Axon connections (IMAGE) University of California - San Diego Caption Shown here in green are branches, or axons, from cells in the substantia nigra region that connect to the midbrain. Red spots label where cells connect. Credit Lauren McElvain / Kleinfeld lab / UC San Diego) Usage Restrictions Must be used in conjunction with Neuron paper on brain connectivity. 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.