In Animal Studies,what Happens When Researchers Inject Drugs That Prevent

question 19

Multiple Choice

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.

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Definitions:

Stimulants

A class of drugs that have a stimulating or arousing effect on the central nervous system, and create their effects by influencing the rate of uptake of the neurotransmitters dopamine, norepinephrine, and serotonin at receptor sites in the brain.

Treat

To manage or address a problem or disease through interventions such as medication, therapy, or lifestyle changes.

Meta-Analytic Study

A research method that combines the results of several studies to draw conclusions about trends or effects across them.

Effect Size

A common metric used to summarize the meaning of diverse studies in a meta-analysis. It is calculated as the difference between the means of the experimental (that is, the treatment) group and the control group, divided by the standard deviation of either the control group or the pooled sample of both groups.