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Psychoactive Drugs.

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Presentation transcript:

Psychwrite: Date: 1 pt Copy Question: 1 pt Answer question in 3-5 lines: 3 pts Why do some students take stimulants (caffeine, energy drinks, etc.)? Do they really help make and keep them alert? Why or why not?

Psychoactive Drugs

Psychological v. Physical Dependence Drug Tolerance The diminishing effect with regular doses of the same drug. Psychological v. Physical Dependence

Steps to dependency 1. Experimentation 2. Regular Use 3. Daily Preoccupation 4. Dependency

Withdrawal The discomfort & distress that follow when a person who is dependent on a drug discontinues the use of that drug.

Psychoactive Drugs- chemical substance that alters perceptions, mood or behavior. 4 Categories: 1. Depressants: slow down body functions. 2. Stimulants: arouse body functions. 3. Opiates: relieve pain, causes euphoria 4. Hallucinogens: distort perceptions or evoke sensation without sensory input. * Marijuana

Psychoactive Drugs and Synapses Psychoactive drugs affect synapses and neurotransmitters in three ways: Binding with receptors Blocking receptor site Blocking neurotransmitters’ reuptake Reuptake: unused neurotransmitter chemical is reabsorbed by the sending neuron.

Depressants Alcohol Slows down sympathetic nervous system. Disrupts memory processing. Reduces self-awareness. Involved in up to 60% of all crimes. The worst drug from a macro perspective out there. Why? High potential for dependence

Depressants Barbiturates Tranquilizers Taken to sleep (but reduce REM sleep). Taken with other drugs- you can get a synergistic effect. High potential for dependence.

Stimulants Amphetamines Cocaine Caffeine Nicotine MDMA-Ecstasy Meth Speed Cocaine Crack Caffeine Nicotine MDMA-Ecstasy Meth “the crash”

Opiates Opium, Heroin and Morphine Prescription Pain Killers Addiction comes fast and the withdrawal symptoms are bad (high potential)

Hallucinogens/Psychedelics LSD (Acid) Can cause PTSD and schizophrenia. Short-term memory loss, paranoia, violent outbursts, nightmares, flashbacks and panic attacks Low potential for dependence but you develop a tolerance for it

Hallucinogens/Psychedelics Marijuana THC “Gateway Drug” Lowers inhibition Causes relaxation, mild euphoria Can amplify senses Impairs memory Can stay in your system for a month (it attaches to your fat) Is it addictive?

Celebrity Drug Death In groups of 2-3 (not 1, not 4 or 5) complete the assignment. Identify their age at death and how they died. Answer questions on pages 2-3 for extra credit. Turn in when finished.