Sentences with phrase «of large brains»

Our results call into question the current emphasis on social rather than ecological explanations for the evolution of large brains in primates and evoke a range of ecological and developmental hypotheses centred on frugivory, including spatial information storage, extractive foraging and overcoming metabolic constraints.

«We have shown that species with larger brains relative to their body size experience lower mortality than species with smaller brains, supporting the general importance of the cognitive buffer hypothesis in the evolution of large brains.»

The answer seems to lie in the evolutionary roots of our large brains.

The history of large brains has, very roughly, the shape of a letter Y.

A new examination of the dolphin genome identifies genes involved in the evolution of large brains.

What the endless seekers of the meaning of the chin ought to know, he says, is that the chin is a secondary consequence of «the adaptation to stand upright, the reorientation of the face to maintain a horizontal visual field, and the development of our large brains.»

The fossil record shows that bipedalism is very ancient, predating tool - making and the evolution of large brains that were once seen as the most fundamental biological adaptations of humankind.

Experts have long suspected that complex social interaction drove the evolution of large brains in humans.

Because of these large brains, our heads can barely squeeze through the birth canal.

In addition, although the adaptation of a larger brain may separate humans from their primate relatives, it also came at a cost of increased fuel requirements.

About 2.6 million years ago, our forebears started eating meat and marrow, rich sources of protein and fat that perhaps eventually fueled the growth of larger brains.

Mantas have one of the largest brain to body ratio of any of the fishes.

The emergence of a large brain, with complex connectivity among neurons, suggests that the brain itself is an organ of adaptability.

While dinosaurs ruled the world some 200 million years ago, a group of nocturnal, shrewlike proto - mammals unwittingly sniffed out a strategy for survival that eventually led to the evolution of larger brains.

His team is now using the new model to investigate how social factors may influence evolution of large brain size.

But with the unprecedented abundance of food in more recent times, those selective forces have relaxed, reducing the evolutionary cost of a large brain.

And Lucy showed without a doubt that upright walking preceded the evolution of large brain size.

When humans are torn between paying attention to two different things, it triggers a «conflict» circuit in a brain region called the dorsal anterior cingulate cortex (dACC) which is part of a larger brain structure controlling rational thought and emotions.

Monkeys typically find other monkeys impossible to ignore, and this experiment was no exception: the monkeys often failed at the reward task because they looked at the faces, especially if the faces depicted emotion.When humans are torn between paying attention to two different things, it triggers a «conflict» circuit in a brain region called the dorsal anterior cingulate cortex (dACC) which is part of a larger brain structure controlling rational thought and emotions.Using a tiny sensor implanted in the dACCs of the monkeys, Platt's group was able to measure the electrical activity of single neurons.

Troodon had one of the largest brain - to - body size ratios of any known dinosaur and it is believed to have been one of the most intelligent dinosaurs that ever lived.

For example, Kerr said, «Based on the predominantly somatic descriptions of mindfulness experience offered by the belly - focused group, we would expect there to be more ongoing, resting - state functional connectivity in this group across different parts of a large brain region called the insula that encodes visceral, somatic sensations and also provides a readout of the emotional aspects of so - called «gut feelings».»

The study represents the first salvo of a larger BRAIN Initiative - funded project in Kriegstein's lab to understand the thousands of different cell types that occupy the developing human brain

«Given the parallels we see with primates, we might wonder if one of the larger brained cetaceans, such as orcas - killer whales or bottlenose dolphins might one day reach human levels of cultural complexity,» Muthukrishna said.

For instance, imagine if the genetic variants mentioned earlier, responsible for encouraging the development of larger brains, were identified by geneticists as potentially harmful mutations and promptly eliminated from the gene pool.

The brain like every other human tissue is made up of and utilizes protein, so we do have to eat enough protein while the brain is growing and a small amount for daily operation, but the major metabolic price of our larger brains is the large increase in the percentage of total calories used by our brains compared to animals with smaller brain to body weight ratio.

We would have eaten more nutrient dense foods like that promoted development of a larger brain and better health.

Not exact matches

Several large studies have also linked folic acid supplementation before and during pregnancy with decreased rates of neural - tube defects, which are serious and life - threatening defects of a baby's brain, spine, or spinal cord.

Additionally, several large studies have linked folic acid supplementation before and during pregnancy with decreased rates of neural - tube defects, serious and life - threatening birth defects of the baby's brain, spine, or spinal cord.

And are the brains of innovative individuals structurally or functionally different from other people's — that is, are they larger than average, do their synapses operate differently, or is their wiring denser or perhaps more sparse but faster?

«We provide the first experimental evidence that evolving a larger brain really is costly in terms of both gut investment and, more importantly, reproductive output,» Kolm said

Or how about the brains behind one of today's largest social networks, Mark Zuckerberg?

The book contended a «large draught of salad oil» would «float upon the wine which you shall drink, and suppress the spirits from ascending into the brain.»

His goal is wildly ambitious — in large part because of how little is really understood about the central nervous system, which consists of the brain and spinal cord, and its healing mechanisms.

I've come to Moscow to attend the third annual Open Innovations Forum, an extravagant two - day event that is designed to bring startups, traditional industry, government, and the public together to cultivate growth in Russia's tech community and stanch the brain drain that sends a large part of Russia's ample engineering and programming talent in search of work elsewhere.

Pagan said that a larger, more comprehensive study must be done before determining the drug's true impact, but if the drug's effectiveness is confirmed in such tests, nilotinib could become the first treatment to impede the killing of brain cells that's consistent with Parkinson's, according to NPR.

That could be why parts of the brain related to thinking and memory are larger in people who exercise regularly compared to those who don't, say Harvard Health experts.

Feeding computers large sets of data teaches them to mimic the human brain's ability to infer rules from previous experiences and adapt to changing circumstances.

In our blood and in the brain, oxytocin appears to be the chemical elixir that creates bonds of trust not just in our intimate relationships but also in our business dealings, in politics and in society at large.

Humanity is the only species with a large enough brain to have distinct perceptions despite being of the same species.

Only the series of dominant occasions known as the soul is a separate society, i.e., a set of personally ordered occasions which provide continuity in time for the patterns already generated in large part by nexus of living occasions within the field of activity proper to the brain.

With the evolution of life, at a certain stage, came the development of animals with a nervous system, and eventually human beings with a large brain.

They argue that the basic building blocks of the human brain, such as neurons, are too large for quantum indeterminacy to play a significant role.

It is true, our brains are about three times larger than would be expected for a primate of our size.

We know too that the memory, without which man could have no sense of continuity, is dependent upon the storage capacity of the unbelievably large number of brain cells, so that to the lay mind the brain is as close to an electronic computer as anything could be.

He spells out the neuroscientific view of our brains as a dynamic network of 100 billion neurons capable of 100 trillion different connections — a number larger than that of the elementary particles in the universe.

The difficulties with MacLean's model point to a larger issue that Ashbrook and Albright spend a significant amount of space analyzing: to what extent is the brain modular?

The entities directly below the level of a person, the immediate constituents of a person, are the organs such as the brain and heart, and other large scale body parts, such as the arms and hands.

It must be as large as those regions of the brain from which it receives data and over which it exerts an influence.

But an extended entity as large as much of the human brain is also large enough to be seen by the naked eye.

If the human stream of occasions of dominating awareness is to be influenced by many regions of the brain at once, and is in turn to exercise control over many such regions, it must be directly in touch (both spatially and temporally) with large portions of the brain.