In animal studies, what happens when researchers inject drugs that prevent neurogenesis?
a. The animals become manic.
b. Antidepressants lose their effectiveness.
c. Antidepressants become much more effective.
d. The animals show no observable changes, other than becoming very slow learners.
Question 2
In addition to improving mood, antidepressant medications might also
a. increase neurogenesis in the hippocampus.
b. decrease neurogenesis in the hippocampus.
c. decrease a person's need for sleep.
d. increase the risk of cardiovascular disease.