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Machines Pensantes
La vie sous toutes ses formes
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L'élagage de l'arbre neuronal: l'AUTISME pourrait être causé par un élagage déficient, conduisant à un trop grand nombre de connections nerveuses

L'élagage de l'arbre neuronal: l'AUTISME pourrait être causé par un élagage déficient, conduisant à un trop grand nombre de connections nerveuses | Machines Pensantes | Scoop.it

Lors des premiers instants de leur vie, les neurones se comportent comme des ronces. Ils émettent une multitude de longues, fines branches qualifiées de terminaisons axonales. Au cours du développement, ces arborescences axonales ressemblent de moins en moins à des affreuses ronces et de plus en plus à un bel arbre. Le secret de ce changement : comme pour les arbres, il s'agit de l'élagage. Ce travail de jardinage du système nerveux est primordial à son bon fonctionnement…

 

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Laboratoire du Docteur Avraham Yaron : http://bit.ly/16EvVNh

 


Via Serge Meunier
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Via Shamengo : Quand mettre en mouvement vos YEUX peut VOUS SAUVER

Via Shamengo : Quand mettre en mouvement vos YEUX peut VOUS SAUVER | Machines Pensantes | Scoop.it

Traiter des syndromes de stress post-traumatique par le mouvement des yeux, telle est la méthode mise au point par Francine Shapiro à la fin des années 80. En lieu et place d'une longue thérapie, quelques séances pourraient suffire à libérer une personne souffrant d'un traumatisme grâce à cette technique de stimulation sensorielle unique : l'EMDR…
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Wiki/Eye Movement Desensitization and Reprocessing : http://fr.wikipedia.org/wiki/Eye_movement_desensitization_and_reprocessing

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Thought Experiment: Build a Supercomputer Replica of the Human Brain.

Thought Experiment: Build a Supercomputer Replica of the Human Brain. | Machines Pensantes | Scoop.it
Neuroscientist Henry Markram says he can build a supercomputer replica of the human brain. Now he has $1.3 billion to prove it.

"Even by the standards of the TED conference, Henry Markram’s 2009 TEDGlobal talk was a mind-bender. He took the stage of the Oxford Playhouse, clad in the requisite dress shirt and blue jeans, and announced a plan that—if it panned out—would deliver a fully sentient hologram within a decade. He dedicated himself to wiping out all mental disorders and creating a self-aware artificial intelligence. And the South African–born neuroscientist pronounced that he would accomplish all this through an insanely ambitious attempt to build a complete model of a human brain—from synapses to hemispheres—and simulate it on a supercomputer. Markram was proposing a project that has bedeviled AI researchers for decades, that most had presumed was impossible. He wanted to build a working mind from the ground up.

In the four years since Markram’s speech, he hasn’t backed off a nanometer. The self-assured scientist claims that the only thing preventing scientists from understanding the human brain in its entirety—from the molecular level all the way to the mystery of consciousness—is a lack of ambition. If only neuroscience would follow his lead, he insists, his Human Brain Project could simulate the functions of all 86 billion neurons in the human brain, and the 100 trillion connections that link them. And once that’s done, once you’ve built a plug-and-play brain, anything is possible. You could take it apart to figure out the causes of brain diseases. You could rig it to robotics and develop a whole new range of intelligent technologies. You could strap on a pair of virtual reality glasses and experience a brain other than your own..."


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gawlab's curator insight, May 19, 2013 11:06 AM
"Markram’s grand vision to simulate an entire brain’s worth of neurons will require epic computing power. The project’s first Blue Gene supercomputer was robust enough to simulate a single neocortical column in a rat (its whole brain has the equivalent of 100,000 columns). The Human Brain Project will eventually need an astronomical amount of memory and computational speed—at least 100 petabytes of RAM and an exaflop—to make its sims possible." —Katie M. Palmer