Neuron with Synapses (IMAGE) Johns Hopkins Medicine Caption This is a mouse neuron with synapses shown: Red dots mark excitatory synapses, while green dots mark so-called inhibitory synapses. Credit Kamal Sharma/Johns Hopkins University School of Medicine Usage Restrictions Include credit information 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.