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Imagination and reality | Neuro-patch
ScienceDaily has an item (here) on a paper (D. Dentico, B.L. Cheung, J. Chang, J. Guokas, M..e Boly, G. Tononi, B. Van Veen. Reversal of cortical information flow during visual imagery as compared to visual perception. NeuroImage, 2014; 100: 237) looking at EEC dynamics during thought. The researchers examined electrical activity as subjects alternated between imagining scenes and watching video clips. Areas of the brain are connected for various functions and these interactions change as during processing. The changes to network interactions appear as movement on the cortex. The research groups are trying to develop tools to study these changing networks: Tononi to study sleep and dreaming and Van Veen to study short-term memory. The activity seems very directional. "During imagination, the researchers found an increase in the flow of information from the parietal lobe of the brain to the occipital lobe -- from a higher-order region that combines inputs from several of the senses out