Connectional subdivision of the claustrum: two visuotopic subdivisions in the macaque

Ricardo Gattass, Juliana G M Soares, Robert Desimone, Leslie G Ungerleider. Frontiers in systems neuroscience, May 2014.


The claustrum is a surprisingly large, sheet-like neuronal structure hidden beneath the inner surface of the neocortex. We found that the portions of the claustrum connected with V4 appear to overlap considerably with those portions connected with other cortical visual areas, including V1, V2, MT, MST and FST, TEO and TE. We found extensive reciprocal connections between V4 and the ventral portion of the claustrum (vCl), which extended through at least half of the rostrocaudal extent of the…