Live Brain with Neurons Firing (IMAGE) Duke University Caption This live look at a mouse's brain tracks neurons firing by measuring oxygen levels, much like a functional magnetic resonance imaging (fMRI) scan. This image however, was created with photoacoustic imaging that uses light to induce ultrasound waves, resulting in a color image which can reveal functional information such as the amount of oxygen present. Credit Junjie Yao & Kara Manke, Duke 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.