Researchers using SPECT have discovered that experienced spirit mediums display lower levels of activity in the parts of the brain related to reasoning, planning, moving, generating language and solving problems while they were in a trance compared with when they were not. The lower level of activity also led to more complex writing samples compared to when the mediums were not entranced, according to a study published in PLOS ONE. In less experienced mediums, researchers observed increased levels of activity while they were in a trance. The findings cannot be definitively explained yet, but they indicate "there are neurophysiological correlates of this state," said researcher Dr. Andrew Newberg of the Jefferson-Myrna Brind Center of Integrative Medicine in Philadelphia.
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