Visualization 4 Masaaki Sato Yuki Motegi Keiko Gengyo-Ando Masamichi Ohkura Junichi Nakai Shogo Yagi 10.6084/m9.figshare.5263477.v2 https://opticapublishing.figshare.com/articles/media/Visualization4/5263477 Synchronous network activity in the amygdala imaged using the fast varifocal microendoscope (Fig. 6(c)). Images acquired quasi-simultaneously at different depths are shown in top (0 V) and bottom (0.35 V, 120 μm below) panels. The movie is spatially binned by two to reduce the file size. The playback speed is 5x faster than the speed of real activity. Time stamps are indicated in the upper left corner of each panel. 2017-08-11 15:26:15 Gradient-index lenses Endoscopic imaging Fluorescence microscopy Nonlinear microscopy Three-dimensional microscopy