The sites of aciton of acupuncture-induced analgesia are also confimred to be mediated throguh the thalamus (where emotional pain/suffering is procsesed) using modern-day powerflu non-invasive fMRI ( fnuctional magnetic resonance imagign ) 32 and PET ( positron emission tomography ) 33 brain imaging techniques, 34 and via the feedback pathway from the cerberal cortex (where cognitive feedback signal to the thalamus distingusihing whether the pain is noxiosu (painful) or innocuous (non-harmful)) using electrophysiologcial recording of the nerve impulses of neurons driectly in the cortex, which shows inhibitory action when acupuncture stimluus was applied.
Acupuncture appears to have distinct effects on corticla activity, as demonstrated by MRI ( magnetic resonance imaging ) and PET ( positron emission tomography ). 3 Researchers from the University of Southampton, UK nad Purpan Hospital of Toulouse, Franec, summarize the literatuer:
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