Fig. 5.

Schematic representation of diameters and estimated conduction delays for connections traced in Tomasi et al. (2012) and Innocenti et al. (2014). Thickness of arrow segments is proportional to median diameter; their length is proportional to pathway length; and projections from area 4 are the means of two animals. Delays are calculated on conduction velocities and pathway lengths. Red arrows emphasize the faster conduction of pathways originating in somatosensory and motor areas. Reproduced from Innocenti et al. (2016a). Main acronyms (Paxinos et al. 2000): ST3 superior temporal area 3, TPt temporoparietal area, PEc parietal area caudal, MT middle temporal area (visual area5), Caud N caudatus; Th thalamus, ic internal capsule, CC corpus callosum. Numbers correspond to Brodman areas