ot be shifted.
 
     Dejittering requires the definition of threshold crossing time (threshT) and
     threshold level vector (threshV) with both low and high thresholds (use +/-
     Inf for either the low or the high threshold if it was not used in extracting
     the waveforms).  The 'center-of-mass' method considers the region following
     threshT that remains below/above threshold and computes
          (sum_t[t * (v_t - thresh)] / sum_t[(v_t - thresh)]).
     to obtain the location of the peak.  Th