Dombeck Dopamine Axon (VIDEO) Northwestern University This video is under embargo. Please login to access this video. To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Caption This movie shows rapid signaling dynamics in dopamine axons that have never before been observed in a brain. Each thin orange fiber is an individual dopamine axon, approximately 1 micrometer in diameter. The movie was captured using a powerful new imaging technique. Credit Northwestern University Usage Restrictions Must use credit License Licensed content 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.