Neocortical Axon Arbors Trade-off Material and Conduction Delay Conservation
Figure 6
Wire length economy and path length economy uncorrelated with either arbor length or bouton number.
(A) Wire length economy (ε) versus total axon arbor length (LAXON) (linear regression shown as solid grey line; slope = −0.000272 mm−1, intercept = 0.82, r2 = 0.0096), (B) Wire length economy (ε) versus total boutons per arbor (slope = −1.08e−5 mm−1, intercept = 0.85, r2 = 0.1648), (C) Path length economy (γ) versus total axon arbor length (LAXON) (slope = 0.0008 mm−1, intercept = 0.63, r2 = 0.0574), and (D) Path length economy (γ) versus total boutons per arbor (slope = 2.16e−6 mm−1, intercept = 0.66, r2 = 0.0046) (n = 19). The lack of correlation implies they are scale-invariant economy measures.