Table 3.

Distribution patterns of synapses and autapses on uni- and bidirectionally coupled layer 5 pyramidal neurons

	Synapses		Autapses
	% occurrence of the total	Distance from soma (μm)	% occurrence of the total	Distance from soma (μm)
Basal 1°	2  (n = 2)	44.0  ± 35.2	5  (n = 2)	69.4 ± 45.9
Basal 2°	16  (n = 17)	75.1  ± 35.3	21  (n = 9)	67.6 ± 36.8
Basal 3°	35  (n = 37)	82.8  ± 25.2	31  (n = 13)	71.9 ± 5.4
Basal 4°	10  (n = 11)	98.3  ± 27.3	2  (n = 1)	58.3
Oblique 1°	7  (n = 7)	131.3  ± 87.4	19  (n = 8)	202.6 ± 103.4
Oblique 2°	15  (n = 16)	151.1  ± 48.0	12  (n = 5)	158.6 ± 42.1
Oblique 3°	6  (n = 6)	145.3  ± 45.3	3  (n = 1)	127.3
Main apical	7  (n = 7)	530.8  ± 116.3	7  (n = 3)	490.6 ± 19.8
Terminal tuft	2  (n = 3)	796.9  ± 98.3	–	–

Percentages and distances from the cell body of synaptic (n = 106) and autaptic contacts (n = 42) are given for 13 cell pairs.