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. Author manuscript; available in PMC: 2021 Oct 15.
Published in final edited form as: Cell. 2020 Oct 15;183(2):537–548.e12. doi: 10.1016/j.cell.2020.09.019

Figure 7. Conduction delays of neocortical axonal arbors.

Figure 7.

(A) Axonal conduction velocity measurements from the peripheral to the central nervous system. Peripheral nerves: (Hursh, 1939); squid giant axon: (Hodgkin and Huxley, 1952); nucleus magnocellularis axons: (Carr and Konishi, 1990); intracortical axons: (Hirsch and Gilbert, 1991; Shu et al., 2007). (B) Example reconstructions of an HVC premotor neuron axon and a L4 spiny neuron axon from rat somatosensory cortex. A/P: anterior/posterior; D/V: dorsal/ventral. (C, D) Distributions of axonal pathlengths (C) and resulting conduction delays (D) for 22 HVC premotor neuron axons and 14 L4 spiny neuron axons (Narayanan et al., 2015).