Psychology Chapter: Sleep Stages Overview

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Questions and Answers

What brain activity is predominately seen during Stage 2 sleep?

Alpha waves

Delta waves

Beta waves

Theta waves (correct)

What is the function of sleep spindles?

To facilitate muscle paralysis

To increase wakefulness

To signal the end of sleep cycles

To enhance learning and memory (correct)

What does manifest content refer to in dreams?

The frequency of brain waves while dreaming

The hidden meaning of a dream

The emotional state during a dream

The storyline or actual content of a dream (correct)

What characterizes REM stage 3 sleep?

Low frequency, high amplitude delta waves (D) Signup and view all the answers

How might a K-complex function in sleep?

To react to environmental stimuli (D) Signup and view all the answers

What defines insomnia?

A consistent difficulty in falling or staying asleep (B) Signup and view all the answers

What is a characteristic of REM sleep behavior disorder (RBD)?

Active behaviors during REM sleep (D) Signup and view all the answers

What is the collective unconscious according to Jung?

A shared repository of information (C) Signup and view all the answers

What type of drugs act as agonists of the dopamine neurotransmitter system?

Stimulants (C) Signup and view all the answers

Which of the following drugs is considered a synthetic opioid?

Methadone (B) Signup and view all the answers

What is the common characteristic of hallucinogens?

Alter sensory and perceptual experiences (D) Signup and view all the answers

What distinguishes opiates from other opioids?

They are derivatives of opium. (A) Signup and view all the answers

What is a common method of administration that stimulant users seek for increased euphoric effects?

Intravenous injection (B) Signup and view all the answers

How does methadone assist individuals in overcoming opioid addiction?

By managing withdrawal symptoms (D) Signup and view all the answers

In what way does meditation differ from hypnosis?

Meditation is typically performed alone. (C) Signup and view all the answers

What term describes the event when sensory information is detected by a sensory receptor?

Sensation (D) Signup and view all the answers

What is the process of converting sensory stimulus energy into action potentials called?

Transduction (D) Signup and view all the answers

What term describes the minimum amount of stimulus energy required for detection 50% of the time?

Absolute threshold (A) Signup and view all the answers

How is the difference required to detect a change in stimuli referred to?

Difference threshold (D) Signup and view all the answers

What type of processing is driven by sensory information from the environment?

Bottom-up processing (A) Signup and view all the answers

What phenomenon explains why we may not notice stimuli that remain constant over time?

Sensory adaptation (C) Signup and view all the answers

Which term describes the ability to identify a stimulus in a distracting background?

Signal detection theory (A) Signup and view all the answers

What does the amplitude of a wave refer to?

Distance from the center line to the crest or trough (C) Signup and view all the answers

Which part of the eye serves as a barrier and focuses light waves?

Cornea (D) Signup and view all the answers

What type of hearing loss is caused by a failure to transmit neural signals from the cochlea to the brain?

Sensorineural hearing loss (D) Signup and view all the answers

Which device is designed to aid individuals with severe hearing loss?

Cochlear implant (D) Signup and view all the answers

What condition is associated with vertigo and increased pressure in the inner ear?

Ménière's disease (C) Signup and view all the answers

Which perception refers to the ability to sense the position of the body?

Proprioception (A) Signup and view all the answers

Which principle of Gestalt psychology describes our tendency to perceive a continuous flow rather than broken lines?

Continuity (A) Signup and view all the answers

What is the process called that involves sending signals to the olfactory bulb after an odor molecule binds to a receptor?

Transduction (A) Signup and view all the answers

What type of pain signals tissue damage and is often associated with inflammation?

Inflammatory pain (A) Signup and view all the answers

Which principle explains our tendency to group similar items in our visual field?

Similarity (C) Signup and view all the answers

What type of photoreceptor cells are primarily responsible for color perception?

Cones (C) Signup and view all the answers

Which theory of color vision suggests that all colors can be created by combining red, green, and blue?

Trichromatic theory (C) Signup and view all the answers

What do we call the visual sensation that continues after the stimulus has been removed?

Afterimage (C) Signup and view all the answers

Which type of depth perception cue requires the use of both eyes?

Binocular cues (D) Signup and view all the answers

What does the temporal theory of pitch perception suggest about frequency coding?

Frequency is coded by the activity level of a sensory neuron (C) Signup and view all the answers

Which theory suggests that sound frequency sensitivity is determined by different portions of the basilar membrane?

Place theory (C) Signup and view all the answers

What term describes the difference in loudness of a sound between the two ears that aids in sound localization?

Interaural level difference (D) Signup and view all the answers

Linear perspective is a technique used in depth perception. What does it involve?

The convergence of parallel lines (B) Signup and view all the answers

Study Notes

Sleep Stages and Their Characteristics

Stage 2 sleep is characterized by deep relaxation, dominated by theta waves interrupted by sleep spindles.
Sleep spindles are rapid bursts of higher frequency brain activity important for learning and memory.
K-complexes are high amplitude brain activity patterns that can respond to environmental stimuli, serving as a bridge to higher arousal.
REM sleep, also called deep or slow-wave sleep, features low frequency (less than 3 Hz), high amplitude delta waves.
Dreams vary in meaning across cultures, with manifest content being the actual storyline and latent content representing hidden meanings.

Theories of Dreams and Consciousness

Jung's concept of the collective unconscious refers to a shared repository of universal experiences.
Lucid dreams allow individuals to become aware of their dreaming state and exert control over the dream's content.

Sleep Disorders

Insomnia is the most common sleep disorder involving difficulties in falling or staying asleep.
Cognitive-behavioral therapy addresses cognitive processes and problem behaviors related to insomnia.
Parasomnias involve disruptive motor activities during sleep, with sleepwalking characterized by complex behaviors performed while the person remains unresponsive.
REM Sleep Behavior Disorder (RBD) occurs when muscle paralysis during REM does not happen, causing physical activities like kicking and yelling during dreams.

Psychoactive Substances

Stimulants increase neural activity and often act as dopamine agonists, with methamphetamine being a prominent example sought for euphoric highs.
Opioids include heroin, morphine, and codeine, which have analgesic properties; opioids derived from opium are termed opiates.
Methadone clinics help manage opioid withdrawal symptoms using methadone, which is less euphorigenic than heroin.
Hallucinogens cause profound sensory and perceptual alterations.
Hypnosis involves focused attention and can alter thoughts and perceptions through therapeutic suggestion, while meditation enhances awareness through concentration techniques.

Sensation and Perception

Sensory receptors detect specific stimuli, leading to sensation by relaying action potentials to the central nervous system.
Transduction is the conversion of sensory stimulus energy to action potentials.
Absolute threshold refers to the minimum stimulus energy required for detection 50% of the time, while subliminal messages are below conscious awareness.
Just noticeable difference (jnd) signals the smallest difference in stimuli that can be detected.
Perception involves organizing and interpreting sensory information. Bottom-up processing is stimulus-driven, whereas top-down processing relies on prior knowledge.
Sensory adaptation occurs when stimuli are constant, leading to decreased perception, while inattentional blindness is the failure to notice visible stimuli due to focused attention elsewhere.

Visual and Auditory Processing

Signal detection theory explains how we identify stimuli amid distractions.
Wave amplitude, wavelength, and frequency describe sound and light characteristics in terms of physical measures.
The visible spectrum is the range of electromagnetic radiation visible to the human eye.
The cornea protects and focuses light, with the pupil adjusting size based on light and emotional state. The iris contains muscles regulating pupil size.
Cones are photoreceptor cells responsible for color perception in bright conditions, while rods function in low light and peripheral movement perception.
Trichromatic theory and opponent-process theory describe color vision through combinations of red, green, blue, and opposing color pairs.
Depth perception utilizes both binocular and monocular cues to assess the spatial relationship between objects.
The temporal theory of pitch perception and place theory explain sound frequency processing in the auditory system.

Hearing Loss and Olfactory Sense

Deafness can be congenital or result from cochlear transmission issues, such as in Ménière's disease.
Cochlear implants restore hearing using electronic devices to bypass damaged cells.
Olfactory receptor cells detect odors, sending signals to the olfactory bulb located in the frontal lobe.
Chemical communication via pheromones occurs among many species.

Pain and Body Senses

Thermoception and nociception detect temperature and potential pain signals, with inflammatory pain indicating tissue damage.
Congenital insensitivity to pain is a rare disorder where individuals cannot feel pain.
The vestibular sense helps maintain balance, while proprioception and kinesthesia relate to body position and movement perception.

Gestalt Psychology

Gestalt psychology emphasizes that perception involves more than sensory stimuli combinations, promoting concepts like figure-ground relationships and similarity in visual perception.
Principles such as continuity and closure guide the perception of smooth lines over jagged ones and the completion of incomplete shapes.

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Description

This quiz explores Stage 2 sleep, including the characteristics of theta waves, sleep spindles, and K-complexes. Test your knowledge on how these brain patterns contribute to relaxation, learning, and memory. Understand the significance of these sleep components in maintaining overall well-being.