FIG. 1.

The effect of GJ_scale on ΔV_mem. The x axis represents GJ_scale (i.e., the density of GJs relative to an arbitrary reference); the y axis is ΔV_mem (the difference between the highest and lowest V_mem anywhere in the worm). Each portion of the graph is also labeled with the worm's overall pattern of heads and tails, as read from the peaks and valleys of V_mem distribution across the worm. The right side of the graph shows ΔV_mem forced to near zero when GJs are too dense. As we move to the left, the lessening GJ conductivity allows the formation of more and more voltage islands and allows V_mem to swing high and low more and more times (where, e.g., HTH would represent a V_mem peak at each end with a valley in the middle).