1 / 23

States of Consciousness

Delve into an organism's awareness spectrum, from unconscious mind to high-level, exploring altered states like dreaming, meditation, and hypnosis. Discover the significance of sleep cycles, arousal states, and circadian rhythms in maintaining optimal mental health.

hawkinss
Download Presentation

States of Consciousness

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. States of Consciousness Consciousness an organism’s awareness of its own self and surroundings; exists along a continuum, ranging from high level awareness to unconsciousness

  2. High Level of Awareness Controlled Processes focused Attention is required

  3. Middle Level of Awareness Automatic Processes awareness but minimal attention Daydreaming low level of awareness and conscious effort; somewhere between active consciousness and dreaming while asleep

  4. Minimal or No Awareness Unconscious Mind reservoir of unacceptable thoughts, feelings, and memories that are too painful or anxiety provoking to be admitted to consciousness Unconscious lowest level of awareness

  5. Altered States of Consciousness • a mental state other than ordinary waking consciousness, • found during: • physical activity • meditation and spirituality • psychoactive drug use • hypnosis • dreaming • sleep

  6. Physical Activity Young children love to alter their consciousness Is this a natural phenomena?

  7. Meditation and Spirituality Meditation: a group of techniques designed to focus attention and produce an heightened state of awareness

  8. Psychoactive Substances Many different types of psychoactive substances can alter your awareness depressants stimulants opiates hallucinogens

  9. Hypnosis Is one or more of the following: narrowed, highly focused attention increased imagination passive, receptive attitude decreased pain heightened suggestibility

  10. Dreaming and Dream Theories Percentages: REM sleep: 70-80% NREM sleep: 20-30% Theories: Freudian Activation Synthesis

  11. Sleep • The most widely studied Altered State of Consciousness • We spend 1/3 of our lives asleep • Sleep or Arousal States fall into three categories: • Waking • NREM sleep • REM sleep • It is still unclear just why we sleep

  12. Sleep Recording • EEG • EMG • EOG • EKG • Respiration

  13. Arousal States • Waking • NREM • Stage 1 • Stage 2 • Stage 3 • Stage 4 • REM Delta or Slow Waves

  14. Arousal State Characteristics • Waking: • low voltage, high frequency EEG patterns • very high EMG activity • NREM Sleep: • high voltage, low frequency mixed EEG patterns • slowed heart rate and respiration • reduced EMG activity • REM Sleep: • low voltage, high frequency EEG patterns • rapid eye movements • variable heart rate and respiration • muscle atonia • penile erection/vaginal secretions

  15. The Sleep Cycle in Young Adults • more SWS at the beginning of the beginning of the night • more REM at the end of the night • cycle goes from NREM 1-4 then back out from NREM 4-1

  16. All Mammals Show Similar Sleep Characteristics

  17. Unihemispheric Sleep in Marine Mammals One hemisphere asleep, one awake

  18. Sleep across the Lifespan

  19. Multiple Sleep Latency Test (MSLT) Measures Sleep Deprivation

  20. EEG SWA Increases After Sleep Deprivation

  21. Circadian Rhythms Rasterplot Light/Dark Cycle Constant Conditions Tau: natural rhythm Zeitgeber: Light Pulse Entrainment

  22. The SCN and Circadian Rhythms

  23. Two Process Model of Sleep

More Related