Visual System Worksheet

Matching

1.  _____ Bill
perceived the cover of his book was red even though the light changed in the
various rooms in which he read the book.

1. _____ Mary damaged her cerebral cortex and now perceives the world
   in black, white, and grey.
2. _____ Phyllis wears only various shades of purple. Her clothes are
   many different types of purple, but she only wears ___________ of purple.
3. _____ The shade of achromatic color stays the same regardless of
   how much sunlight is reflected.
4. _____ You go to a lecture and the topic seems to focus on
   blue-yellow and red-green perception of color. The lecture is likely
   discussing ______________.
5. _____ The afterimage is a red heart. This means the image was
   _____________.
6. _____ Each receptor mechanism is sensitive to different elements
   of the spectrum and suggests we need various wavelengths for normal color
   vision. This is the _____________.
7. _____ Which color deficiency is likely a genetic transmission?
8. _____ Monochromats do not have functioning ___________.
9. _____ Red and blue paints are mixed and the result is purple. This
   shows the ____________.
10. _____

_____

_____ There are basic colors, but the ability to perceive a large
number of colors depends on _____________, _____________, and
_________________.

1. _____ The edge of an illuminated e-reader next to a dark room is
   called __________.

A. Saturation  B. Hues  C. Color Constancy  D. Cones

E. Green  F. Subtractive Color Mixture  G. Opponent Process Theory of
Color Vision

H. Reflectance
Edge  I. Cerebral
Achromatopsia  J.
Wavelength

K. Dichromatism    L.
Lightness Constancy    M. Intensity 

N. Young-Helmoltz
Theory of Color Vision 

Short-Answer

In 200 to 300 words, describe the role of Gestalt principles
in perceptual organization. Explain how these principles help us organize our
world.