PSYCHOLOGY OF EMOTIONS

Detailed explanation-1: -Agonists are drugs that mimic the actions of neurotransmitters, whereas antagonists are drugs that block the actions of neurotransmitters.

Detailed explanation-2: -Drugs that bind to neurotransmitter receptors, mimicking the activity of a neurotransmitter chemical binding to the receptor, are called agonists. Antagonist drugs block a chemical response at a neurotransmitter receptor.

Detailed explanation-3: -Drugs can influence the synapse in two ways: they can either act as agonists or antagonists. Agonists are substances that bind to synaptic receptors and increase the effect of the neurotransmitter. Antagonists also bind to synaptic receptors but they decrease the effect of the neurotransmitter.

Detailed explanation-4: -Psychoactive drugs can act as agonists or antagonists for a given neurotransmitter system. Agonists are chemicals that mimic a neurotransmitter at the receptor site and, thus, strengthen its effects. An antagonist, on the other hand, blocks or impedes the normal activity of a neurotransmitter at the receptor.

Detailed explanation-5: -Some drugs, such as marijuana and heroin, can activate neurons because their chemical structure mimics that of a natural neurotransmitter in the body. This allows the drugs to attach onto and activate the neurons.