Fig. 3.

Graphical representation of  the weight function and smoothing corresponding to a 2-sided exponential moving average with the trend smoothness parameter set to 20. For the original Ca²⁺ profile (in black), the smoothing is given by the dotted red curve. To visualize the smoothing calculation, at the dashed blue line, the smoothed value is computed by weighting the values of the original profile proportionally with the weight function shaded in light blue. Notice especially the double-weight given to the value at the blue line, as it is the only point in common to both the forward- and backward-looking moving averages