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Article: Local connections of excitatory neurons to corticothalamic neurons in the rat barrel cortex.

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Tanaka YR; Tanaka YH; Konno M; Fujiyama F; Sonomura T; Okamoto-Furuta K; Kameda H; Hioki H; Furuta T; Nakamura KC; Kaneko T
J. Neurosci., 2011


Table 2.

Morphological properties of sampled cortical pyramidal neurons

Pyramidal neuron group
L2/3 (n = 5) L4 (n = 5) L5a (n = 3) L5b (n = 5) L6 + (n = 5) L6− (n = 5)
Soma area (μm2) 98.7 ± 8.0 84.0 ± 9.6 190.0 ± 84.1*,†† 243.8 ± 70.8**,††† 95.5 ± 23.4‡‡,§§§ 100.5 ± 7.7,§§§
Horizontal span of apical dendrite (μm)a 416.6 ± 64.2 138.5 ± 49.1*** 111.4 ± 30.0*** 432.4 ± 98.5†††,‡‡‡ 172.8 ± 37.2***,§§§ 206.2 ± 83.7***,§§§
Height of apical shaft (μm)a 305.0 ± 70.8 362.1 ± 121.3 748.0 ± 74.4***,††† 944.8 ± 91.4***,†††, 708.8 ± 81.9***,†††,§§§ 408.7 ± 84.8‡‡‡,§§§,¶¶¶
Horizontal span of basal dendrite (μm)a 274.8 ± 42.6 227.7 ± 19.7 361.2 ± 27.7†† 420.6 ± 85.0***,††† 214.0 ± 34.5‡‡‡,§§§ 314.7 ± 44.8,§§,¶¶
Total length of axon collaterals (mm)b 26.92 ± 7.39 25.07 ± 11.45 29.5 ± 6.3 12.5 ± 2.92*, 9.19 ± 3.38**,,‡‡ 26.11 ± 11.24§,¶¶
Total number of boutons (A)c 5918 ± 2282 5993 ± 3243 5408 ± 1636 1695 ± 503**,††, 1872 ± 1012**,††, 4675 ± 2704§
Bouton density (/mm) 215.5 ± 34.5 231.3 ± 35.9 181.9 ± 36.8 135.0 ± 22.5**,††† 195.4 ± 36.0§ 168.7 ± 37.6
Number of boutons apposed to CTN dendrites(B) 167 ± 115 327 ± 164 529 ± 148 374 ± 142 612 ± 223* 953 ± 500***,††,§§
B/A (%) 2.97 ± 1.88 5.89 ± 2.50 10.17 ± 2.74 21.54 ± 2.59***,†† 35.41 ± 11.76***,†††,‡‡‡,§ 24.75 ± 11.22***,†††,,
  • *,†,‡,§,¶Significant differences (*,†,‡,§,¶p < 0.05; **,††,‡‡,§§,¶¶p < 0.01; ***,†††,‡‡‡,§§§,¶¶¶p < 0.001 by Peritz's F test) from the value of L2/3, L4, L5a, L5b, or L6+ neurons, respectively.

  • a The horizontal span and height of dendrites were measured in the frontal plane to which all the dendrites were projected.

  • bTotal length of axon collaterals was estimated by multiplying the total length of axon collaterals projected onto the frontal plane by π/2.

  • cTotal number of boutons in L4–6 were counted and those in L1–3 were estimated from length of axon collaterals and bouton density in L1–3 (L2/3 neurons, 224.2 ± 39.0 /mm; L4 neurons, 269.6 ± 38.3 /mm; L5a neurons, 229.8 ± 52.7 /mm; L5b neurons, 200.5 ± 37.6 /mm).


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Inferred neuron-electrophysiology data values

Neuron Type Neuron Description Ephys Prop Extracted Value Standardized Value Content Source