, and co-invented calculus.
The left brain is more verbal, analytical, and orderly than the right brain. It's sometimes called the digital brain. It's better at things like reading, writing, and computations.
Summary: A team of scientists has calculated the strength of the material deep inside the crust of neutron stars and found it to be the strongest known material in the universe.
The NPR says that Astatine is so rare that it's never even been seen directly because if you managed to actually get enough of it together, it would vaporize itself with its own radioactive heat. In fact, on the entire Earth, there is only one ounce of Astatine.
A microscopic, see-through water flea is the most complex creature ever studied, genomically speaking. Daphnia pulex is the first crustacean to ever have its genome sequenced, and it turns out it has about 31,000 genes — 25 percent more than we humans.
The earliest reference to the brain occurs in the Edwin Smith Surgical Papyrus, written in the 17th century BC. The hieroglyph for brain, occurring eight times in this papyrus, describes the symptoms, diagnosis, and prognosis of two patients, wounded in the head, who had compound fractures of the skull.
Still, the brain has superior flexibility, generalizability, and learning capability than the state-of-the-art computer.
Brain size has a surprisingly small impact on intelligence and behavior. Key Points: Having an unusually large brain doesn't necessarily make someone a genius, and large-scale research suggests only a slight and tenuous relationship between brain size and intelligence.
Genetic studies have demonstrated that humans are still evolving. To investigate which genes are undergoing natural selection, researchers looked into the data produced by the International HapMap Project and the 1000 Genomes Project.
By the age of 6, the size of the brain increases to about 90% of its volume in adulthood. Then, in our 30s and 40s, the brain starts to shrink, with the shrinkage rate increasing even more by age 60. Like wrinkles and gray hair that start to appear later in life, the brain's appearance starts to change, too.
“Computers can outperform humans on certain specialized tasks, such as playing [the game] go or chess, but no computer program today can match human general intelligence,” says Murray Shanahan, Professor of Cognitive Robotics for the Department of Computing at Imperial College in London.