AP PSYCHOLOGY

Detailed explanation-1: -Stimulants are drugs that tend to increase overall levels of neural activity. Many of these drugs act as agonists of the dopamine neurotransmitter system. Dopamine activity is often associated with reward and craving; therefore, drugs that affect dopamine neurotransmission often have abuse liability.

Detailed explanation-2: -Stimulants. Stimulants are drugs that tend to increase overall levels of neural activity.

Detailed explanation-3: -Ethanol, which we commonly refer to as alcohol, is in a class of psychoactive drugs known as depressants (Figure 1). A depressant is a drug that tends to suppress central nervous system activity.

Detailed explanation-4: -For example, cocaine acts by binding to the dopamine transporter, blocking the removal of dopamine from the synapse.

Detailed explanation-5: -Cocaine prevents dopamine from recycling, causing excessive amounts to build up between nerve cells. This flood of dopamine ultimately disrupts normal brain communication and causes cocaine’s high.