TABLE II.
Means across subjects for pitch ranking, electrode discrimination, and normalized ECAP separation indices (Σ). Pitch-ranking and electrode-discrimination data are reported as both percent correct and d′ values. Boldface indicates mean values that statistical analyses (see text) indicated were significantly different (p = 0.05 or better) for the adjacent PE pairs (PE-PE) than for the two DE pairs (PEB-DE and DE-PEA). The two DE pairs were not significantly different.
| Basal | Middle | Apical | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| PEB-DE | DE-PEA | PE-PE | PEB-DE | DE-PEA | PE-PE | PEB-DE | DE-PEA | PE-PE | ||
| Pitch ranking | % correct | 68.2% | 65.7% | 74.1% | 67.6% | 63.2% | 75.8% | 73.5% | 69.1% | 84.6% |
| d′ | 0.83 | 0.90 | 1.32 | 0.79 | 0.69 | 1.34 | 0.99 | 0.94 | 1.75 | |
| Electrode discrimination | % correct | 48.6% | 49.3% | 66.0% | 50.7% | 49.0% | 62.6% | 50.1% | 55.8% | 73.6% |
| d′ | 0.61 | 0.69 | 1.38 | 0.69 | 0.70 | 1.29 | 0.69 | 0.84 | 1.71 | |
| ECAP separation index | Σ | 1.16 | 1.36 | 1.78 | 1.31 | 1.46 | 2.22 | 0.93 | 1.10 | 1.16 |