Table 3. Dendritic length by layer.

Mean values are in bold and indicate either the length of dendrites found in a layer (μm) or the proportion of total dendritic length found in a layer (prop). Values in parentheses below the means indicate the standard errors. Values in parentheses to the right of the cell type names indicate the numbers of cells reconstructed.

		Average Dendritic Lenth
Injection Target	Cell Type	Layer 2/3		Layer 4A		Layer 4B		Layer 4C α		Layer 4C β–6		Total
		μm	prop	μm	prop	μm	prop	μm	prop	μm	prop	μm
MT	Stellate (5)	0 (0)	0 (0)	51.8 (17.8)	0.01 (0)	5,373.6 (677.7)	0.79 (0.05)	1,414.1 (173.8)	0.21 (0.05)	0 (0)	0 (0)	6,839.5 (530.7)
	Pyramidal (5)	564.5 (95.2)	0.08 (0.02)	160.5 (43.5)	0.02 (0.01)	5,081.3 (265.1)	0.73 (0.01)	1,169.6 (286.3)	0.17 (0.03)	0 (0)	0 (0)	6,975.8 (430.2)
	Combined (10)	282.2 (104.2)	0.04 (0.02)	106.2 (28.6)	0.02 (0)	5,227.5 (346.5)	0.75 (0.03)	1,291.8 (163.1)	0.19 (0.03)	0 (0)	0 (0)	6,907.7 (322.9)
V2	Stellate (3)	0 (0)	0 (0)	4.1 (4.1)	0.01 (0)	1,997.7 (194.7)	0.68 (0.01)	867.6 (382.2)	0.29 (0.02)	0 (0)	0 (0)	2,869.3 (191.7)
	Pyramidal (5)	384.6 (57.0)	0.08 (0.01)	182.7 (91.3)	0.04 (0.01)	3,248.9 (439.6)	0.66 (0.05)	1,122.5 (274.9)	0.23 (0.07)	0 (0)	0 (0)	4,938.7 (474.2)
	Combined (8)	240.4 (78.2)	0.05 (0.01)	115.7 (63.6)	0.02 (0.01)	2,779.7 (354.2)	0.66 (0.03)	1,026.9 (211.7)	0.26 (0.04)	0 (0)	0 (0)	4,162.7 (477.1)