In-Vivo Glutamate Imaging (VIDEO) Howard Hughes Medical Institute 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 SLAP microscopy allows scientists to watch the activity of hundreds of synapses at a time in the brains of living animals. Here, red bursts mark synapses of a mouse neuron being excited by the neurotransmitter glutamate. Credit Podgorski Lab Usage Restrictions None 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.