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. 2010 Nov 30;12(2):233–251. doi: 10.1007/s10162-010-0248-x

TABLE 2.

Upper limits of temporal pitch, slopes of increase of the temporal pitch-rank functions above 300 pps and current levels needed for MCLs obtained in experiments 1 and 2

Experiment Analysis Condition S1 S2 S3 S4 S5 S6 S7
Experiment 1 (bipolar) Upper limits (pps) PSA-Apex 563 776 859 602 732 859 209
SYM-Apex 363 790 620 355 644 595 216
SYM-Middle 399 388 515 707 258 361 258
Slopes PSA-Apex 0.5 0.89 0.87 0.56 0.64 0.87 −0.33
SYM-Apex 0.04 0.92 0.56 0 0.46 0.55 −0.62
SYM-Middle −0.07 0.2 0.3 0.75 −0.38 0.07 −0.08
Experiment 1 (monopolar) Upper limits (pps) PSA-Apex 344 547 859 517 859
SYM-Apex 484 859 859 310 859
SYM-Middle 543 436 469 615 297
Slopes PSA-Apex −0.22 0.58 1 0.47 0.82
SYM-Apex 0.24 0.9 1 0.32 0.82
SYM-Middle 0.52 0.33 0.29 0.69 0.02
Experiment 2 (bipolar) Upper limits (pps) PSA-Apex 684 832 798 1,146 1,001 859
PSC-Apex 430 619 350 366 801 801
PSA-Middle 447 461 543 699 329 442
SYM-Middle 469 389 396 613 344 258
Slopes PSA-Apex 0.67 0.66 0.68 0.84 0.81 0.89
PSC-Apex 0.23 0.49 −0.13 0.2 0.61 0.75
PSA-Middle 0.13 0.41 0.54 0.72 0.29 0.32
SYM-Middle 0.34 0.21 −0.25 0.68 −0.65 0.08
MCLs (dB re 1 mA) PSA-Apex −3.88 −4.79 −7.29 −6.38 −4.55 −6.23
PSC-Apex −3.05 −3.45 −6.38 −5.55 −3.45 −5.55
PSA-Middle −2.86 −0.95 −6.97 −6.67 −3.45 −1.27
SYM-Middle −3.88 −1.43 −6.9 −6.97 −3.05 −2.57

The slopes of three apical stimuli of experiment 1 (PSA-Apex, SYM-Apex and SYM-Apex-Monop) were compared by calculating t values (cf. “Appendix”). PSA-Apex showed significantly greater slopes than SYM-Apex for S1, S3, S4 and S6 (p < 0.001) and no difference for S2 and S5. PSA-Apex also showed greater slopes than SYM-Apex-Monop for S1 and S4 (p < 0.05), no difference for S2 and S6 and a significantly smaller slope for S3 (p < 0.01). Finally, the slopes obtained with SYM-Apex-Monop were significantly greater than those obtained with SYM-Apex for S3, S4 and S6 (p < 0.01) but showed no difference for S1 and S2