Visual Field Anisotropy for Perceiving Shape from Shading and Shape from Edges.

Anisotropy in the peripheral visual field based on pupil response to the glare illusion

“…The difference of observers’ perception scale (slightly or significantly) in different visual fields (VFs) associated with the stimulus orientation is termed as VF anisotropy. Multiple studies have demonstrated VF anisotropy in visual perception [ 1 , 2 , 3 , 4 ]. For example, the spatial resolution of attention and spatial frequency sensitivity are known to have an advantage in human vision, attributed to a downward bias in the lower VF (LVF) compared with the upper VF (UVF) [ 5 ].…”