nearing significancep = 0.0690
The addition of NiCl 2 (to block calcium currents) to the TTX solution did not block SDs but reduced SD amplitude further in paired recordings in a trend nearing significance (paired t -test, n = 9, p = 0.0690, 3.77 ± 0.88 mV before NiCl 2 application, 2.66 ± 0.64 mV after NiCl 2 application, Table 1 ).