Brain stimulation method (IMAGE) DOE/Argonne National Laboratory Caption Artist’s rendering shows X-rays striking radioluminescent nanoparticles in the brain, which emit red light that triggers a sodium (Na+) and potassium (K+) ion influx and thereby activates brain neurons. Credit (Image by Zhaowei Chen/Argonne National Laboratory.) Usage Restrictions none License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.