Table 2.
Values of peak latencies and intervals for different postconceptional ages
| PCA (weeks) | Peak I | Peak III | Peak V | I–III interval | I–V interval | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| Latency (ms) | SD | Latency (ms) | SD | Latency (ms) | SD | Latency (ms) | SD | Latency (ms) | SD | |
| 35 | 1.60 | 0.23 | 4.37 | 0.27 | 6.75 | 0.44 | 2.77 | 0.26 | 5.15 | 0.43 |
| 40 | 1.60 | 0.23 | 4.30 | 0.25 | 6.63 | 0.39 | 2.70 | 0.24 | 5.02 | 0.39 |
| 45 | 1.60 | 0.23 | 4.24 | 0.23 | 6.51 | 0.36 | 2.64 | 0.22 | 4.91 | 0.35 |
| 50 | 1.60 | 0.23 | 4.19 | 0.22 | 6.41 | 0.33 | 2.58 | 0.21 | 4.81 | 0.32 |
| 55 | 1.60 | 0.23 | 4.14 | 0.21 | 6.32 | 0.31 | 2.54 | 0.20 | 4.72 | 0.30 |
| 60 | 1.60 | 0.23 | 4.10 | 0.20 | 6.24 | 0.29 | 2.49 | 0.19 | 4.64 | 0.28 |
| 65 | 1.60 | 0.23 | 4.06 | 0.19 | 6.17 | 0.27 | 2.45 | 0.18 | 4.57 | 0.26 |
| 70 | 1.60 | 0.23 | 4.02 | 0.19 | 6.11 | 0.25 | 2.42 | 0.18 | 4.50 | 0.25 |
| 75 | 1.60 | 0.23 | 3.99 | 0.18 | 6.05 | 0.24 | 2.39 | 0.17 | 4.45 | 0.23 |
| 80 | 1.60 | 0.23 | 3.97 | 0.18 | 6.00 | 0.23 | 2.36 | 0.17 | 4.40 | 0.22 |
| 85 | 1.60 | 0.23 | 3.94 | 0.18 | 5.96 | 0.23 | 2.34 | 0.16 | 4.36 | 0.21 |
| 90 | 1.60 | 0.23 | 3.92 | 0.18 | 5.92 | 0.22 | 2.32 | 0.16 | 4.32 | 0.20 |
| 95 | 1.60 | 0.23 | 3.91 | 0.17 | 5.89 | 0.21 | 2.30 | 0.16 | 4.28 | 0.20 |
| 100 | 1.60 | 0.23 | 3.89 | 0.17 | 5.86 | 0.21 | 2.29 | 0.15 | 4.25 | 0.20 |
| 105 | 1.60 | 0.23 | 3.88 | 0.17 | 5.83 | 0.20 | 2.27 | 0.15 | 4.23 | 0.19 |
| 110 | 1.60 | 0.23 | 3.86 | 0.17 | 5.81 | 0.20 | 2.26 | 0.15 | 4.20 | 0.19 |
| 115 | 1.60 | 0.23 | 3.85 | 0.17 | 5.79 | 0.20 | 2.25 | 0.15 | 4.18 | 0.19 |
| 120 | 1.60 | 0.23 | 3.84 | 0.17 | 5.77 | 0.20 | 2.24 | 0.15 | 4.17 | 0.18 |
| 125 | 1.60 | 0.23 | 3.83 | 0.17 | 5.76 | 0.19 | 2.23 | 0.15 | 4.15 | 0.18 |
| 130 | 1.60 | 0.23 | 3.83 | 0.16 | 5.74 | 0.19 | 2.22 | 0.15 | 4.14 | 0.18 |
| 135 | 1.60 | 0.23 | 3.82 | 0.16 | 5.73 | 0.19 | 2.22 | 0.15 | 4.13 | 0.18 |
| 140 | 1.60 | 0.23 | 3.82 | 0.16 | 5.72 | 0.19 | 2.21 | 0.15 | 4.11 | 0.18 |
| 145 | 1.60 | 0.23 | 3.81 | 0.16 | 5.71 | 0.19 | 2.21 | 0.15 | 4.11 | 0.18 |
| 150 | 1.60 | 0.23 | 3.81 | 0.16 | 5.70 | 0.19 | 2.20 | 0.15 | 4.10 | 0.18 |
| 155 | 1.60 | 0.23 | 3.80 | 0.16 | 5.69 | 0.19 | 2.20 | 0.15 | 4.09 | 0.18 |
| 160 | 1.60 | 0.23 | 3.80 | 0.16 | 5.69 | 0.19 | 2.19 | 0.15 | 4.08 | 0.18 |
| 165 | 1.60 | 0.23 | 3.80 | 0.16 | 5.68 | 0.19 | 2.19 | 0.15 | 4.08 | 0.18 |
| 170 | 1.60 | 0.23 | 3.79 | 0.16 | 5.68 | 0.19 | 2.19 | 0.15 | 4.07 | 0.18 |
| 175 | 1.60 | 0.23 | 3.79 | 0.16 | 5.67 | 0.19 | 2.19 | 0.15 | 4.07 | 0.18 |
| 180 | 1.60 | 0.23 | 3.79 | 0.16 | 5.67 | 0.19 | 2.19 | 0.15 | 4.07 | 0.18 |
| 185 | 1.60 | 0.23 | 3.79 | 0.16 | 5.67 | 0.19 | 2.18 | 0.15 | 4.06 | 0.18 |
| 190 | 1.60 | 0.23 | 3.79 | 0.16 | 5.66 | 0.19 | 2.18 | 0.15 | 4.06 | 0.18 |
| 195 | 1.60 | 0.23 | 3.78 | 0.16 | 5.66 | 0.19 | 2.18 | 0.15 | 4.06 | 0.18 |
| 200 | 1.60 | 0.23 | 3.78 | 0.16 | 5.66 | 0.19 | 2.18 | 0.15 | 4.06 | 0.18 |
Table 2 shows the derivative values of peaks I, III and V and the average derivative values of the fitting of the I–III and I–V intervals at 90 dB nHL for different postconceptional ages. The standard deviations of the I–III and I–V fittings were also fitted