Table 2.

Spine, SER, and spine apparatus (SA) dimensions

Age and spine shapePSD area (μm2)Spine volume (μm3)SER or SA volume (μm3)% Spine volumeSpine membrane area (μm2)SER or SA membrane area (μm2)% Spine membrane area
Day 15
T0.050.100.00323.20.980.2223
S0.190.240.00833.51.950.3820
M0.480.430.00932.22.980.6221
Adult
T0.130.060.00142.40.980.1212
M10.250.250.00702.82.480.9036
M20.500.380.01102.93.711.2734
M30.790.640.02203.45.422.1940
M1 neckn/a0.030.00288.6 ± 5.20.560.3461
M2 neckn/a0.010.00087.0 ± 4.70.340.1028
M3 neckn/a0.100.00809.4 ± 3.61.200.6453
  • At each age, the values are arranged down the table in the order of increasing PSD area. Some of these spines are visualized in Figure8, as indicated in its legend.