Table 2.

Statistical Poisson Analysis of Post-stimulatory Spike Activities After 5-fold Gastrointestinal Electrical Stimulation

Location	Electrode type	Post-stimulatory minute 1				Post-stimulatory minute 2				Post-stimulatory minute 3
		500 μsec		1000 μsec		500 μsec		1000 μsec		500 μsec		1000 μsec
		30 Hz	130 Hz	30 Hz	130 Hz	30 Hz	130 Hz	30 Hz	130 Hz	30 Hz	130 Hz	30 Hz	130 Hz
Stomach	Hook needle	0.060	0.129	0.095	0.268	0.113	0.046	0.041	0.068	0.240	0.140	0.092	0.030
	Hook-wire	0.093	0.741	0.572	0.051	0.019	0.016	0.065	0.002	0.072	0.617	0.123	0.007
Duodenum	Hook needle	0.117	0.084	0.143	0.889	0.360	0.143	0.267	0.291	0.657	0.369	0.291	0.110
	Hook-wire	0.001	0.000	0.000	0.005	0.007	0.022	0.028	0.263	0.214	0.082	0.307	0.033
Jejunum	Hook needle	0.005	0.007	0.024	0.018	0.019	0.004	0.000	0.008	0.050	0.003	0.002	0.001
	Hook-wire	0.009	0.000	0.002	0.001	0.013	0.000	0.000	0.000	0.015	0.001	0.001	0.000
Ileum	Hook needle	0.020	0.001	0.006	0.001	0.172	0.021	0.016	0.005	0.004	0.001	0.009	0.034
	Hook-wire	0.039	0.002	0.154	0.013	0.010	0.042	0.066	0.074	0.001	0.001	0.016	0.054
Colon	Hook needle	0.716	0.872	0.716	0.788	1.000	0.113	0.267	0.967	0.970	0.640	0.583	0.133
	Hook-wire	0.034	0.095	0.003	0.129	0.008	0.021	0.113	0.346	0.006	0.064	0.491	0.107

The effects of multilocular electrical stimulation on the gastrointestinal spike counts were assessed by Poisson analysis. Differences between average baseline and post-stimulatory spike activity was tested for each gastrointestinal part, electrode type (hook needle or hook-wire), and electrical stimulation parameter (500 microseconds (μsec) or 1000 μsec, 30 Hz or 130 Hz with 30 seconds and 25 mA). Numbers represent P-values in Poisson analysis. A P < 0.05 was considered statistically significant.