Two Distinct Human Medial Temporal Complexes

We had previously discussed that hMT+ should have two distinct regions, one is connected to the central retina, and another is connected to the retinal peripheries; and both of these distinct regions generate different perceived speed. Namely, in the central region, the stimulus appears to move much slower, see references 1 & 2; in the peripheral region however, it appears to move faster and even with reversed direction, see reference 4. This article, however, provides evidence that repeated symmetric patterns are perceived to move much slower than repeated asymmetric patterns (RAP); additionally, asymmetric but not symmetric patterns tends to generate illusory motion reversals. Evidences which conclude that symmetric, but not asymmetric patterns are preferred to be processed by the central retina; an additional characteristic that adds further distinction between the central and the peripheral hMT+ regions.