It could be either, depending on what the speaker wants to say. For example, we can say, "Because of our dog's alertness to strange noises, we always feel safe in our house." Or we could say, "The...
Dopamine is directly affected by most stimulants. Yes. In the short term, stimulants can produce increased wakefulness, and decreased appetite. become more talkative, energetic. However: There is a...