Drugs and Consciousness Psychoactive Drugs: chemicals that alters one’s perceptions and mood
33K - views

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

Agonist Molecule Mimics . Drugs Prevent . Proper Reuptake. 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

Agonist Molecule Mimics

Drugs Prevent

Proper Reuptake

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

withdrawalDiscomfort and distress that follow discontinuing the use of an addictive drugWithdrawal can cause physical

pain- WHY? Write it down!

Physical dependencePsychological dependence

Slide4

Drugs and Consciousness

Misconceptions about addictionsAddictive drugs quickly corrupt

Addictions can’t be overcome voluntarily; therapy is a mustWe can extend the concept of addiction to cover not just drug dependencies but a whole spectrum of repetitive pleasure seeking

behavior… but should we? Shopping Addiction?Work Addict?

Slide5

Drugs and Consciousness

Three types of psychoactive drugsDepressantsStimulants

Hallucinogens

Slide6

Drugs and Consciousness

Depressants: drugs that reduce neural activity and slow body functions

Slide7

Drugs and Consciousness

AlcoholLowers inhibitions and judgmentA person’s various attributes become stronger

Helpful person= more helpfulAggressive person= more aggressive

Slide8

Drugs and Consciousness

Dosage:

Lower doses relax the drinker by slowing the sympathetic nervous

systemReaction speed slows, speech slurs, skill performance is

alteredLarger doses can become problematic

Denton & Krebs StudyAs blood-alcohol level increases, moral judgments falter.

Conclusion: Virtually all will drive home from a bar, even if given a breathalyzer test and told they are intoxicated.

Slide9

Drugs and Consciousness

Side effects of alcohol:Effects memory

Disrupts the processing of recent experiences into long-term memoriesStudies also show problems transferring memories from intoxicated mind to the sober mind

Suppresses REM sleepReduces self awareness

Focus on immediate situation without looking at the future50% of rapists acknowledge drinking prior to committing the crime

Slide10

Drugs and Consciousness

Barbiturates

Tranquillizers that mimic alcoholCan be used to induce sleep or lower anxiety

OpiatesOpium, Morphine,

and Heroin Depress neural functions and communicationsLong term withdrawal

SymptomsBody stops producing endorphins Feeling lethargic

Respiratory Failure

Slide11

Drugs and Consciousness

StimulantsCaffeine (most used drug), nicotine

, amphetamines, and cocaine are all examplesSpeed up body functionsUsed to stay awake, lose weight,

boost

moodCan be addictiveCan lead to “crash”

Slide12

Methamphetamine

Triggers the release of dopamine which stimulates brain cells that enhance mood and energy. Over time will reduce dopamine levels

Causes depressed functioning Highly addictiveAftereffects

Irritability, insomnia, hypertension, seizures, depression, violent outbursts.

Slide13

Slide14

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

positionMay lead to emotional disturbance, suspiciousness, convulsion, cardiac arrest, respiratory failure.

Slide15

Drugs and Consciousness

HallucinogensDistort perception and evoke images

LSDCreated in 1943 by Albert Hoffmann ( a chemist)

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

Geometrical shapes meaningful images dreamlike scenes

Slide16

Drugs and Consciousness

Marijuana

Leaves and flowers of the hemp plant

(

cultivated for 5,000 years for its fiber)THC is the active ingredient

Smoking marijuana gets THC to brain in 7 secondsEffects of marijuanaRelaxes and produces euphoric high

in subject taking marijuanaMild hallucinations occurAmplified sensitivity to color, sound, tastes, and smells

Slide17

Drugs and Consciousness

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

Disrupts memory formation and recall abilitiesDepresses sex hormones in males and lowers sperm levels

More lung damage than cigarette smoking

Slide18

Drugs and Consciousness

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

Slide19

Slide20

Slide21

Longitudinal study

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

Slide22