Table 1.

Four Types of APs Obtained in hiPS and ES Cell-Derived Neurons

AP type	Peak amplitude (mV)	Upstroke slope (mV/ms)	½ AP width (ms)	Firing frequency (Hz)
Abortive APs	38.78±10.23#	6.03±1.75#	11.71±3.54*	1
Single APs	65.28±7.86	18.49±2.90	7.47±1.03	1
Multiple APs	61.29±5.36	14.93±6.81	10.56±4.76	4.00±1.53
Repetitive APs	63.09±3.26	22.59±3.15§	6.16±1.41§	15.44±2.35

^#P<0.01, abortive APs compared to the 3 other AP types. ^*P<0.01, abortive APs compared to single and repetitive APs. ^§P<0.05, repetitive APs compared to single and multiple APs. Mean±SEM. n=16–34 cells in each group.

APs, action potentials; iPS, induced pluripotent stem; ES, embryonic stem.