Medical Science
29/10/1910
Veterans Affairs Medical Center in Minneapolis and the University of Minnesota in the U.S. have discovered a correlation between increased activity in the circuits of the right brain and suffering resulting from the involuntary memories of traumatic stress disorder (PTSD).
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The researchers, who publish their work in the Journal of Neural Engineering ', used a technique called magnetoencephalography (MEG), which involves analysis of the occurrence of magnetic charges that occur when populations of neurons in the brain connect and communicate. The method allowed the authors found differences in brain activity in PTSD sufferers and those with normal mental health. The findings reveal a clear difference between the channels of communication for patients and healthy individuals.
The trial included 80 individuals with PTSD confirmed, many of them who had done military service in Vietnam, Afghanistan and Iraq, 18 individuals in remission and 284 healthy subjects. All participants had to wear a helmet to the test MEG while fixed at a point 65 cm in front of them for 60 seconds.
The researchers found a difference between communication in the temporal and parieto-occipital brain's right hemisphere. It is believed that the temporal cortex, consistent with previous findings on the effects of electrical stimulation during brain surgery, is responsible for these people to relive past experiences.
The authors stand out as particularly interesting that the brains of patients there was a hyperactive state despite the absence of immediate external stimuli, as observed in a free state assignments.
Researchers indicate that the differences found between patients and controls are documented in this state free of duties, without evoking traumatic experiences and, therefore, reflects the status of neuronal interactions in a permanent state.
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