Use the Following to Answer Questions

Multiple Choice

Use the following to answer questions:
Various experiments have shown that in addition to the horizontal layered organization of the cortex, there are also vertical organizations, as described by investigators using various experimental techniques. For each type of organization listed, select the most appropriate alternative from the list below.
-columns ___

A) color perception in V1
B) whisker (vibrissa) perception
C) ocular dominance
D) visual perception in V2