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Coma Patients Brain Networks Reorganize. What is going on inside the heads of individuals in a coma has been steeped in mystery. Now, a new study finds coma patients have dramatically reorganized brain networks, a finding that could shed light on the mystery of consciousness. Compared with healthy patients in the study, high- traffic hubs of brain activity are dark in coma patients while more quiet regions spring to life.
Mayan Majix - Learn about the Maya, Mayan Calendar products, Mayan Astrology, Jewelry, Ceremonial items, Mayan Superfoods, Mayan Photo Gallery, Ian Xel Lungold. A footballer woke from a coma after a horrific car crash thinking he was Hollywood actor Matthew McConaughey and speaking fluent French – despite only having a basic grasp from school. Rory Curtis, 25, suffered a.
What is going on inside the heads of individuals in a coma has been steeped in mystery. Now, a new study finds coma patients have dramatically reorganized brain networks, a finding that could shed light on the mystery of.
Consciousness may depend on the anatomical location of these hubs in the human brain network," said study co- author Sophie Achard, a statistician at the French National Center for Scientific research in Grenoble. The findings have several important implications, said Indiana University neuroscientist Olaf Sporns, who was not involved in the study. It gives us a handle on what may be different between healthy conscious people and people who have loss of consciousness," Sporns told Live. Science. "The traffic patterns have totally reorganized. And maybe it's the rerouting of the traffic patterns that underlies the loss of consciousness," or the mysterious ability to be self- aware that seems to set humans apart from other animals. Top 1. 0 Mysteries of the Mind].
In the future, the research could also help doctors determine which coma patients are likely to recover based on activity in high- traffic brain regions, he said. The research could potentially even suggest ways to stimulate the brains of patients in a coma to improve their outcome, he added. The study was published today (Nov.
Proceedings of the National Academy of Sciences. Mystery of consciousness.
Scientists still don't understand exactly how human consciousness works, but the twilight state of a coma could reveal some insight. Past research revealed that a person in a coma is closer to being anesthetized than being asleep.
Other studies have found that vegetative and minimally conscious patients have very different brain activity. But for the most part, it was hard to find obvious differences in brain functioning between healthy patients and those who have lost consciousness.
To tease out these differences, Achard and her colleagues took functional magnetic resonance imaging (f. MRI) brain scans of 1. Some patients, who had lost oxygen to the brain for up to 3. The team tracked 4. They then correlated synchronized increases or decreases in activity between different regions. In healthy patients, about 4.
These high- traffic hubs, like busy airports, apparently process much of the electrical firing in the brain. Rerouted brain traffic. But in the coma patients, many of these hubs were darkened, and other, normally peripheral regions took their place.
Intriguingly, coma patients had fewer hubs in a region called the precuneus, which is known to play a role in consciousness and memory. These central nodes of brain activity may hold the key to consciousness, Achard told Live.
Science. Because they direct so much of the brain's traffic, they also require more oxygen and thus may be more vulnerable to its loss, the study authors write in the journal article. Follow Live. Science on Twitter @livescience.
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