Table 1.
Measurements of afferent volley
| 25% SNAP | 50% SNAP | 1.2 × MT | 75% SNAP | 100% SNAP | 2.4 × MT | |
|---|---|---|---|---|---|---|
| MN, μV | 8.53 | 10.95 | 11.54 | 14.09 | 23.09 | |
| SE | 3.13 | 3.81 | 3.14 | 4.61 | 6.28 | |
| 11.25 | ||||||
| MN, %Max | 20 | 44 | 49 | 71 | 100 | |
| SE | 10.2 | 15.3 | 23.6 | 19.7 | 0.00 | |
| 47% | ||||||
| MN, mA | 9.16 | 11.82 | 12.64 | 15.05 | 24.88 | |
| SE | 3.77 | 4.40 | 4.23 | 5.27 | 8.48 | |
| DN, μV | 0.50 | 1.29 | 1.97 | 2.4 | ||
| SE | 0.08 | 0.13 | 0.19 | 0.25 | ||
| DN, %Max | 21 | 55 | 84 | 100 | ||
| SE | 10.7 | 10.5 | 14.3 | 0.00 | ||
| DN, mA | 3.85 | 5.40 | 7.30 | 11.43 | ||
| SE | 1.57 | 1.56 | 2.37 | 3.76 | ||
For measurements of median nerve (MN) sensory nerve action potential (SNAP), headings indicate intended values of stimulation intensity, with the actual group-averaged intensity collected represented below as actual amplitude (μV), in %SNAPmax (%Max), and in current (mA) with standard error (SE). Actual values obtained included 44% and 49% SNAPmax (at 1.2× MT), and these were not statistically different. Data from these intensities were averaged to create a single intensity at 47%. For measurements of digital nerve (DN) SNAP, headings indicate intended values of stimulation intensity, with the actual group-averaged intensity collected represented below as actual amplitude (μV), in %SNAPmax (%Max), and in current (mA) with standard error (SE).