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Dream interpretation refers to a collection of "therapies" or methods by which a person's dreams are supposedly interpreted.
Dreams have long held a special place in religion, mysticism, and pseudoscience. Since ancient times, dreams have regularly been interpreted as communication between humans and the divine, messages from the great beyond or spirits still walking the Earth, and prophecies. The ancient Greeks believed that the gods could speak to mortals through dreams. Sleeping and dreaming in temples dedicated to the god of medicine and healing, Asclepius, was thought to be able to cure illness. (The temples were called Asclepeions and the process known as "incubating.") Aristotle was the first person known to dismiss claims of predictions made in dreams as coincidences. Similar ideas about dreaming have been documented as well in ancient Egypt, China, and the Middle East. The Chinese also believed that the soul literally left the body during sleep. The Bible famously contains a failed prophecy involving the interpretation of Babylonian King Nebuchadnezzar's dream. Dreams are also central to Zoroastrian beliefs.
Native Americans strongly believed in the dream world. They considered dreams as alternate realities giving them much value in their lives. They applied the information learned about medicine and rituals from their dreams in their awake lives.
 Freud and Jung
Dream interpretation played a large role in Sigmund Freud's writings on psychological therapy. Freud believed that dreams were a form of wish fulfillment which contained both "manifest" and "latent" content. The manifest content was the literal portion of the dream, which consisted of various coded symbols that represented the latent content. The latent content was the true desire or emotion that was being repressed and kept in the unconscious mind. Freud initially called this act of repression "the censor" in his book The Interpretation of Dreams, but later referred to the censor as the work of the ego and super-ego after he developed his three-part system of consciousness. He believed nightmares were the product of the censor repressing this wish fulfillment. For this reason, Freud made heavy use of dream interpretation in his psychoanalytic therapy.
Carl Jung grafted his own ideas onto Freud's, modifying them to fit into his concept of archetypes. Jung believed that dreams were not simply wish fulfillment, but the expression of a person's archetype and shadow forms (these are similar to Platonic ideals). He also believed that the "collective unconscious," or humanity's collective memory, could be accessed through dreams. He renamed manifest and latent content to "objective" and "subjective," respectively.
Calvin Hall developed a "cognitive" theory of dreaming in the 1950s. However, his work is based on Freud and Jung, viewing dreams as similarly having symbols that must be decoded in some way to be understood and this idea is not currently accepted within cognitive psychology.
The big problem with Freudian ideas and their derivatives about dream interpretation is that they lack the ability to be falsified or replicated (much like the rest of Freudian psychoanalysis). Freud and his followers based their work on specialized case studies and a good amount of theorizing.
 Activation-synthesis hypothesis
The activation-synthesis hypothesis was first put forth by J. Allan Hobson and Robert McCarley in 1977. This hypothesis claims that dreams are essentially interpretations of neuronal activity in the brainstem (specifically the pons) during rapid-eye movement (REM) sleep, and thus they are largely a meaningless jumble of fake sensory experiences. Mark Solms has claimed that, based on his own research, REM sleep is not necessary for dreaming and that the forebrain does play a large role in dreaming, lending credibility to the notion that there is some deeper meaning in dreams. The Hobson-Solms debate has spanned over multiple decades and still rages on today.
 Threat simulation theory
The threat simulation theory (TST) proposed by Antti Revonsuo attempted to take an evolutionary approach to dreams. Revonsuo has postulated that dreaming served an adaptive purpose in allowing humans to "simulate" predatory threats during their sleep and practice escaping them. Mark Solms has also criticized TST as threat-related dreams make up only a fraction of total dreams and because TST lacks explanatory and predictive value in a number of other areas.
 This is your brain on drugs
Another hypothesis is that dreaming is caused by the release of dimethyltryptamine (DMT), a highly potent (and highly illegal) hallucinogen, in the brain. DMT is known for being a recreational drug, though it does occur naturally in small amounts in the human body and it is hypothesized that is formed in the pineal gland. Research in this area, though, has only been preliminary thus far.
 Difficulties with dream research
There are a number of apparent difficulties in conducting research on dreams that have led to a lack of consensus and mountains of contradictory research in the field. Dreams are quickly and easily forgotten (which is why the use of dream logs is common) and memories of dreams may be created from nothing through the process of confabulation. It is also difficult to generate hypotheses that are falsifiable, testable, and able to be replicated due to the limited ability to observe dreaming under controlled conditions. It's likely that more powerful and accurate brain scanning technology will be required before a consensus can begin to develop on the nature of dreams. There are numerous other hypotheses than the ones mentioned here with their own relevant bodies of supportive and critical research.
 Woo and quackery
As has been true throughout history, massive amounts of woo surrounds dreams. Dream interpretation as used in therapy ranges from your run-of-the-mill quackery in which therapists claim that dream interpretation is based on "scientifically sound evidence" and attempt to use it in their therapy sessions, to the even more quacky amalgams of dream interpretation and hypnotherapy, and the really out there woo of things like using dream interpretation in past life regression therapy.
You can also go down to your local bookstore and find various "dream dictionaries" for sale claiming to be a reference guide for symbols in dreams so that you can perform dream interpretation on yourself. The fact that the meanings of the symbols can vary wildly from book to book demonstrates the quality and accuracy of these dictionaries.
 See also
- ↑ Asklepieion at Epidaurus, Greek Ministry of Culture
- ↑ Dream History, Think Quest
- ↑ Dreams in History, Dream Moods
- ↑ History of Dreams, World Of Dream Symbols
- ↑ The Interpretation of Dreams (Third Ed.) by Sigmund Freud
- ↑ Dream interpretations, Carl-Jung.net
- ↑ Hall, C. S. (1953).A cognitive theory of dreams. The Journal of General Psychology, 49, 273-282. Abridged version in M. F. DeMartino (Ed.). (1959). Dreams and Personality Dynamics (pp. 123-134). Springfield, IL: Charles C. Thomas.
- ↑ Domhoff, G. W. (2005).Refocusing the neurocognitive approach to dreams: A critique of the Hobson versus Solms debate. Dreaming, 15, 3-20.
- ↑ Valli, Katja, Antti Revonsuo, Outi Palkas, et al. The threat simulation theory of the evolutionary function of dreaming : Evidence from dreams of traumatized children. Consciousness and cognition. 2005, vol. 14, no 1 (232 p.) [Document : 31 p.] (2 p.1/4), pp. 188-218
- ↑ Malcolm-Smith, Susan, Mark Solms, Oliver Turnbull, and Colin Tredoux.Threat in dreams: An adaptation? Consciousness and Cognition 17 (2008) 1281–129
- ↑ Callaway, JC. A proposed mechanism for the visions of dream sleep. Medical Hypotheses Volume 26, Issue 2, June 1988, Pages 119-124.