Theta Power (IMAGE) Picower Institute at MIT Caption Researchers saw sharp increases in the power of theta frequency rhythms (warmer colors) in the frontal cortex as volunteers performed an experimental task. Credit Widge et. al. Usage Restrictions with credit 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.