Table 4.

Stimulus–response paired-pulse ratios

Intensity	Mean	SE	95% Confidence interval
			Lower bound	Upper bound
20	0.036	0.016	0.004	0.067
25	0.067	0.024	0.019	0.116
30	0.103	0.025	0.053	0.153
35	0.141	0.029	0.083	0.200
40	0.121	0.024	0.073	0.168
45	0.099	0.024	0.050	0.148
50	0.077	0.025	0.028	0.127
55	0.034	0.022	−0.010	0.079
60	0.000	0.022	−0.045	0.044
65	−0.035	0.020	−0.076	0.006
70	−0.036	0.019	−0.074	0.003
75	−0.043	0.021	−0.085	0.000
80	−0.068	0.022	−0.111	−0.024
85	−0.051	0.020	−0.092	−0.011
90	−0.063	0.022	−0.108	−0.018
95	−0.093	0.025	−0.144	−0.042
100	−0.114	0.037	−0.188	−0.040

Mean and SE of the PPR for each stimulation intensity regardless of age and genotype.