1. In order to maximize visual acuity at night, you should
A. look directly at the object you wish to see
B. turn your head at a slight angle to the object
C. close one eye
D. blink your eyes several times to hasten dark adaptation
2. The pathway that researchers believe mediates the perception of pain originates in
A. the septal nucleus
B. the periacqueductal gray
C. the medulla
D. the medial forebrain bundle
3. Sleep-inducing drugs are classified as
A. narcotics
B. sedatives
C. hallucinogens
D. soporifics