TREK1 Neurons (IMAGE) DOE/Lawrence Berkeley National Laboratory Caption TREK1 potassium ion channels, fluorescing green in these cultured neurons, have been linked to the regulation of human emotional states. Credit Image from Isacoff group 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.