failed to reach significancep = 0.07
When analyzing the behavior of animals in the 2 control groups separately, the difference between ArchT + light and Ct ArchT was again significant; however, the difference relative to Ct light failed to reach significance (Wilcoxon rank sum test comparing median change in freezing of ArchT + light and Ct light groups, p = 0.07, rank sum = 40; ArchT + light and Ct ArchT groups, p = 0.017, rank sum = 31) (also see S3 Fig ).