Navigation and Location Can Occur Without External Cues (image) PLOS Share Print E-Mail Caption This is an illustration of a rat using a distributed estimate to determine its location using a memory map but no external cue. Credit Rat images were obtained from a video taken by Chris Nolan (Queensland Brain Institute). The composite image was generated by Allen Cheung. Usage Restrictions None Share Print E-Mail 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.