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Brain Size Current Events | Brain Size News
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Bigger brain size matters for intellectual ability
Brain size matters for intellectual ability and bigger is better, McMaster University researchers have found. view more (2005-12-23)
Is brain size linked to two common gene variants?
Human brain size is hereditary, but the genes that influence brain size in healthy people are unknown. view more (2006-05-17)
Smart and social?
Packs of hunting dogs, troops of baboons, herds of antelope: when people observe social animals, they are often struck by how intelligent they seem, and recent studies suggest that sociality has played a key role in the evolution of larger brain size among several orders of mammals. view more (2009-05-26)
Big brains arose twice in higher primates
After taking a fresh look at an old fossil, John Flynn, Frick Curator of Paleontology at the American Museum of Natural History, and colleagues determined that the brains of the ancestors of modern Neotropical primates were as small as those of their early fossil simian counterparts in the Old World. view more (2008-07-10)
New molecular insight into vertebrate brain development
In the December 1st issue of G&D, Dr. Fred H. Gage (The Salk Institute for Biological Studies) and colleagues reveal a role for the Hippo signaling pathway in the regulation of vertebrate neural development, identifying new factors - and potential therapeutic targets - that may be involved in congenital brain size disorders and neurological... view more... (2008-11-18)
Bigger is smarter
When it comes to estimating the intelligence of various animal species, it may be as simple measuring overall brain size. In fact, making corrections for a species' body size may be a mistake. view more (2007-05-21)
Big-brained birds survive better in nature
Birds with brains that are large in relation to their body size have a lower mortality rate than those with smaller brains, according to new research published in the journal Proceedings of the Royal Society B: Biological Sciences today. view more (2007-01-10)
Brain Structure Implicated In Early Onset Depression
Teenagers suffering from depression may have abnormal brain structure, according to new research. An article published in BMC Medicine this week shows that adolescents diagnosed with major depressive disorder tend to have a small hippocampus - a part of the brain associated with motivation, emotion, and memory formation. Researchers from Dalhousie... view more... (2004-01-26)
Competition May Be Reason For Bigger Brain
For the past 2 million years, the size of the human brain has tripled, growing much faster than other mammals. Examining the reasons for human brain expansion, University of Missouri researchers studied three common hypotheses for brain growth: climate change, ecological demands and social competition. view more (2009-06-23)
VCU Study Shows Big-Brained People Are Smarter
People with bigger brains are smarter than their smaller-brained counterparts, according to a study conducted by a Virginia Commonwealth University researcher published in the journal "Intelligence." view more (2005-06-20)
Physical fitness improves spatial memory, increases size of brain structure
When it comes to the hippocampus, a brain structure vital to certain types of memory, size matters. Numerous studies have shown that bigger is usually better. view more (2009-02-25)
Impulse control area in brain affected in teens with genetic vulnerability for alcoholism
A new study suggests that genetic factors influence size variations in a certain region of the brain, which could in turn be partly responsible for increased susceptibility to alcohol dependence. view more (2008-11-07)
Finding out which parts of the brain do what
Ever since the Greeks proposed that different parts of the brain housed different parts of the ‘soul’, mankind has tried to discover where our mental functions are located. This evening, Thursday 22 February, in a public lecture at the Royal Society, 6 Carlton House Terrace, London SW1Y 5AG, Professor Alan Cowey FRS of the University... view more... (2001-02-15)
Big-brained animals evolve faster
Ever since Darwin, evolutionary biologists have wondered why some lineages have diversified more than others. A classical explanation is that a higher rate of diversification reflects increased ecological opportunities that led to a rapid adaptive radiation of a clade. view more (2008-08-15)
Complexity constrains evolution of human brain genes
Despite the explosive growth in size and complexity of the human brain, the pace of evolutionary change among the thousands of genes expressed in brain tissue has actually slowed since the split, millions of years ago, between human and chimpanzee. view more (2006-12-26)
Tiny but adaptable wasp brains show ability to alter their architecture
For an animal that has a brain about the size of two grains of sand, a lot of plasticity seems to be packed into the head of the tropical paper wasp Polybia aequatorialis. view more (2009-10-15)
Influence of sex and handedness on brain is similar in capuchin monkeys and humans
Capuchin monkeys are playful, inquisitive primates known for their manual dexterity, complex social behavior, and cognitive abilities. view more (2007-08-30)
Brain protein improves stroke symptoms in rats, even when injected after 3 days
A protein naturally occurring in the brain improves recovery from stroke when injected up to three days after the onset of the stroke, and could be used as an effective stroke drug. view more (2006-10-18)
How to Grow a Bigger Brain
Hatchery-reared steelhead trout show increased growth of some parts of the brain when small stones are scattered on the bottom of their tank, according to a new study by researchers at UC Davis. view more (2006-03-07)
Introduced marine species get larger in the invaded region
The transport of species outside their native region through human activities has often had a dramatic impact on the ecosystems into which these species are introduced and on the surrounding economies. The consequences of introduction for the introduced species itself, including changes in body size and shape, are less recognized. Prior studies of... view more... (2003-08-13)
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