Wednesday 12-03-2014

• On your desk: ch 7 vocab, notes from last class

• • Warm-up: Crash course: “sleep and dreams”• https://

www.youtube.com/watch?v=rMHus-0wFSo

•

Movie: A Beautiful Mind• You need a sheet of paper. Name and movie

title.

• Take notes as you watch • Track what happens to John Nash’s

psychological processes.• How is he at the beginning?• How does he change?• What treatments are attempted?• How does it work out in the end?

Altered States of Consciousness

Sleep and Dreams, Hypnosis

andDrugs

• What is consciousness?

• State of awareness, can be at various states • or levels

• Consciousness also can be altered… by what?• Sleep and dreams• Hypnosis• Meditation• Drugs

Sleep

• What is it?• Characterized by unresponsiveness to

environment and usually limited physical mobility.

Why do we sleep?

• Several theories..

• To “re-energize” or charge up.• To conserve energy, a sort of mini-hibernation• Adaptive process from evolving to keep out of

harm’s way at night.• To clear our minds of useless information• Perchance to dream…

Stages of sleep• Stage I: slowing pulse, even breathing, irregular brain waves• 10 minutes “just drifting off”• Stage II: eyes rolling side to side, brain waves shift to high

amplitude, low frequency • 30 minutes• Stage III: large amplitude delta waves• Stage IV: deepest sleep of all, difficult to awaken• Large delta waves, sleep walking, talking may happen with no

memory. • Stage V: REM sleep (rapid eye-, movement), active sleep:

twitching body, irregular pulse and breath, hormones fluctuate• Brain waves similar to person awake• 15-45 minutes, then cycle back to stage IV. • Each cycle is around 90 minutes

Sleep Disorders

• 1. Insomnia• Prolonged, abnormal inability to sleep• Causes: stress, drugs, depression

• 2. Sleep Apnea• Frequent interruptions in breathing while asleep• Causes: physical blockage of airway (tonsils,

obesity, infections, etc)

• 3. Narcolepsy- permanent feeling of sleepiness, often with unusual sleep patterns

• Often have “sleep attacks” with random periods of REM sleep.

• 4. Nightmares – frightening dreams during REM• Night Terrors- during stage IV sleep with

physical effects (pulse,sweats,etc)—no memory

Dreams…

• Mostly about mundane activities• We only remember the more “interesting,

sexier, exciting ones”• Dream interpretation…• 1. dreams have hidden meanings (Freud,

Inuit culture, etc)• 2. dreams have no meanings (N. Kleitman)

What is a dream?

http://vimeo.com/1559454

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Hypnosis

Hypnos: Greek god of sleep

http

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A social interaction in which one person

(the hypnotist) suggests to another

(the subject) that certain perceptions, feelings, thoughts, or behaviors will spontaneously

occur.

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Aspects of Hypnosis

1. Posthypnotic Suggestion: Suggestion carried out after the subject is no longer hypnotized.

2. Posthypnotic Amnesia: Supposed inability to recall what one experienced during hypnosis.

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Facts and Falsehood

Those who practice hypnosis agree that its power resides in the subject’s openness to

suggestion.

Can anyone experience hypnosis? Yes, to some extent.

Can hypnosis enhance recall of forgotten events?

No.

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Facts and Falsehood

Can hypnosis be therapeutic?Yes. Self-suggestion

can heal too.

Can hypnosis alleviate pain?Yes. Lamaze can

do that too.

Can hypnosis force people to act against their will?

No.

Biofeedback

• Technique when a person learns to control their own physiological processes.

• Uses: tension headaches, blood pressure

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Meditation

• 1. transcendental- focus on use of mantras• 2. mindfulness – focus on present• 3. breath- focus on breath

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Drugs and Psychology

• Psychology: • study of mental and behavioral processes

• Drugs effect both.

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Drugs and Consciousness

Psychoactive Drug: A chemical substance that alters perceptions and mood (effects

consciousness).

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Influences on Drug UseThe use of drugs is based on biological,

psychological, and social-cultural influences.

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Dependence & Addiction

Continued use of a psychoactive drug

produces tolerance. With repeated

exposure to a drug, the drug’s effect lessens. Thus it takes greater

quantities to get the desired effect.

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Withdrawal & Dependence

1. Withdrawal: Upon stopping use of a drug (after addiction), users may experience the undesirable effects of withdrawal.

2. Dependence: Absence of a drug may lead to a feeling of physical pain, intense cravings (physical dependence), and negative emotions (psychological dependence).

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Misconceptions about Addiction

1. Addictive drugs quickly corrupt.

2. Addiction cannot be overcome voluntarily.

3. Addiction is no different than repetitive pleasure-seeking behaviors.

Addiction is a craving for a chemical substance, despite its adverse

consequences (physical & psychological).

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Psychoactive Drugs

Psychoactive drugs are divided into three groups.

1. Depressants 2. Stimulants3. Hallucinoge

ns

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Depressants

Depressants are drugs that reduce neural activity and slow body functions. They

include:1. Alcohol 2. Barbiturat

es3. Opiates

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Alcohol

1. Alcohol affects motor skills, judgment, and memory…and increases aggressiveness while reducing self awareness.

Drinking and Driving

Daniel H

omm

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AA

, NIH

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Ray N

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ife Pictures/ G

etty Images

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Barbiturates

2. Barbiturates: Drugs that depress the activity of the central nervous system, reducing anxiety but impairing memory and judgment. Nembutal, Seconal, and Amytal are some examples.

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Depressants

3. Opiates: Opium and its derivatives (morphine and heroin) depress neural activity, temporarily lessening pain and anxiety. They are highly addictive.

http://opioids.com/tim

eline

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Stimulants

Stimulants are drugs that excite neural activity and speed up body functions.

1. Caffeine2. Nicotine3. Cocaine4. Ecstasy5. Amphetamines6. Methamphetami

nes

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Caffeine & Nicotine

Caffeine and nicotine increase heart and breathing rates and other autonomic

functions to provide energy.

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Amphetamines

Amphetamines stimulate neural activity, causing accelerated body functions and

associated energy and mood changes, with devastating effects.

National Pictures/ Topham

/ The Im

age Works

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Ecstasy

Ecstasy or Methylenedioxymethamp

hetamine (MDMA) is a stimulant and mild

hallucinogen. It produces a euphoric high and can

damage serotonin-producing neurons, which results in a

permanent deflation of mood and impairment of

memory.

Greg S

mith/ A

P P

hotos

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Cocaine

Cocaine induces immediate euphoria followed by a crash. Crack, a form of cocaine, can be smoked.

Other forms of cocaine can be sniffed or injected.

http://ww

w.ohsinc.com

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Hallucinogens

Hallucinogens are psychedelic (mind-manifesting) drugs

that distort perceptions and evoke sensory images in the

absence of sensory input.

Ronald K

. Siegel

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Hallucinogens

1. LSD: (lysergic acid diethylamide) powerful hallucinogenic drug (ergot fungus) that is also known as acid.

2. THC (delta-9-tetrahydrocannabinol): is the major active ingredient in marijuana (hemp plant) that triggers a variety of effects, including mild hallucinations.

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Hemp Plant

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Drugs

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Influences on Drug Use

The graph below shows the percentage of US high- school seniors reporting their use of alcohol, marijuana, and cocaine from the

70s to the late 90s.

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Influences on Drug Use

The use of drugs is based on biological, psychological, and social-cultural influences.