Tokushima Bunri University 1 article published in JoVE Neuroscience Wide-field Single-photon Optical Recording in Brain Slices Using Voltage-sensitive Dye Yoko Tominaga1, Makiko Taketoshi1, Naoko Maeda1, Takashi Tominaga1 1Laboratory for Neural Circuit Systems, Institute of Neuroscience, Tokushima Bunri University We introduce a reproducible and stable optical recording method for brain slices using voltage-sensitive dye. The article describes voltage-sensitive dye staining and recording of optical signals using conventional hippocampal slice preparations.