V1 is primary visual cortex, and nearly all of the efferents of the LGn are directed to V1. Functionally, V1 in each hemisphere contains a single orderly (topographic) representation of the opposite/contralateral visual field. V1 is identical to Brodmann’s area 17 as he (and you) easily recognized it in both cell and fibers stains and even in unstained brain sections by the stria of Gennari (see below) which is visible throughout V1/17 and ends precisely at the border of V1/17. V1 is also often called “striate cortex”, again because of the stria of Gennari. V1 is principally located on the depths of the calcarine sulcus and ends at the lips of the upper and lower bank, barely extending into the adjacent cuneus and lingual gyri, V1 also extends out of the poster end of the calcarine onto the pole of the occipital lobe.
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