Fig. 9.

Contrasting EV and VP projections. A: Deposits ~4 mm apart in the ventral posterior ectosylvian gyrus (blue circles) and the ventroposterior area (red circles). B: Discrete EV injections spread <1 mm. C: VP injections in the posterior ectosylvian sulcus were <1 mm wide. D: Area EV projections were segregated topographically from VP input, arising more caudally in the MGB dorsocaudal (DCa) and dorsal superficial (DS) nuclei, with clusters extending past the MGB midpoint. E: VP projections concentrated in the ventral division as a focal dorsoventral strip, which encroached upon the dorsal division (D). F: Clustered input from DS (at 34%) resembled that to areas In, Te, and ED. Further labeling extended from the ventrolateral nucleus into the medial division. G: At the MGB midpoint, ventrolateral nucleus labeling was prominent, with nearby, topographic projections to VP. H–I: The clustered ventrolateral nucleus labeling continued rostrally, with sparse ventral division input to VP. J: Areas EV and VP had different MGB input patterns, with VP receiving strong projections (~60%) from V, and EV dominated by DS, Vl, and DCa projections (~65% combined). Double labeling was sparse (<1%).