In Hobson's updated view, dreaming may be a state of protoconsciousness: the mind constructs an internal virtual reality that may help a person during wakefulness.

Dreaming as a State of Protoconsciousness

Activation-synthesis theory of dreaming is Alan Hobson's account in which dreams arise as the brain tries to synthesize neural activation occurring during REM sleep. Early forms of the theory contrasted with meaning-centered views of dreams by treating dreams as the brain's effort to make sense of REM-related activity rather than as representations of psychological angst.

New Mexico Highlands University

Google

New York University

Potential explanations for the content of dreams include:

- Psychoanalysis
- Activation-synthesis theory
- A reflection of waking thoughts
- Collective unconscious

Potential Explanations for the Content of Dreams

REM sleep is a phase of sleep distinguished by the rapid movement of the eyes. Brain wave activity during this stage closely resembles that of an awake person, and it is the period when most dreaming takes place. A key feature of REM sleep is the paralysis of the body's voluntary muscle systems, although muscles essential for circulation and respiration remain active. This combination of high brain activity and lack of muscle tone is why REM sleep is often called 'paradoxical sleep'. Additionally, this sleep stage is understood to be involved in processes of learning and memory.

Rapid Eye Movement (REM) Sleep

Alan Hobson is a neuroscientist known for developing the activation-synthesis theory of dreaming. His work provides a neurobiological explanation for dreams, suggesting they are the result of the brain interpreting its own internal electrical activity during REM sleep.

Alan Hobson

Spielman, R. M., Jenkins, W. J., & Lovett, M. D. (2020, April 22). Psychology (2nd ed.). OpenStax. https://openstax.org/books/psychology-2e/pages/1-introduction

OpenStax Psychology (2nd ed.) Textbook

According to Sigmund Freud's psychoanalytic theory, dreams offer a gateway to the unconscious mind. He proposed that by analyzing dreams, individuals could enhance their self-awareness and uncover valuable insights, which could then be used to address problems in their waking lives.

Psychoanalysis: Dream Analysis

Carl Jung was a Swiss psychiatrist and an early protégé of Sigmund Freud. He eventually separated from Freud due to major theoretical differences and went on to develop his own theory, known as analytical psychology. His key disagreements involved rejecting sexual drive as the primary human motivator and expanding on Freud's concept of the unconscious mind.

Carl Jung

Carl Jung, a 20th-century Swiss psychiatrist, proposed that dreams serve as a channel to the collective unconscious. He theorized that the collective unconscious is a universal repository of shared information and experiences. Within this framework, symbols appearing in dreams are not unique to the individual but are reflections of universal archetypes, carrying meanings that are consistent across different cultures and locations.

Jung's Theory of Dreams and the Collective Unconscious

Rosalind Cartwright is a sleep and dreaming researcher known for her theory that dreams are a reflection of significant life events and waking thoughts. Her ideas are notable for having empirical support, distinguishing them from earlier psychoanalytic theories of dreaming.

Rosalind Cartwright

Proposed by researcher Rosalind Cartwright, this theory suggests that dreams are a direct reflection of life events and thoughts that are significant to the dreamer. In contrast to psychoanalytic interpretations, Cartwright's ideas have received empirical support. For example, one study demonstrated a significant positive correlation between the frequency with which women thought about their former spouses while awake and the number of times the ex-spouses appeared in their dreams.

Cartwright's Theory of Dreams as Reflections of Waking Life

Activation-Synthesis Theory of Dreaming

A college student is feeling overwhelmed by an upcoming final exam. The night before the test, they have a vivid dream of effortlessly flying over their campus. Analyze this dream from TWO different theoretical viewpoints: first, from the perspective that dreams are a reflection of waking thoughts and concerns, and second, from the perspective that dreams are the brain's attempt to make sense of its own random neural activity during sleep. How would each perspective explain the content and feeling of the dream? Be sure to contrast the core assumptions of these two approaches.

Analysis of a Dream Scenario

Excitatory glutamatergic neurons inhibit REMS and promote NREMS. Theses neurons shared a common developmental origin with neurons promoting wakefulness. They also identified inhibitory y-aminobutyric acid-releasing neurons act downstream to inhibit REM sleep. 

Mechanism in switching between REM and non-REM at cellular level

- Research has been suggested that REM sleep assists memory consolidation
- Several studies using different stimuli (particularly those with emotional significance) show that REM assists the consolidation of memories with a lot of emotion
 - REM sleep also helps with early gene activity related to plasticity, allowing synapses to strengthen

REM Sleep and Memory Consolidation

Sleep studies found abnormalities in the rapid eye movement (REM) stage of sleep among people who suffer from persistent depressive disorder in comparison with people who do not. These abnormalities include: 
* Longer time spent in the rapid eye movement (REM) sleep stage.
* Taking less time to start the rapid eye movement (REM) sleep stage.
* Having more rapid eye movement (REM) sleep stages during the night.


Sleep Studies on Persistent Depressive Disorder

REM rebound is the phenomenon where an individual, after being specifically deprived of REM sleep, will spend a significantly longer duration in the REM stage during subsequent undisturbed sleep periods. This compensatory increase in REM sleep suggests an effort to recover the lost time in this particular sleep stage.

REM Rebound

A defining characteristic of REM sleep is the temporary paralysis of the body's voluntary muscle systems. This condition does not impact the involuntary muscles required for vital functions like breathing and blood circulation.

Muscle Paralysis During REM Sleep

A polysomnograph, as shown in Chart A, can be used to identify REM sleep by highlighting the period of rapid eye movements. Comparative charts of brainwave activity, like Chart B, further illustrate that the wave pattern during REM sleep is remarkably similar to the pattern observed when an individual is awake.

Visual Representation of REM Sleep Brainwaves

Analyze the following scenario and identify the most likely stage of sleep involved, explaining your reasoning based on the characteristics of that stage.

Sleep Stage Analysis

A sleep study participant's brain wave recordings show high-frequency, low-amplitude waves, very similar to those of someone who is awake and alert. Simultaneously, monitoring of their muscle activity shows a near-complete lack of tone in their voluntary muscles. Which statement best analyzes this physiological state?

Learn Before

Related

Learn After