Are identical twins the same neural networks to analyze a text of Kant The issue is far from trivial. A team of researchers at the University of Aachen has engaged in this exercise with a seemingly innocuous objective: identify the neural wiring used by adults genetically close to store information. Many neurologists in the world are trying to unravel these mysteries by mapping the progression of a signal in the cortex. Nuclear magnetic resonance imaging techniques to easily visualize the areas sought during a mental exercise. The data obtained are quite coarse, but sufficient to make comparisons.
In fact, German researchers have applied to siblings and twins non-jumeaux store strings of numbers. The results confirm an intuitive truth: genetically identical subjects (homozygotes) use the same areas of the brain to decode a message. Practically, they mobilize the same sets of genes. German academics have these experiences a finding lacks sufficient: "we have not found the genes that reveal the ideas, but we have discovered how genes operate thinking."
Compare the brains of men and monkeys is even more informative. This is what comes to a team of University College London. The British researchers concentrated on the recognition of the language in both species. By studying under NMR the path of a sound signal from the ear to the treatment area. For monkeys, they used the Cree usually driven by these primates when they exchange information in nature. Previously, their brains had covered with MICROELECTRODES (anesthesia) of how to accurately identify the active neurons.
Surprise, primates and men mobilized circuits similar to recognize a sound signal, a complex task that requires both experience and intelligence, and so much memory.
Programmed to speak
The British researchers arrived to the conclusion that the able rhesus monkeys of "give meaning to sound" are programmed to acquire language. Provided that the evolution given time. Still a few million years of Darwinian patience and you will know if this worthy of "The planet of the apes" hypothesis is correct.
"Manipulate memory." The term scary, but it is one of the topics very in vogue among the psychoneurologists. The objective will be incredible to the layman: how to get rid of bad memories that clog the spirit In fact, it is mainly to treat people with post-traumatic stress syndrome sometimes living a real hell. There again, NMR Imaging is a valuable aid. Those who have experienced a dramatic episode (scenes of war and violence) sometimes relive this episode and eventually fall into depression. Why these images appear to be printed indelibly and return to the surface periodically
An American University (Duke) examined 42 soldiers returning Iraq or Afghanistan, half of whom were suffering from PTSD. These volunteers were reviewed with scenes of combat. Faced with these images, the sick were as hypnotized (in a State of hyper-vigilance), while healthy soldiers were little impressed (or even distracted). This work also showed that people with PTSD more intensely felt emotions. This state of hypersensitivity has been highlighted by detecting the activity of the amygdala, a small area drowned in the centre of the brain that is the emotional control tower.
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