Table 1.
Summary of various parameters of stereocilia and rootlet lengths in rat cochlea
| St/rt type | Apical (A) | Basal (B) | p (A vs B) | Ratio A/B |
|---|---|---|---|---|
| Tall st | 2.99 ± 0.70 (39) | 1.06 ± 0.09 (28) | >0.001 | 2.82 |
| Tall rt | 1.13 ± 0.20 (32) | 0.96 ± 0.14 (28) | >0.001 | 1.2 |
| Ratio tall st/rt | 2.65 | 1.1 | ||
| Intermediate st | 1.56 ± 0.31 (34) | 0.80 ± 0.08 (29) | >0.001 | 1.95 |
| Intermediate rt | 0.80 ± 0.25 (31) | 0.79 ± 0.12 (31) | 0.41 | 1 |
| Ratio intermediate st/rt | 1.95 | 1 | ||
| Short st | 0.97 ± 0.17 (23) | 0.52 ± 0.05 (35) | >0.001 | 1.87 |
| Short rt | 0.57 ± 0.2 (22) | 0.48 ± 0.09 (26) | 0.047 | 1.2 |
| Ratio short st/rt | 1.7 | 1.1 |
The means ± SDs of the height of stereocilia (st) and length of rootlet (rt) are shown for apical and basal locations for each stereociliary row in all OHCs analyzed in the present study. (Values in parentheses indicate the total number of stereocilia measured in each category using all three measurement techniques described in Materials and Methods.) Column p indicates the probability of a significant difference between apical and basal (A vs B) data determined using a one-tailed t test. The ratio of apical to basal values is also given, in the column labeled Ratio (A/B). The ratio of stereocilia to relevant rootlet length (st/rt) is given in the row beneath each set of length/height data.