a,d, Representative raw 10-minute LFP traces (top) and time expanded segments (bottom) from either unmixed iCtrl or Mut Cx+GE fusion organoids, or Mut Cx+iCtrl GE or iCtrl Cx+Mut GE mixed fusion organoids. b,e, Morlet plots derived from the time expanded segments shown in a,d. c, f, Periodogram derived from the entire 10 min traces shown in a,d.