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2. SOME BASIC PROPERTIES OF THE HUMAN VISUAL SYSTEM
In order that the reader may more readily understand the implications of the
following chapters, this chapter is devoted to a discussion of the known physical
and physiological properties of the visual system which may contribute to the
human visual capabilities. Such factors include the actual form of the eye, the
basic components of the neural networks coupling the eye to the brain, the
quality of the refraction optics of the eye, the structure and spectral response of
the retina upon which the final optical image is formed, the relationship
between the diameter of the eye pupil and the prevailing light level, the effects
of sudden changes of scene luminance, the form and extent of involuntary eye
movements which are always present, interactions between the two eyes in
binocular vision and the phenomenon of after-images.
2.1 The basic structure of the visual system
2.2 Variations of pupil diameter
2.3 The optical quality of the eye
2.4 The retina and the neural networks
2.5 Adaptation
2.6 Eye movements
2.1 Accommodation
2.8 Overall quality of the visual system
2.9 Border enhancement - The Mach effect
2.10 Binocular/monocular effects
2.11 Neural signals and basic rhythms
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