Sleep and Dreaming

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34 Terms

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Wakefulness

This is when you're fully awake and alert.

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Stage 1 - Transition to Sleep (NREM 1)

This stage marks the transition from wakefulness to sleep.

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Stage 2 - Light Sleep (NREM 2)

This stage is characterized by a decrease in body temperature and heart rate.

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Stage 3 - Deep Sleep (NREM 3)

Also known as slow-wave sleep (SWS), this is the deepest stage of non-rapid eye movement (NREM) sleep.

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REM Sleep (Rapid Eye Movement)

is characterized by rapid eye movements, vivid dreams, and heightened brain activity.

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Pineal Gland

A small gland in the brain that produces melatonin.

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Melatonin

A hormone that regulates sleep-wake cycles.

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Sleep onset insomnia

refers to difficulty falling asleep at the beginning of the night. 

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Sleep maintenance insomnia

involves difficulty staying asleep throughout the night, resulting in frequent awakenings or fragmented sleep. 

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Endogenous Pacemakers

 Internal body clocks that regulate biological rhythms.

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Exogenous Zeitgebers

External cues that influence biological rhythms.

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Circadian Rhythms

The 24-hour sleep-wake cycle is regulated by the interaction of these internal and external factors.

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Vividness and Emotional Intensity

Dreams can be highly vivid and emotionally charged, reflecting a wide range of emotions from fear and anxiety to joy and love.

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Bizarre and Illogical Nature

Dreams often lack logical coherence and can present bizarre scenarios that would not occur in waking life.

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Lucid Dreaming

A state in which the dreamer becomes aware that they are dreaming and may gain some control over the dream's narrative and environment.

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Recurrent Dreams

Some dreams can be recurrent, often reflecting unresolved issues or persistent concerns in the dreamer's life.

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Sigmund Freud

Father of Psychoanalysis

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The unconscious mind

is a reservoir of thoughts, memories, and desires that are outside of conscious awareness but still influence behavior.

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Repression

A defense mechanism where the mind pushes distressing memories, thoughts, or desires into the unconscious to protect the conscious mind from anxiety.

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Wish Fulfillment

Freud proposed that dreams are a form of wish fulfillment, where unconscious desires are expressed.

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Symbolic Representation

These wishes are often not directly expressed but are represented symbolically to avoid disturbing the dreamer.

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Manifest Content

The actual content and storyline of the dream as remembered by the dreamer.

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Latent Content

The hidden psychological meaning of the dream. It represents the unconscious desires and thoughts disguised in the manifest content.

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Dream Work

The process by which the unconscious mind transforms latent content into manifest content through mechanisms like condensation, displacement, and symbolism.

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Limbic System

This part of the brain, involved in emotions and memory, is highly active during REM sleep. It contributes to the emotional and often bizarre content of dreams.

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Pons Activity

Neurons in the pons (a brainstem region) fire spontaneously and randomly during REM sleep, creating signals that the brain attempts to interpret.

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Threat-Simulation Theory

Dreams serve as an ancient biological defense mechanism by simulating potential threatening events.

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Expectation-Fulfillment Theory

Dreams discharge emotional arousals that haven't been expressed during waking hours, freeing up space in the brain to deal with emotions the next day.

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Activation-Synthesis Theory

Dreams are electrical brain impulses that pull random thoughts and imagery from memories.

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Continual-Activation Theory

During REM sleep, the unconscious brain processes procedural memory while the conscious brain's level of activation decreases, leading to the generation of a data stream from memory stores to the conscious brain.

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Insomnia

is a sleep disorder characterized by difficulty falling asleep, staying asleep, or experiencing non-restorative sleep despite adequate opportunity for sleep.

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Progressive Muscle Relaxation (PMR)

 Involves tensing and then relaxing different muscle groups systematically, promoting physical relaxation and reducing muscle tension.

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Deep Breathing Exercises

Involves slow, deep breathing from the diaphragm, focusing on inhaling and exhaling rhythmically to activate the body's relaxation response.

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Mindfulness Meditation

Involves bringing focused attention to the present moment without judgment, observing thoughts, emotions, and bodily sensations with acceptance and equanimity.