Penny consumes a recreational drug.She finds that she is almost too sensitive to what is going on,too vigilant-almost paranoid,in fact.The drug Penny consumed seems to enhance the activity of the neurotransmitter:

Question

Quizplus · Accepted Answer

The symptoms mentioned, such as increased vigilance and paranoia, suggest that the drug is enhancing the activity of norepinephrine, which is associated with the "fight or flight" response and increased arousal. Serotonin is associated with mood regulation and is not likely to produce these specific effects. GABA is an inhibitory neurotransmitter and increasing its activity would likely have a calming effect, which is not consistent with Penny's symptoms. Endorphins are involved in pain relief and pleasure sensations and would not be expected to cause increased vigilance or paranoia.

Penny Consumes a Recreational Drug