A peg-like, cytochrome-oxidase-rich column of dual-opponent color cells is called
A) an on-off color peg.
B) a blob.
C) a color field.
D) an aggregate color peg.
E) a dual-opponent peg.
Question 2
The opponent theory appears to provide the best explanation of color coding at the
A) bipolar level.
B) retinal ganglion cell level.
C) cortical level.
D) all of the above
E) receptor level.
