Table 2.
Measures of pyramidal neuron morphological complexity and position (depth from pial surface) in somatosensory (area 3b), primary motor (area 4), prestriate visual (area 18), and prefrontal (area 10) cortex (mean ± SD)
| Morphological measure | Area 3b | Area 4 | Area 18 | Area 10 |
| Newborns and infants (n = 4) | ||||
| Cell soma area (μm2) | 185 ± 88 | 176 ± 45 | 152 ± 68 | 189 ± 46 |
| Cell soma depth (μm) | 1,314 ± 733 | 1,040 ± 548 | 1,062 ± 468 | 1,151 ± 603 |
| TDL (μm) | 879 ± 361 | 866 ± 376 | 805 ± 516 | 655 ± 293 |
| MSL (μm) | 47 ± 15 | 38 ± 12 | 37 ± 12 | 30 ± 8 |
| DSC (μm) | 20 ± 8 | 22 ± 8 | 21 ± 7 | 22 ± 8 |
| DSN (μm) | 179 ± 105 | 139 ± 91 | 138 ± 132 | 84 ± 68 |
| DSD (μm) | 0.20 ± 0.07 | 0.15 ± 0.05 | 0.16 ± 0.07 | 0.12 ± 0.06 |
| Adults (n = 7) | ||||
| Cell soma area (μm2) | 183 ± 88 | 185 ± 62 | 167 ± 75 | 190 ± 63 |
| Cell soma depth (μm) | 796 ± 209 | 707 ± 247 | 692 ± 241 | 733 ± 224 |
| TDL (μm) | 894 ± 429 | 966 ± 377 | 851 ± 406 | 1,329 ± 705 |
| MSL (μm) | 27 ± 8 | 47 ± 11 | 40 ± 11 | 49 ± 16 |
| DSC (μm) | 21 ± 8 | 21 ± 6 | 21 ± 7 | 27 ± 10 |
| DSN (μm) | 148 ± 78 | 166 ± 101 | 169 ± 84 | 401 ± 203 |
| DSD (μm) | 0.16 ± 0.04 | 0.17 ± 0.07 | 0.19 ± 0.04 | 0.33 ± 0.22 |
TDL, total dendritic length; MSL, mean segment length; DSC, dendritic segment count; DSN, dendritic spine number; DSD, dendritic spine density.