Geometric parameters of different spine morphologies
| Parameter . | Filopodiaa . | Thinb . | Mushroomc . |
|---|---|---|---|
| Total length (L; µm) | 2–20 | 0.98 ± 0.42 | 1.5 ± 0.25 |
| Length of neck (l; µm) | 0.51 ± 0.34 | 0.43 ± 0.21 | |
| Neck diameter (2r; µm) | < 0.3 | 0.1 ± 0.03 | 0.2 ± 0.07 |
| Total volume (µm3) | 0.04 ± 0.02 | 0.29 ± 0.13 | |
| Volume of head (V; µm3) | 0.03 ± 0.015d | 0.27 ± 0.13 | |
| Total surface area (µm2) | 0.59 ± 0.29 | 2.7 ± 0.93 | |
| Surface area of PSD (µm2) | 0.05 ± 0.02 | 0.3 ± 0.1 |
| Parameter . | Filopodiaa . | Thinb . | Mushroomc . |
|---|---|---|---|
| Total length (L; µm) | 2–20 | 0.98 ± 0.42 | 1.5 ± 0.25 |
| Length of neck (l; µm) | 0.51 ± 0.34 | 0.43 ± 0.21 | |
| Neck diameter (2r; µm) | < 0.3 | 0.1 ± 0.03 | 0.2 ± 0.07 |
| Total volume (µm3) | 0.04 ± 0.02 | 0.29 ± 0.13 | |
| Volume of head (V; µm3) | 0.03 ± 0.015d | 0.27 ± 0.13 | |
| Total surface area (µm2) | 0.59 ± 0.29 | 2.7 ± 0.93 | |
| Surface area of PSD (µm2) | 0.05 ± 0.02 | 0.3 ± 0.1 |
Table modified from Alimohamadi et al. (2021).
Yuste and Bonhoeffer (2004); Kanjhan et al. (2016).
Harris et al. (1992); Rodriguez et al. (2008); Spacek and Harris (1997).
Harris et al. (1992); Spacek and Harris (1997).
Value from Harris et al. (1992) was 0.03 ± 0.15, but we assume there was a typo in the original text because the spine volume should not be negative.