What are the three categories of psychoactive substances? This question is for a narcotics class

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Psychology

What are the three categories of psychoactive substances?
This question is for a narcotics class

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Psychoactive drugs chemical substances that alter perceptions and moods Substance abuse disorder a disorder characterized by continued substance craving and use despite significant life disruption andor physical risk The three categories depressants stimulants and hallucinogens are important Depressants and their effects Drugs such as alcohol barbiturates and opiates that reduce neural activity and slow body functions a Alcohol Alcohol is a central nervous system CNS depressant meaning it slows neural activity in the brain and spinal cord GABA an inhibitory neurotransmitter and glutamate an excitatory neurotransmitter both interact with alcohol to produce the effects we associate with drinking When alcohol enters the body it acts as an agonist with inhibitory GABA receptors making them inhibitorier MRI scans show brain shrinkage enlarged ventricles in women with alcohol use disorder left compared with women in a control group right Slowed neural processing causes reactions to slow speech to slur and skilled performance to See Answer

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