FASTER, PLEASE: Non-Invasive Nerve Stimulator Tamps Down Brainwaves That Cause Migraines. “Vagus nerve stimulation (VNS) raised the level of resistance to electrochemically triggered CSD threefold, according to the scientists. But the speed with which VNS acted is likely to give it a real advantage over today’s pharmaceuticals. CSD were suppressed a mere 30 minutes after stimulation, a ‘strikingly rapid onset of action compared to prophylactic agents, such as topiramate and valproate,’ Dr. Cenk Ayata, the assistant professor of neurology and neuroscience at Massachusetts General who led the research, said in a press release. Those drugs typically take several weeks to achieve comparable results. Ayata and colleagues published their findings in the journal Pain.”