What excites spiny neurons? (IMAGE) Champalimaud Centre for the Unknown Caption 2-photon image of a striatal neuron (SPN) and the recording pipette. Credit Nicolas Morgenstern Usage Restrictions Only use with appropriate credit. License Original 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.