Daytime BK Channel Activity (image) Rockefeller University Press Caption A study in The Journal of General Physiology shows how changes in BK channel expression pattern might affect circadian rhythms. BK channels with a SRKR splice variant had reduced impact on neurons during the day. Credit Shelley et al., 2013 Usage Restrictions Reporters may freely use these materials in news coverage, with the appropriate credit information. 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.