1. According to one theory of color vision, colors are signaled in pairs by neurons that fire faster to one color and slower to another color. This theory is known as the
A. opponent process theory
B. trichromatic theory
C. signal-detection theory
D. feature-detection theory
2. Among the following, which drug tends to produce tolerance most SLOWLY?
A. narcotics
B. stimulants
C. sedatives
D. alcohol
3. The sensory receptors for smell are referred to as
A. smell buds
B. gustatory bulbs
C. olfactory cilia
D. psiatic receptors