Pamela watches her cat Mr. Big swat his paw at the wall and calls out, Crazy Big, what are you swatting at; nothing is there. How would you explain the fact that Mr. Big can see something that Pamela cannot?
a. Cats see low-frequency, low contrast objects better than humans.
b. Cats see low-frequency, high contrast objects better than humans.
c. Cats see high-frequency, low contrast objects better than humans.
d. Cats see high-frequency, high contrast objects better than humans.
Question 2
In terms of object recognition, the simplest patterns of lines are gratings, which can vary in two dimensions: ____.
a. frequency and depth
b. frequency and contrast
c. hue and depth
d. hue and contrast