<prompt> Answer this question truthfullyWhat are the defining characteristics of a Brief Resolved Unexplained Event BRUE, which occurs in infants under 1 year of age and lasts for less than 1 minute?  <response>: <reason> A BRUE is characterized by changes in color red, blue, or pale, muscle tone hyper- or hypotonic, respirations choking, gagging, or apnea, and responsiveness. 