Computed SGN spike conduction times with additional delay Δt per 1 µm soma diameter increase.

d1 and d2 represent peripheral and central axon diameters; nmsoma denotes the number of surrounding single membrane layers in the soma region including the pre- and postsomatic segments. t1, t2, t3 and t4 denote postsynaptic delay, spike conduction time in the peripheral axon, presomatic delay and spike conduction time in the central axon, respectively. t_total  = t1+t2+t3+t4, Δt|dsoma+1 µm denotes the enlargement step of the presomatic delay when dsoma is 1 µm increased.