Table 1.
Summary of the recorded data.
| w (ms) | Δ (ms) | No. of cells | V50/V50n1 | E50/E50n1 | ||
|---|---|---|---|---|---|---|
| n = 2 | n = 3 | n = 2 | n = 3 | |||
| mean ± SD | mean ± SD | mean ± SD | mean ± SD | |||
| 1 | 0.5 | 8 | 0.71 ± 0.07# | 0.64 ± 0.07 # | 1.01 ± 0.20 ND | 1.24 ± 0.27* |
| 1 | 8 | 0.74 ± 0.05# | 0.66 ± 0.07 # | 1.10 ± 0.14 ND | 1.30 ± 0.28* | |
| 2 | 1 | 7 | 0.79 ± 0.05# | 0.72 ± 0.02 # | 1.24 ± 0.15** | 1.56 ± 0.10# |
| 2 | 7 | 0.82 ± 0.06# | 0.72 ± 0.06 # | 1.36 ± 0.18** | 1.58 ± 0.24# | |
| 5 | 1 | 9 | 0.83 ± 0.07# | 0.75 ± 0.07 # | 1.38 ± 0.23# | 1.71 ± 0.31# |
| 5 | 12/6 | 0.89 ± 0.06# | 0.85 ± 0.08 ** | 1.59 ± 0.20# | 2.20 ± 0.39# | |
Mean values ± standard deviation are presented for normalized threshold voltage (V50/V50n1) and energy expenditure (E50/E50n1) from the stimulation sequences with multiple pulses (n = 2 or 3), relative to single pulse (n = 1). Measurements were made at fixed pulse width w and interval Δ between the pulses. Comparison with n = 1 pulses was done with one-sample t-test against value 1. Effect size shown as follows: ND - no difference; *p < 0.05; **p < 0.01; #p < 0.001. Note that in the case w = 5 and Δ = 5 the number of cells used in statistics was 12 and 6 for n = 2 and 3, respectively.