Table 1.

Mean SAS area (nm2 ± SEM), number of synaptic SAS analyzed (n), and the location (µ), and scale (σ) of the best-fit log-normal distributions in the six cortical layers

ASSS
Mean SAS area ± SEM (nm2)nμσMean SAS area ± SEM (nm2)nμσ
Layer I70,834.87 ± 2649.4159410.810.88104,309.94 ± 8741.687711.290.78
Layer II58,987.37 ± 1788.3699210.720.8387,757.53 ± 8875.476411.140.72
Layer III72,729.58 ± 1209.78221210.930.74116,703.42 ± 6735.4318511.420.72
Layer IV54,770.81 ± 1245.29120010.650.7368,355.35 ± 3896.9517210.880.73
Layer V69,682.16 ± 2210.4168410.850.81113,353.40 ± 10086.086211.410.69
Layer VI58,668.28 ± 2050.8257710.730.7069,382.12 ± 5695.647210.900.76
Layers I–VI65,299.31 ± 697.16625910.840.7993,384.53 ± 3001.2363211.170.78
  • Unweighted means for Layers I–VI are also given.