AP PSYCHOLOGY

Detailed explanation-1: -A drug or other substance that affects how the brain works and causes changes in mood, awareness, thoughts, feelings, or behavior. Examples of psychoactive substances include alcohol, caffeine, nicotine, marijuana, and certain pain medicines.

Detailed explanation-2: -Common psychoactive drugs include: Depressants. Opioids. Stimulants.

Detailed explanation-3: -Hallucinogens are a diverse group of drugs that alter perception, thoughts, and feelings. They cause hallucinations, or sensations and images that seem real, but they are not. Hallucinogens are split into two categories: classic hallucinogens and dissociative drugs.

Detailed explanation-4: -Drugs and Psychosis produce certain effects, such as hallucinations and delusions [11]. These are used primarily to obtain the excitatory actions on brain reward systems. Paradoxically, excessive drug intake can decrease the activity of reward systems [12].

Detailed explanation-5: -Psychoactive drugs alter synaptic transmission by modulating neurotransmitter amounts and availability or by affecting receptor activity.