Table 2.
Mean values derived from neuron morphology during the three age stages, and mean differences between stages and probabilities (P) of the difference from summer juveniles to winter subadults (s–w) and from winter subadults to spring–summer adults (w–a) as calculated from the posterior distributions
| Summer juvenile | Winter subadult | Spring–summer adult | Difference summer–winter | P(s–w) | Difference winter–adult | P(w–a) | ||||
|---|---|---|---|---|---|---|---|---|---|---|
| Mean ± SD | 95% CrI | Mean ± SD | 95% CrI | Mean ± SD | 95% CrI | |||||
| Somatosensory cortex | ||||||||||
| Dendrite length (µm) | 2148 ± 418 | 1882/2409 | 2155 ± 660 | 1884/2425 | 2199 ± 595 | 1934/2463 | 7 (0.3%) | 0.38 | 44 (2.0%) | 0.46 |
| Dendr. volume (µm3) | 1498 ± 477 | 1214/1782 | 1433 ± 554 | 1145/1732 | 1410 ± 483 | 1127/1700 | − 65 (− 4.3%) | 0.62 | − 23 (− 1.6%) | 0.54 |
| Soma size (µm2) | 155 ± 36 | 137/172 | 127 ± 29 | 109/146 | 136 ± 32 | 119/153 | − 28 (− 17.7%) | 0.99 | 9 (7.0%) | 0.75 |
| Spine number | 2736 ± 1057 | 2332/3134 | 2703 ± 964 | 2283/3132 | 2324 ± 926 | 1918/2727 | − 33 (− 1.2%) | 0.46 | − 379 (− 14.0%) | 0.10 |
| Spine density (n/µm) | 1.2 ± 0.3 | 1.1/1.4 | 1.2 ± 0.3 | 1.1/1.4 | 1.1 ± 0.3 | 0.9/1.2 | < 0.1 (− 0.1%) | 0.51 | − 0.2 (− 15.2%) | 0.97 |
| Cingulate cortex | ||||||||||
| Dendrite length (µm) | 1799 ± 521 | 1568/2035 | 1645 ± 720 | 1415/1874 | 1731 ± 470 | 1498/1959 | − 154 (− 8.6%) | 0.83 | 86 (5.2%) | 0.70 |
| Dendr. volume (µm3) | 1120 ± 456 | 916/1320 | 841 ± 357 | 637/1041 | 965 ± 282 | 756/1174 | − 279 (− 25.0%) | 0.97 | 124 (14.8%) | 0.80 |
| Soma size (µm2) | 171 ± 42 | 151/191 | 153 ± 32 | 133/173 | 137 ± 23 | 116/158 | − 18 (− 10.4%) | 0.89 | − 17 (− 10.9%) | 0.87 |
| Spine number | 1912 ± 689 | 1519/2307 | 1965 ± 1365 | 1562/2366 | 2028 ± 821 | 1623/2435 | 53 (2.8%) | 0.57 | 63 (3.2%) | 0.58 |
| Spine density (n/µm) | 1.1 ± 0.3 | 1.0/1.2 | 1.1 ± 0.4 | 1.0/1.3 | 1.2 ± 0.3 | 1.0/1.3 | < 0.1 (3.6%) | 0.34 | < 0.1 (3.3%) | 0.34 |
| Caudoputamen | ||||||||||
| Dendrite length (µm) | 2324 ± 672 | 2003/2645 | 2013 ± 453 | 1688/2342 | 1817 ± 549 | 1494/2137 | − 311 (− 13.4%) | 0.91 | − 196 (− 9.7%) | 0.80 |
| Dendr. volume (µm3) | 1725 ± 543 | 1472/1978 | 1348 ± 405 | 1093/1604 | 1157 ± 309 | 899/1412 | − 377 (− 21.9%) | 0.98 | − 191 (− 14.2%) | 0.98 |
| Soma size (µm2) | 114 ± 37 | 98/131 | 91 ± 21 | 74/108 | 82 ± 9 | 65/99 | − 23 (− 20.2%) | 0.97 | − 9 (− 10.1%) | 0.78 |
| Spine number | 3243 ± 1105 | 2644/3842 | 2453 ± 930 | 1859/3060 | 2038 ± 503 | 1444/2637 | − 790 (− 24.4%) | 0.97 | − 415 (− 16.9%) | 0.83 |
| Spine density (n/µm) | 1.4 ± 0.3 | 1.2/1.6 | 1.2 ± 0.3 | 1.0/1.4 | 1.2 ± 0.2 | 1.0/1.3 | − 0.2 (− 15.0%) | 0.94 | − 0.05 (− 3.9%) | 0.64 |