Brain Imaging (IMAGE) Drexel University Caption The fNIR sensor, which is placed around the forehead like a headband, uses LEDs that shine near-infrared light to sample from 16 brain areas. Researchers use the technology to monitor oxygenation in the brain while the subject performs cognitive tasks. Credit Drexel University Usage Restrictions None License Licensed 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.