Chapter 5: Altered States of Consciousness – Psychology Study Notes

Altered States of Consciousness

Introduction

Altered states of consciousness refer to significant changes in awareness, perception, or mental functioning that differ from ordinary waking consciousness. These states can be induced by psychological techniques, meditation, or psychoactive substances, and are a central topic in introductory psychology.

Hypnosis: Altered Consciousness or Role Playing?

Definition and Process

• Hypnosis is a systematic procedure that increases suggestibility in individuals, often involving a hypnotic induction process.

• Approximately 15% of people are highly susceptible to hypnosis and are considered good participants.

Effects of Hypnosis

• Anesthesia: Hypnosis can be used to treat chronic pain by reducing the perception of pain.

• Sensory Distortions and Hallucinations: Individuals may experience changes in sensory perception, including hallucinations.

• Disinhibition: Hypnotized individuals may perform actions they would not normally do.

• Posthypnotic Suggestions and Amnesia: Suggestions given during hypnosis can influence behavior after the session, and some individuals may not remember the hypnotic experience.

Theories of Hypnosis

• Role-Playing Theory: Hypnotized individuals act according to social expectations and play a role.

• Divided Consciousness Theory: Hypnosis involves a split in consciousness, sometimes referred to as dissociation, where part of the mind is aware while another part is not.

Example: A person under hypnosis may not feel pain during a dental procedure due to hypnotic anesthesia.

Meditation: Pure Consciousness or Relaxation?

Definition and Types

• Meditation consists of practices that train attention to heighten awareness and bring mental processes under greater voluntary control.

• Common forms include yoga, zen, and transcendental meditation (TM).

Physiological and Psychological Benefits

• Some benefits are similar to those produced by effective relaxation procedures, such as reduced stress and improved physiological functioning.

• Mindfulness meditation is associated with improvements in attention, working memory, problem-solving, emotional regulation, blood pressure, self-esteem, general well-being, and social interactions.

Types of Meditation Practices

• Focused Attention: Concentrating on a single object, thought, or sensation.

• Open Monitoring: Observing all aspects of experience without focusing on any one thing.

Example: Practicing mindfulness meditation daily can help reduce anxiety and improve emotional regulation.

Altering Consciousness with Drugs

Categories of Psychoactive Drugs

Psychoactive drugs are chemicals that modify mental, emotional, or behavioral functioning. They are classified into six main categories:

Category	Main Effects	Examples
Narcotics (Opioids/Opiates)	Relieve pain	Morphine, Oxycodone
Sedatives	Induce sleep	Barbiturates, Benzodiazepines
Stimulants	Increase CNS activity	Caffeine, Amphetamines, Cocaine
Hallucinogens	Distort sensory and perceptual experience	LSD, Psilocybin
Cannabis	Produces mild, relaxed euphoria	Marijuana, THC
Alcohol	Produces relaxed euphoria, decreases inhibition	Beer, Wine, Spirits
Other	MDMA produces warm, friendly euphoria	MDMA (Ecstasy)

Example: MDMA (Ecstasy) is known for producing feelings of emotional warmth and empathy.

Mechanisms of Drug Action

Neurochemical Effects

• Psychoactive drugs alter neurotransmitter activity in the brain, affecting mental and emotional states.

• Cocaine blocks the reuptake of dopamine, norepinephrine, and serotonin, increasing their levels in the synapse.

• Amphetamines and cocaine increase activity in dopamine circuits, which are associated with reward.

• MDMA leads to large releases of serotonin, resulting in positive affect.

• THC in cannabis activates cannabinoid receptors, leading to the release of endorphins.

Example: The pleasurable effects of cocaine are due to increased dopamine activity in the brain's reward pathways.

Factors Influencing Drug Use

Multifactorial Causation

• Drug use is influenced by multiple factors, including:

  • Age and body weight

  • Mood

  • Motivation and personality

  • Expectations of the drug's effects

  • Previous experience with the drug (tolerance)

  • Setting in which the drug is consumed

  • Dose and potency of the drug

Example: A person's experience with alcohol may differ depending on their mood and the social setting.

Neural Circuits and Drug Effects

Mesolimbic Dopamine Pathway

• The mesolimbic dopamine pathway is a key neural circuit involved in the reinforcing effects of most abused drugs.

• Axons in this pathway run from the midbrain through the medial forebrain bundle to the nucleus accumbens and prefrontal cortex.

• Heightened dopamine activity in this pathway is believed to underlie the rewarding effects of recreational drugs.

Example: Stimulants like cocaine and amphetamines increase dopamine activity in the mesolimbic pathway, leading to feelings of euphoria.

Drug Dependence

Physical Dependence

• Physical dependence occurs when a person must continue taking a drug to avoid withdrawal illness.

• Withdrawal symptoms are specific to the drug and can be severe for opioids, alcohol, and stimulants.

• Withdrawal symptoms may represent conditioned responses.

Psychological Dependence

• Psychological dependence is characterized by a mental and emotional craving for a drug.

• Possible with all recreational drugs, but rare for hallucinogens.

Overdose

• Overdose is most common with depressants (especially in combination), stimulants, and opioids.

Example: Individuals addicted to opioids may experience severe withdrawal symptoms if they stop using the drug abruptly.

Summary Table: Types of Drug Dependence

Type of Dependence	Description	Common Drugs
Physical Dependence	Need to continue drug use to avoid withdrawal symptoms	Opioids, Alcohol, Stimulants
Psychological Dependence	Mental/emotional craving for the drug	All recreational drugs (rare for hallucinogens)

Additional info: The notes have been expanded with definitions, examples, and academic context to ensure completeness and clarity for exam preparation.