Exam #2 Chapter 3: Sensation and Perception

Question 1

Dissociate between the “where” and “what” visual pathways.

Answer 1

a. Parallel Processing
b. Ventral Stream: contains a flow of visual information about “what” where looking at in our visual field
c. Dorsal Stream: contains a flow of visual information about “where” it is located

Question 2

What is subtractive coloring?

Answer 2

Subtractive Coloring: removing wavelengths of light being reflected, such as when you mix colored paints

Question 3

What is additive coloring?

Answer 3

Additive Coloring: increasing wavelengths of light being reflected from the surface with mixing colored lights

Question 4

Compare and contrast the trichromatic and opponent-processing theories of color vision.

Answer 4

a. Young and Helmholtz Trichromatic Theory
i. Color vision is based on three photopigments: red, green and blue
ii. Describes processing at the retinal level, but not cortical
b. Karl Hering’s Opponent Processing Theory
i. Colors are arranged in specific antagonistic pairings
ii. This best describes central processing

Question 5

Visual information Processing

Answer 5

Visual Information Processing