Figure 19

Geometry of connection between two neurons. α (β) is the angle of the neuron A’s branch with length \(L_{A}\) (neuron B’s branch with length \(L_{B}\)) with respect to the horizontal axis. θ is the angle between the segment connecting AB and the branch A. C represents the virtual point that lies at the intersection of the branches of length \(L_{A}\) and \(L_{B}\). \(d_{AB}\) (resp. \(d_{AC}\), \(d_{BC}\)) denotes the distance between A and B (resp. A, C and B, C). Note that \(d_{AC} \leq L_{A}\), \(d_{BC} \leq L_{B}\)