Mice Develop Key Brain Circuits after Birth (image) Duke University Medical Center Share Print E-Mail Caption A mouse pup learns to use its whiskers to sense objects at about the second week of life. The nerve connections that enable this activity are helping researchers at Duke Medicine learn how human brains develop and function. Credit Duke Medicine 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.