TABLE II.
Upper limit of temporal pitch perception and slope of the rate pitch-rank function above 300 pulses per second (pps) presented for the three comparisons. Note. The slope values of the rate pitch-rank function represent the change in log-transformed rate necessary for one unit increase in rate-pitch rank. R2 represents variance explained by the fitted slopes.
| Experiment | Analysis | Condition | M004 | M013 | M014 | M020 | M030 | M031 | M032 | M035 |
|---|---|---|---|---|---|---|---|---|---|---|
| (i) Single-electrode apical vs mid-array stimulation | Slope (R2) | Single apex | 0.13 (1.0) | 0.23 (0.59) | −0.11 (0.95) | 0.15 (0.80) | 0.11 (0.04) | 0.16 (0.96) | −0.51 (0.53) | −0.03 (0.01) |
| Single mid | −0.24 (0.87) | 0.06 (0.06) | 0.06 (0.05) | 0.19 (0.70) | 0.18 (0.49) | −0.09 (0.24) | 0.18 (0.99) | 0.10 (0.24) | ||
| Upper limit (pps) | Single apex | 981 | 441 | 207 | 686 | 353 | 833 | 412 | 335 | |
| Single mid | 335 | 524 | 479 | 767 | 625 | 422 | 981 | 509 | ||
| (ii) Single-electrode vs multi-electrode apical stimulation | Slope (R2) | Single apex | 0.16 (0.96) | −0.12 (0.74) | 0.33 (0.38) | 0.17 (0.99) | −0.22 (0.75) | 0.17 (0.07) | −0.18 (0.54) | 0.50 (0.89) |
| Multi apex | −0.05 (0.03) | 0.16 (0.79) | 0.23 (0.36) | 1.17 (0.90) | −0.09 (0.05) | 0.02 (0.00) | 0.31 (0.60) | 0.12 (0.70) | ||
| Upper limit (pps) | Single apex | 809 | 288 | 264 | 980 | 335 | 385 | 335 | 501 | |
| Multi apex | 686 | 540 | 620 | 475 | 335 | 479 | 807 | 686 | ||
| (iii) Single-electrode apical stimulation: Session 1 vs Session 2 | Slope (R2) | Session 1 | 0.16 (0.96) | −0.12 (0.74) | 0.33 (0.38) | 0.17 (0.99) | −0.22 (0.75) | 0.16 (0.96) | −0.18 (0.54) | −0.03 (0.01) |
| Session 2 | 0.13 (1.0) | 0.23 (0.59) | −0.11 (0.95) | 0.15 (0.80) | 0.11 (0.04) | 0.17 (0.07) | −0.51 (0.53) | 0.50 (0.89) | ||
| Upper limit (pps) | Session 1 | 809 | 288 | 264 | 980 | 335 | 833 | 335 | 335 | |
| Session 2 | 981 | 441 | 207 | 686 | 353 | 385 | 412 | 501 |