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?

    <p>Low frequency, high amplitude delta waves</p> Signup and view all the answers

    How might a K-complex function in sleep?

    <p>To react to environmental stimuli</p> Signup and view all the answers

    What defines insomnia?

    <p>A consistent difficulty in falling or staying asleep</p> Signup and view all the answers

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

    <p>Active behaviors during REM sleep</p> Signup and view all the answers

    What is the collective unconscious according to Jung?

    <p>A shared repository of information</p> Signup and view all the answers

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

    <p>Stimulants</p> Signup and view all the answers

    Which of the following drugs is considered a synthetic opioid?

    <p>Methadone</p> Signup and view all the answers

    What is the common characteristic of hallucinogens?

    <p>Alter sensory and perceptual experiences</p> Signup and view all the answers

    What distinguishes opiates from other opioids?

    <p>They are derivatives of opium.</p> Signup and view all the answers

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

    <p>Intravenous injection</p> Signup and view all the answers

    How does methadone assist individuals in overcoming opioid addiction?

    <p>By managing withdrawal symptoms</p> Signup and view all the answers

    In what way does meditation differ from hypnosis?

    <p>Meditation is typically performed alone.</p> Signup and view all the answers

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

    <p>Sensation</p> Signup and view all the answers

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

    <p>Transduction</p> Signup and view all the answers

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

    <p>Absolute threshold</p> Signup and view all the answers

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

    <p>Difference threshold</p> Signup and view all the answers

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

    <p>Bottom-up processing</p> Signup and view all the answers

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

    <p>Sensory adaptation</p> Signup and view all the answers

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

    <p>Signal detection theory</p> Signup and view all the answers

    What does the amplitude of a wave refer to?

    <p>Distance from the center line to the crest or trough</p> Signup and view all the answers

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

    <p>Cornea</p> 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?

    <p>Sensorineural hearing loss</p> Signup and view all the answers

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

    <p>Cochlear implant</p> Signup and view all the answers

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

    <p>Ménière's disease</p> Signup and view all the answers

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

    <p>Proprioception</p> Signup and view all the answers

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

    <p>Continuity</p> 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?

    <p>Transduction</p> Signup and view all the answers

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

    <p>Inflammatory pain</p> Signup and view all the answers

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

    <p>Similarity</p> Signup and view all the answers

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

    <p>Cones</p> Signup and view all the answers

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

    <p>Trichromatic theory</p> Signup and view all the answers

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

    <p>Afterimage</p> Signup and view all the answers

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

    <p>Binocular cues</p> Signup and view all the answers

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

    <p>Frequency is coded by the activity level of a sensory neuron</p> Signup and view all the answers

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

    <p>Place theory</p> 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?

    <p>Interaural level difference</p> Signup and view all the answers

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

    <p>The convergence of parallel lines</p> 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.

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