Science of the bloody brain
2013 10 03

By Natasha Bray | The Brain Bank

Luigi Cane literally had a hole in his head.

A brick had unforgivingly fallen on the back of it, smashing a section of his skull like a spoon knocking the shell off the top of a hard-boiled egg. And so, after surgery, part of the surface of his brain was left precariously unprotected except for a layer of skin. Peering through this accidental window into his head, Dr. Angelo Mosso was able to measure the pulsations of the brain’s blood supply. Cane sat in Mosso’s lab with pressure gauges strapped around his feet and a handmade instrument resting delicately on the skin over his vulnerable brain. This was to be the world première of neuroimaging.

“What is 27 times 13?” Mosso inquired. Cane thought deeply and silently while the various contraptions simultaneously showed his feet shrinking while his brain swelled with blood flow. This experiment was the first to reveal that when our mental ‘cogs’ turn, a boost of blood is directed to the brain. Mosso confirmed this in individuals with intact skulls with what was essentially a wobble-board bed. When people lying down on the balance thought about tricky or even particularly emotional questions, it would tip down towards the head end with the weight of the extra blood.


One of Mosso’s experiments. Each of the four traces on the right compares brain blood flow (red) and pulsations in the feet (black) simultaneously, during 1)resting 2)listening to the clock and church bells 3)remembering whether Ave Maria should have been said and 4)’8×12′?

The brain is an extremely greedy part of the body when it comes to blood. While it only makes up about a fiftieth of the body’s mass, it consumes up to a fifth of the total energy and oxygen carried in the bloodstream. Charles Roy and Charles Sherrington later proved that the blood rushing to the head was actually being diverted specifically to the parts that were most active – like a bonus for the busiest brain cells. Over twelve decades later, neuroscientists are still using this same principle to observe brain activity and the accompanying ‘rush of blood’ to the head.

[...]

Read the full article at: thebrainbank.scienceblog.com



READ: Vegetative man tells doctors ‘I’m not in pain’ via MRI communication




Related Articles
Animals Evolve Bigger Brains When Around Humans
Brain could exist even without the body: Stephen Hawking
Researchers Map Sixth Sense Within the Brain
Scientists have lab-grown brains on the brain
Researcher controls colleague’s motions in first human brain-to-brain interface
Brain Imaging Could Detect Autism Risk in Infants as Young as 6 Months
Music Video made with collection of data gathered from MRI scans


Latest News from our Front Page

The New Normal: Artist Butchers "Disney Princesses" with Breast Cancer Scars
2014 11 25
Comment: Natural remedies for cancer, like: diet, vitamins, minerals and other supplements are NEVER addressed. Neither are chemicals and wi-fi saturated environment recognized for the rise in these new epidemics. Instead ... what do they do? They normalize it. Like it’s just the new thing you need to do. Change nothing and adapt to these new circumstances of mutilation kids. ...
Gasp, Turkish President Observes Reality: "Women and Men Created Differently"
2014 11 25
Comment: Wow, a politician that manage to observe reality. Shocking and offensive no doubt, I wonder how the pro Muslim Feminists in Scandinavia and the rest of the West will react to this. Turkish President Recep Tayyip Erdogan set off a new controversy on Monday, declaring that women are not equal to men and accusing feminists of not understanding the special ...
The Libertarian Case for Free Trade And Restricted Immigration
2014 11 25
It is frequently maintained that "free trade" belongs to "free immigration" as "protectionism" does to "restricted immigration." That is, the claim is made that while it is not impossible that someone might combine protectionism with free immigration, or free trade with restricted immigration, these positions are intellectually inconsistent, and thus erroneous. Hence, insofar as people seek to avoid errors, they ...
Ferguson Verdict: "No Probable Cause" – Predictably Street Mobs Let Off Gunshots, Riots Begin
2014 11 25
A St. Louis County attorney and spokesperson for the prosecution, Bob McCulloch (D), just delivered a live address from Clayton, Missouri on the Grand Jury’s decision on the Officer Wilson vs Michael Brown case. A total of 5 indictment charges were presented to the Grand Jury, and the jury found “no probable cause” on all five charges. The family of Michael ...
Sweden’s military drills for an invasion of Stockholm
2014 11 24
During two weekends in November, units from the Life Guards, Command and Control and Luftvärnsregementet practiced defense of Stockholm. Stockholm, and its vital public infrastructure, will be defended in the event of armed aggression, and it must be practiced. Therefore joined several units to defend the strategically important locations in and around the capital. Comment: Pro NATO influences in Sweden once again ...
More News »