Table 4. Quantitative estimates of the maximum electrode movement allowed in % positioning the electrodes in the x and y axes to achieve a pre-specified reproducibility given by the intra-class correlation (ICC).
| ICC |
x-axis, % |
y-axis, % All | |
|---|---|---|---|
| HC, HP | LP, LC | ||
| ≥0.9 | 13.6 | 8.7 | 37.5 |
| ≥0.8 | 18.5 | 12.9 | 44.6 |
| ≥0.7 | 22.2 | 16.4 | 46.6 |
| ≥0.6 | 24.8 | 19.6 | 47.5 |
| ≥0.5 | 26.9 | 22.7 | 48.3 |
| ≥0.4 | 30.0 | 26.1 | 48.9 |
| ≥0.3 | 33.2 | 29.2 | 49.5 |
| ≥0.2 | 36.1 | 32.7 | 50.0 |
The maximum permissible electrode misplacement decreases with increasing the reproducibility. Electrodes nomenclature: HC, high current; HP, high potential; LP, low potential; LC, low current.