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Table 1 Probabilities of synaptic connections found by paired recording and data from other tests to show presence/absence of connections

From: Axon and dendrite geography predict the specificity of synaptic connections in a functioning spinal cord network

  Post neuron
Pre neuron RB dlc dla aIN cIN dIN mn
RB ipsi 0 (0/2) 0.63 (34/54) 0.35 (6/17) 0.13 (2/15) 0.09 (4/44) + +
dlc contra - 0 + (0/1) - 0.33 (2/6) 0.43 (18/42) 0.33 (1/3) 0.46 (6/13)
dla ipsi 0 (0/17) 0.18 (2/11) - 0.25 (2/8) 0.08 (1/12) 0 (0/2) -
aIN ipsi 0.07 (1/15) [0.81] (17/21) 0.38 (3/8) 0.25 (4/16) 0.15 (6/39) 0.2 (2/10) 0.33 (1/3)
cIN contra - 0 + (0/42) 0 + 0 ++ (0/13) 0.26 (9/35) 1 ++ (1/1) 0 ++ (0/3)
dIN ipsi - + 0 + (0/2) ++ (6/7)* ++ (6/7)* ++ (45/62)* ++ (27/32)*
  1. Figures in parentheses give synapses found over number of pairs tested. For each neuron type, ipsi refers to synapses made on the same side and contra refers to synapses made on the opposite side. +, rare connections inferred from other experiments; ++, common connections but no quantitative data; *, connections frequent but preliminary recordings were used to select pairs of neurons that were connected, so connection probabilities are not meaningful. Square brackets indicate an artificially high value for aIN contacts.