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Bursts of neural activity in an entire larval zebrafish , k' Q7 {3 j0 F- d& [# \brain expressing a calcium reporter in every neuron. Two different time points , V" G7 c: C: u. p7 Kare shown in red and blue. Image by Philipp Keller, Misha Ahrens and Kristin : u: q6 P, l8 w. D2 g) v- x+ P" r \Branson (Howard Hughes Medical Institute, Janelia Farm Research Campus). 3 |1 c! v( K4 }+ J