Navigation Links
There's something fishy about human brain evolution

Forget the textbook story about tool use and language sparking the dramatic evolutionary growth of the human brain. Instead, imagine ancient hominid children chasing frogs. Not for fun, but for food.

According to Dr. Stephen Cunnane it was a rich and secure shore-based diet that fuelled and provided the essential nutrients to make our brains what they are today. Controversially, according to Dr. Cunnane our initial brain boost didn't happen by adaptation, but by exaptation, or chance.

"Anthropologists and evolutionary biologists usually point to things like the rise of language and tool making to explain the massive expansion of early hominid brains. But this is a Catch-22. Something had to start the process of brain expansion and I think it was early humans eating clams, frogs, bird eggs and fish from shoreline environments. This is what created the necessary physiological conditions for explosive brain growth," says Dr. Cunnane, a metabolic physiologist at the University of Sherbrooke in Sherbrooke, Quebec.

The evolutionary growth in hominid brain size remains a mystery and a major point of contention among anthropologists. Our brains weigh roughly twice as much as our similarly sized earliest human relative, Homo habilis two million years ago. The big question is which came first ?the bigger brain or the social, linguistic and tool-making skills we associate with it?

But, Dr. Cunnane argues that most anthropologists are ignorant or dismissive of the key missing link to help answer this question: the metabolic constraints that are critical for healthy human brain development today, and for its evolution.

Human brains aren't just comparatively big, they're hungry. The average newborn's brain consumes an amazing 75-per cent of an infant's daily energy needs. According to Dr. Cunnane, to fuel this neural demand, human babies are born with a built-in energy reservoir ?that cute baby fat. Human infants are the only primate babies
'"/>

Source:Natural Sciences and Engineering Research Council


Page: 1 2 3

Related biology news :

1. Psst! Coffee drinkers: Fruit flies have something to tell you about caffeine
2. Bird sex is something else
3. Quantum Dots Research Leads to New Knowledge about Protein Binding in Plants
4. U-M scientist to talk about tissue engineering at AAAS
5. US life expectancy about to decline, researchers say
6. Surprising findings reported about iron overload
7. Alaskan puzzles, monitoring provide insight about North Pacific salmon runs
8. Important discovery about second most fatal cancer
9. Survey reveals women and doctors arent talking about HPV
10. Hopkins AIDS experts issue warning about global efforts to provide drug therapies
11. Geckos: Its not always about sex
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: There something fishy about human brain evolution

(Date:7/11/2014)... Rio de Janeiro, Brazil- In the brains of ... mechanism that allows an electric or chemical signal ... another. Chemical synapses, which are the most abundant ... inhibitory. Synapse formation is crucial for learning, memory, ... and inhibitory synapses critical for brain function. ...
(Date:7/10/2014)... , July 1, 2014 Smart ... way for convenience and improved security: NXT-ID, Inc. (OTCBB: NXTD), ... GOOG ), Apple Inc. (NASDAQ: AAPL ... Corporation (NYSE: MA) NXT-ID, Inc., (OTCQB: NXTD) a biometric ... to announce that the second series of 30 second spots ...
(Date:7/10/2014)... -- Research and Markets ( http://www.researchandmarkets.com/research/h7h8lq/gesture ) has ... Recognition & Touch-Less Sensing (2D, 3D, Ultrasonic, IR, ... to their offering http://photos.prnewswire.com/prnh/20130307/600769 ... Sensing Market to Grow Exponentially. Touch-less sensing applications ... companies were unable to leverage this technology due ...
Breaking Biology News(10 mins):Blame it on the astrocytes 2Advantages for Digital Wallets Eliminate Need to Carry Credit Cards - Large Scale CNBC Ad Campaign for Latest Smart Wallet to Commence July 7th 2Advantages for Digital Wallets Eliminate Need to Carry Credit Cards - Large Scale CNBC Ad Campaign for Latest Smart Wallet to Commence July 7th 3Advantages for Digital Wallets Eliminate Need to Carry Credit Cards - Large Scale CNBC Ad Campaign for Latest Smart Wallet to Commence July 7th 4Advantages for Digital Wallets Eliminate Need to Carry Credit Cards - Large Scale CNBC Ad Campaign for Latest Smart Wallet to Commence July 7th 5Global Gesture Recognition & Touch-Less Sensing (2D, 3D, Ultrasonic, IR, Capacitive) Market - Forecasts to 2020 2
... the Texas Biomedical Research Institute may help explain why ... at-risk for atypical fractures in the long bones in ... Ph.D. and colleagues at the Southwest Research Institute and ... differences in the microstructure of their femurs that she ...
... Antibiotic resistance is an international reality whose solution ... an infectious disease physician. "The big problem is ... not only can they lead to side effects like ... is development of multidrug-resistant organisms," said Dr. Josѐ A. ...
... the genetic signature of respiratory syncytial virus (RSV), the leading ... a key step toward a better understanding of the immune ... vaccine and a tool that could allow physicians to determine ... study, from a team at The Research Institute at Nationwide ...
Cached Biology News:New studies may explain fractures in some who take osteoporosis drugs 2Antibiotic resistance is a international issue that better education can address 2Genetic signature identified for RSV, the leading cause of infant hospitalizations worldwide 2Genetic signature identified for RSV, the leading cause of infant hospitalizations worldwide 3
(Date:7/10/2014)... July 10, 2014 Deep Knowledge ... Medicine Forum on ‘Commercialising Longevity Research’ and welcomed ... to the London Bioscience Innovation Center for the ... and Aging Analytics Ltd. The meeting highlighted the ... translational research for age-related disease, as well as ...
(Date:7/10/2014)... San Francisco, CA (PRWEB) July 10, 2014 ... a family closer together. The Archer Family purchased ... information contained within DNA, but ended up with a ... surprising discoveries contained within the family members’ DNA genuinely ... family had decided to search deeper into genetic history ...
(Date:7/10/2014)... (PRWEB) July 10, 2014 EvoDerma ’s ... convenience. This rejuvenating device now comes with a second treatment ... over time. , The new cup is thinner on the ... works to target rough, thin and uneven surfaces on the ... cup for a stimulating treatment on areas such as the ...
(Date:7/10/2014)... PETERSBURG, Russia , July 10, 2014 ... Russian Federation Dmitry Medvedev , presented ... biopharmaceutical company BIOCAD . The Company is developing ... scope of MabNext project BIOCAD develops a number of ... cancer and autoimmune diseases. The ceremony took place at ...
Breaking Biology Technology:DKV Sponsors Forum on Commercialising Longevity Research; Brings Together Scientists, Investors, Entrepreneurs and Celebrities 2DKV Sponsors Forum on Commercialising Longevity Research; Brings Together Scientists, Investors, Entrepreneurs and Celebrities 3DKV Sponsors Forum on Commercialising Longevity Research; Brings Together Scientists, Investors, Entrepreneurs and Celebrities 4DKV Sponsors Forum on Commercialising Longevity Research; Brings Together Scientists, Investors, Entrepreneurs and Celebrities 5DKV Sponsors Forum on Commercialising Longevity Research; Brings Together Scientists, Investors, Entrepreneurs and Celebrities 6Ancestry DNA Test Reveals a Controversial and Undiscovered Family History 2Ancestry DNA Test Reveals a Controversial and Undiscovered Family History 3Ancestry DNA Test Reveals a Controversial and Undiscovered Family History 4Ancestry DNA Test Reveals a Controversial and Undiscovered Family History 5Introducing a New Bonus Treatment Cup for EvoDerma’s NOOME Anti-Aging Motion 2Dmitry Medvedev Presented BIOCAD the First National "Industry" Award 2
... one of six states to receive a $50,000 grant ... network further into the Internet age. , ,Wisconsin's grant ... of Justice Assistance, which houses the Wisconsin Justice ... maintaining, promoting and coordinating automated justice information systems. , ...
... the learning acquired in the program but rather the blue-chip roster ... mythology goes, you can call on a fellow alum to help ... will be of value once again. , ,Though I can't say ... can attest to the power of alumni connections. , ,While I'm ...
... of health-care and business technology, announced a seven-year contract with ... Information System (MMIS). The new system is expected to be ... contracts EDS to implement its InterChange health system on the ... Services . The contract is worth approximately $189 million and ...
Cached Biology Technology:State receives grant for justice information sharing 2Pay attention to your alumni connections when job hunting 2Pay attention to your alumni connections when job hunting 3Pay attention to your alumni connections when job hunting 4State picks long-time vendor for $189m Medicaid information system 2
... The Dyad Disciple thermal cycler is ... It may also be operated independently, using ... variety of interchangeable Alpha units (sample-holder, heat-pump ... well as the Chromo4 real-time detector. Peltier ...
Mouse monoclonal [IA-C6] to MHC Class II I Ab + Ad (FITC) ( Abpromise for all tested applications). Antigen: Tissue / cell preparation of Purified Mouse lymph node B cells...
BD BioCoat Vented Caps for 175 cm2 Flasks...
BD BioCoat Poly-D-Lysine 60 mm Culture Dishes, tissue-culture treated polystyrene with a uniform application of poly-D-lysine....
Biology Products: