Thank you and sorry for late reply.
Yes, that's what it means. The sharp field of view of human vision is only 0.5 to 1 degree wide depending how strictly you define sharpness. This means, in your typical binoculars with 60-degree apparent field of view, only 1/3600 of the visible area is seen sharply at any given time!! The entire field of view is perceived via a series of scans whose exact order we don't remember consciously. The Russian scientist
Alfred Yarbus has made numerous studies of human eye movements when examining a scene.
The "unsharp" part of human's field of view is used for proprioception (figuring out where we are in the world) and detection of movement (both self-movement and movement of other objects).
A most astonishing fact: In humans and other primates, the visual information is branched into 6 parallel pathways after going through the Lateral Geniculate Nucleus (LGN). Four of these pathways carry color information while the other two carry only luminance information.
Perspective,
stereoscopic vision,
form and
movement are processed by the pathway which is not color selective!
One part of the brain works only in black-and-white and creates line-drawings of the visual world. Another part of the brain paints these line drawings
if time permits!
See Margaret Livingstone and David Hubel,
Segregation of Form, Color, Movement, and Depth: Anatomy, Physiology, and Perception, Science, Vol. 240, May 1988 (Dr. Hubel won the Nobel Prize for his work on eye physiology in 1981. He has passed away. His student, Dr. Livingstone, deserve to win one as well.)
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