Center for Neuroscience at the University of Pittsburgh 1 article published in JoVE Neuroscience In-Vivo Calcium Imaging of Sensory Neurons in the Rat Trigeminal Ganglion Jeremy Y. Gedeon1,2,3, Jorge Baruch Pineda-Farias2,3, Michael S. Gold2,3 1Center for Neuroscience at the University of Pittsburgh, 2Department of Neurobiology, University of Pittsburgh School of Medicine, 3Pittsburgh Center for Pain Research, University of Pittsburgh Genetically encoded calcium indicators (GECI) enable a robust, population-level analysis of sensory neuron signaling. Here, we have developed a novel approach that allows for in vivo GECI visualization of rat trigeminal ganglia neuron activity.