Table 2. The comparison of standard features of signals observed from the training and test sets.

The sAP (Type A only) amplitudes exhibit smaller amplitudes in the test set compared to the training set (p < 0.01—marked ‘**’ in the table), the reason for which is explained in the text. Rest of the parameters have comparable values for training and test sets (p > 0.05). The parameter values are given as mean ± SD. Number of signals used in Training set: 2487 sEJPs and 1013 sAPs; in Test set: 477 sEJPs and 453 sAPs.

Signal Type	Parameter	Training Set	Test Set
sEJP	Amplitude (mV)	9.23 ± 3.56	9.08 ± 3.11
	Rise Time (ms)	22.29 ± 13.86	22.57 ± 15.13
	Fall Time (ms)	9.23 ± 3.56	9.08 ± 3.11
sAP	Amplitude (mV) **	52.49 ± 7.60	49.33 ± 9.27
	Half Width (ms)	9.62 ± 4.03	9.83 ± 4.99
	AP Duration (ms)	164.47 ± 81.58	165.70 ± 97.04