Steps of data processing to create standardized area weighted distributions of signal transfer values. Example is based on current transfers of MN C-IC82 but steps are similar for other measures of signal transfers we used. (A) Frequency distribution of somatopetal current transfers measured from mid-points of each compartment. These raw values were area weighted (B) to give proportionally bigger weight to transfers from compartments with bigger surface area. Then the area weighted distribution was standardized (C) to eliminate variable size effects of MNs on signal transfers. Shape of standardized and area weighted distribution of transfers was quantified by the 10th, 25th, 50th, 75th and 90th percentiles of the distribution (see lower horizontal axis in part C).