Psychology

1. Psychoactive Drugs
Group three

2. Psychoactive drugs
• Psychoactive drugs are a chemicals that
changes brain function also alters perception,
Mood,Thinking and Behavior.
• Induce an altared state of consciousness.
• Three common psychoactive drugs
nAlcohol
nNicotine
nCaffeine.

4. Types of psychoactive drugs
• There are 4 main groups of psychoactive
drugs.
nStimulants("Uppers")
nDepressants ("Downers")
nNarcotics
nHallucinogens

5. Stimulants
• Drugs that are speed up or arousal function of
the brain and body.
• Include; Cocaine, Caffeine, nicotine,and
Amphetamines.
• Large amount of Stimulants can cause physical
effects such as heart, blood vessels, and
seizure problems.
• Also large doses can Cause mental and
emotional effects such as extreme
nervousness, anxiety, and anger.

6. Cocaine
• White powder Stimulant derived from leaves
of the coca plants.
• Rapidly acting powerful Stimulant.
• Regular use can cause depression, weight
loss,physiological dependence,tissue damage
in nose and cardiac problems ( increase
chance of heart attack).
• Possibility of being infected with HIV.
• Cocaine can cause psychosis.

8. Caffeine
• Caffeine found in coffee, tea and Chocolate.
• Most people use caffeine in some everyday...it
considered the most popular and widely used
psychoactive drug.
• Increases attentiveness and improves mood
• It is physically addictive
¡Individuals can experience withdrawal
symptoms if stop intake (usually from afew
days up to week will have headaches,be
irritable, drowsy or be tired.

9. Conti...
• High doses of caffeine it can produce
anxiety,restlessness, increase blood pressure,
increase heart rate, decrease appetite and
increase stomach acid release.

10. Nicotine
• Nicotine found tobacco leaves, is one of the most
common Stimulant.

12. Amphetamines
• Amphetamines are stimulant drugs that have
an effect similar to that of the sympathetic
Nervous system.
• Some people use Amphetamines illegally to
stay awake and alert to improve athletic
performance or to lose weight.
• Physiological and psychological dependence
may occur.
• Tolerance to Amphetamines easily developed.

13. Depressants
• Depressants or Sedatives are drugs tend to slow
down functioning of the central nervous system.
• They can slow down heart rate,breathing
rate,and reduces blood pressure.
• Commonly used Depressants
nBarbiturates
nTranquilizers
nMethaqualone
nAlcohol

14. Common properties of drug
addiction
Physical dependence:
• State of physiological need to take more
of substance after continued use.

15. Tolerance
• Tolerance: reduce responsiveness to a drug,
promoting the user to increase the dosage to
achieve affects previously obtained by lower
doses of drug.

17. Withdrawal symptoms
• The discomfort and distress that follow when
person who is dependent on drug discontinues
the use of the drug.