Fig. 6. Cytoplasmic calcium signalling synchronizes with low frequency oscillating stimulus. Heat map of 50 cells responding to (A) 50 mHz (20 s) and (B) 5 mHz (200 s) stimulation of 100 μM H₂O₂. Single cell traces are graphed from selected cells responding to (C) 50 mHz and (D) 5 mHz stimulation of 100 μM H₂O₂. The population is visibly synchronizing to the stimulus at 5 mHz, while response heterogeneity exists among populations under each stimulation condition.