TABLE 1.
Cochlear neuronal cell counts for each segment versus age
| Age (years) | n | Mean age (years) | Seg I (mean ± SD) | Seg II lower (mean ± SD) | Seg II upper (mean ± SD) | Seg III (mean ± SD) | Seg IV (mean ± SD) | Total (mean ± SD) |
|---|---|---|---|---|---|---|---|---|
| 0–10 | 12 | 3 | 4,479 ± 1002 | 6,226 ± 503 | 6,620 ± 667 | 7,946 ± 908 | 8,408 ± 1,301 | 33,679 ± 3,439 |
| 11–20 | 10 | 14 | 4,442 ± 924 | 6,016 ± 615 | 5,316 ± 930 | 6,944 ± 1,102 | 7,401 ± 1,257 | 30,128 ± 3,734 |
| 21–30 | 10 | 25 | 4,154 ± 926 | 5,646 ± 914 | 5,585 ± 1,118 | 7,391 ± 1,247 | 7,281 ± 1,199 | 30,273 ± 3,879 |
| 31–40 | 10 | 35 | 3,693 ± 425 | 5,269 ± 761 | 5,451 ± 902 | 6,929 ± 883 | 7,478 ± 492 | 28,820 ± 2,782 |
| 41–50 | 10 | 47 | 3,237 ± 1,053 | 4,835 ± 910 | 5,125 ± 802 | 6,611 ± 757 | 7,085 ± 888 | 26,922 ± 3,018 |
| 51–60 | 10 | 56 | 3,537 ± 817 | 4,951 ± 812 | 5,050 ± 723 | 6,096 ± 862 | 6,172 ± 1,097 | 25,787 ± 3,848 |
| 61–70 | 10 | 64 | 3,279 ±1,020 | 5,102 ± 614 | 4,892 ± 632 | 6,653 ± 738 | 7,116 ± 730 | 27,042 ± 2,674 |
| 71–80 | 10 | 76 | 3,714 ± 974 | 5,220 ± 1,170 | 4,963 ± 864 | 6,215 ± 1,281 | 6,088 ± 1,400 | 26,200 ± 4,491 |
| 81–90 | 10 | 85 | 2,686 ± 803 | 4,278 ± 898 | 4,363 ± 702 | 5,458 ± 927 | 5,810 ± 943 | 22,946 ± 3,402 |
| 91–100 | 8 | 92 | 2,726 ± 752 | 3,828 ± 472 | 4,501 ± 761 | 5,587 ± 1037 | 5,802 ± 1,349 | 22,444 ± 3,343 |