Electric Stimulation of Brain Releases Powerful Painkiller

Researchers have been exploring delivering electricity through sensors on the skulls of chronic migraine patients and have found a decrease in the intensity of pain of their headaches. A recent study published in Frontiers in Psychiatry has shown that when electricity is sent to certain regions in the brain of a patient with chronic, severe facial pain it releases an opiate-like substance and powerful painkiller. In the study, researchers administered a radiotracer that reached important brain areas in a patient with trigeminal neuropathic pain. They then applied electrodes and electrically stimulated the skull right above the motor cortex  for 20 minutes during a PET scan which is known as transcranial direct current stimulation (tDCS). The radiotracer was designed to measure the local brain release of mu-opioid, a natural substance that alters pain perception. The researchers argue that this is the … Read more