Table 2.
Basic properties of bouton clusters in layer 4 and 6 pyramidal cells
| Layer 4 | Layer 6 | Difference | |
|---|---|---|---|
| Cell number | 22 | 22 | |
| Number of total clusters | 130 | 112 | |
| Cluster number/cell | 5.9 ± 3.5 | 5.1 ± 2.4 | |
| Cluster diameter | 442.5 ± 328.2 | 394.2 ± 283.7 | |
| Cluster weight | 0.169 ± 0.199 | 0.196 ± 0.246 | |
| Distance from the soma to the cluster center | 850.0 ± 574.6 | 711.2 ± 439.0 | L4 > L6* |
| 1st rank cluster | |||
| Weight | 0.512 ± 0.195 | 0.629 ± 0.208 | |
| Distance | 316.4 ± 337.3 | 520.9 ± 423.4 | |
| Diameter | 900.8 ± 366.8 | 771.7 ± 226.3 | |
| 2nd rank cluster | |||
| Weight | 0.253 ± 0.085 | 0.191 ± 0.105 | L4 > L6* |
| Distance | 777.9 ± 378.1 | 672.9 ± 319.1 | |
| Diameter | 577.0 ± 203.5 | 491.6 ± 265.8 | |
| Weight 2nd/1st | 0.59 ± 0.30 | 0.38 ± 0.27 | L4 > L6* |
Values represent mean ± SD. Statistical significance was examined by Mann–Whitney U test (* p < 0.05)