Are Visual Peripheries Forever Young?

Figure 4

The main projection pathways of the carnivore shown as a compilation of developmental data. Parts of the scheme that are marked in pink develop earlier than those marked in orange. First visually evoked responses derive from central visual field (cats: [57]; humans: [58]); peripheral locations within nasal visual hemifield evoke responses later (humans: [57]; cats: [96]). Central-to-peripheral developmental gradient is shown in the retina (multispecies review [49]) and at the cortical level (marmosets: [54]; cats: [55]). X-type cells develop earlier than Y-type in the retina [123] and at the dorsal lateral geniculate nucleus (dLGN) level (humans: [124]; cats: rev. [125]). W-type cells develop earlier than Y-type at the superior colliculi (SC) level [126]. Superior colliculus develops earlier than dorsal lateral geniculate [127, 128]. Ipsilateral projections from peripheral retina develop later (cats: [67]).