To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Movie S4. Variability of spontaneous GCaMP6s signals in astrocytes. Five-minute movie, taken at 1 Hz and shown at 15 fps, of GCaMP6s-expressing astrocytes. Note the desynchronized Ca2+ signals across the imaging field. Astrocytes regulate cortical state switching in vivo Kira E. Poskanzer, and Rafael Yuste PNAS. 2016. DOI: 10.1073/pnas.1520759113 Download Original Video Browse All Videos »