Drugs and Consciousness Psychoactive Drugs: chemicals that alters one’s perceptions and mood
13K - views

Drugs and Consciousness Psychoactive Drugs: chemicals that alters one’s perceptions and mood

Drugs and Consciousness. Continued use of psychoactive drugs can lead to tolerance. Diminishing effect with regular use of the same drug requiring the user to take larger and larger doses before discontinuing the use of an addictive drug.

Download Presentation

Drugs and Consciousness Psychoactive Drugs: chemicals that alters one’s perceptions and mood




Download Presentation - The PPT/PDF document "Drugs and Consciousness Psychoactive Dru..." is the property of its rightful owner. Permission is granted to download and print the materials on this web site for personal, non-commercial use only, and to display it on your personal computer provided you do not modify the materials and that you retain all copyright notices contained in the materials. By downloading content from our website, you accept the terms of this agreement.



Presentation on theme: "Drugs and Consciousness Psychoactive Drugs: chemicals that alters one’s perceptions and mood"— Presentation transcript:

Slide1

Drugs and Consciousness

Psychoactive Drugs: chemicals that alters one’s perceptions and mood

Slide2

Drugs and Consciousness

Continued use of psychoactive drugs can lead to toleranceDiminishing effect with regular use of the same drug requiring the user to take larger and larger doses before discontinuing the use of an addictive drug

Slide3

Drugs and Consciousness

Side effects of toleranceLead to withdrawal

Discomfort and distress that follow discontinuing the use of an addictive drug

Withdrawal can cause physical pain

Slide4

Drugs and Consciousness

Physical dependencePsychological dependence

Slide5

Drugs and Consciousness

Misconceptions about addictionsAddictive drugs quickly corrupt

Addictions can’t be overcome voluntarily; therapy is a must

We can extend the concept of addiction to cover not just drug dependencies but a whole spectrum of repetitive pleasure seeking behavior

Slide6

Drugs and Consciousness

Three types of psychoactive drugsDepressants

Stimulants

Hallucinogens

Slide7

Drugs and Consciousness

Depressants: drugs that reduce neural activity and slow body functions

Slide8

Drugs and Consciousness

AlcoholLowers inhibitions and judgment

A person’s

various attributes

become stronger

Helpful person= more helpful

Aggressive person= more aggressive

Etc.

Slide9

Drugs and Consciousness

Dosage:Lower doses relax the drinker by slowing the sympathetic nervous system

Larger doses can become problematic

Denton and Krebs Bar Study

Slide10

Drugs and Consciousness

Side effects of alcohol:Effects memory

Disrupts the processing of recent experiences into long-term memories

Studies also show problems transferring memories from intoxicated mind to the sober mind

Slide11

Drugs and Consciousness

Suppresses REM sleep

Slide12

Drugs and Consciousness

Reduces self awarenessFocus on immediate situation without looking at the future

50% of rapists acknowledge drinking prior to committing the crime

Slide13

Drugs and Consciousness

Effects of alcohol also depends on expectations

Cultural expectations play a large role

Slide14

Drugs and Consciousness

BarbituratesTranquillizers that mimic alcohol

Can be used to induce sleep or lower anxiety

Slide15

Drugs and Consciousness

OpiatesMorphine and Heroin

Depress neural functions and communications

Long term withdrawal symptoms with both

Slide16

Drugs and Consciousness

StimulantsCaffeine (most used drug), nicotine, amphetamines, and cocaine are all examples

Speed up body functions

Used to stay awake, lose weight, boost mood

Can be addictive

Can lead to “crash”

Slide17

Drugs and Consciousness

Cocaine3% of the population have admitted to using cocaine

Rush depletes serotonin, dopamine, and norepinephrine which leads to the “crash”

Studies show cocaine leaves the neural reward switch in the on position

Slide18

Drugs and Consciousness

HallucinogensDistort perception and evoke images

LSD

Created in 1943 by Albert Hoffmann

“…perceived an uninterrupted stream of fantastic pictures, extraordinary shapes with intense, kaleidoscopic play of colors”

Slide19

Drugs and Consciousness

Phases of hallucinationGeometrical shapes meaningful images dreamlike scenes

Slide20

Drugs and Consciousness

MarijuanaLeaves and flowers of the hemp plant (cultivated for 5,000 years for its fiber)

THC is the active ingredient

delta-9-tetrahydrocannabinol

Slide21

Drugs and Consciousness

Smoking marijuana gets THC to brain in 7 secondsTime varies for other methods

Effects of marijuana

Relaxes and produces euphoric high in subject taking marijuana

Mild hallucinations occur

Amplified sensitivity to color, sound, tastes, and smells

Slide22

Drugs and Consciousness

Side effects of marijuanaImpairs motor coordination, perceptual skills, reaction time

Disrupts memory formation and recall abilities

Slide23

Drugs and Consciousness

Depresses sex hormones in males and lowers sperm levelsMore lung damage than cigarette smoking

Study followed 654 junior high students into their 20’s

Found heavy users developed more health problems and family problems than their counterparts

Example of a longitudinal study

Slide24

Longitudinal study

Scientific study that follows a group of people throughout a period of timeTypically used to study developmental trends

Cross-sectional study

Scientific study

in which data are collected from groups of participants of different ages and compared so that conclusions can be drawn about differences due

to age