Table 3.
Morphology of CD units
| Property | C Units | D Units |
|---|---|---|
| Axon diameter, μm | 2.6 | 2.5 |
| 2.39–2.77 | 2.17–2.66 | |
| 1.76–3.46 | 1.66–3.48 | |
| Nodes | 1 | 3 |
| 1–1 | 2–4 | |
| 0–3 | 1–14 | |
| Ends | na | 4 |
| 3–5 | ||
| 2–15 | ||
| Boutons | na | 4 |
| 2–5 | ||
| 1–23 | ||
| Bouton diameter, μm | na | 1.57 |
| 1.45–1.75 | ||
| 1.04–2.44 | ||
| Calyces | 3 | 1 |
| 2–3 | 1–2 | |
| 1–5 | 1–4 | |
| Collecting area, μm2 | 89.1 | 217.0 |
| 72.54–116.07 | 187.22–299.66 | |
| 15.4–367.4 | 73.8–1,996.5 | |
| Total process length, μm | 47.8 | 77.0 |
| 41.52–58.7 | 62.75–89.92 | |
| 20.9–95.6 | 40.3–306.7 | |
| Distance between boutons, μm | na | 11.2 |
| 5.54–18.45 | ||
| 0–33.3 | ||
| Distance between calyces, μm | 8.8 | 0 |
| 8.15–10.08 | 0–7.89 | |
| 0–15.6 | 0–12.1 | |
| Calyces + boutons | na | 6 |
| 4–6 | ||
| 2–25 | ||
| Calyces + boutons/collecting area | 0.03 | 0.02 |
| 0.025–0.034 | 0.018–0.027 | |
| 0.01–0.07 | 0.01–0.06 |
Values are medians, 95% confidence intervals of median (Zar 1999), and range for morphological properties of C and D units. All measures of size are normalized. For C and D units, n = 43 and n = 25, respectively. na, Not applicable.