The dissection has been continued posteriorly to the occipital pole by the removal of cortex and association bundles including the posterior part of the superior longitudinal fasciculus. This exposes a massive system of fibers (the external sagittal stratum) running toward the occipital pole in the depths of the hemisphere. Many of these fibers interconnect thalamic and cortical centers and course in the retrolenticular and sublenticular parts of the internal capsule (e.g., posterior stalk of the thalamus, geniculocalcarine tract). Fibers of the visual radiation (geniculocalcarine tract) at first pass outward from the lateral geniculate body, in the sublenticular part of the internal capsule (14), then turn posteriorly. They apparently do not form any exaggerated forward loops as is sometimes depicted.