Altered StatesThe Light Show Within
"Normal memories, the 'perceptual release' theory [formulated by Hughlings Jackson in 1931] assumes, are suppressed by the flow of sense information from the outside world. New information inhibits the emergence and awareness of previously processed information. If the new input is decreased or impaired while awareness remains, stored images may be released and experienced as hallucinations or dreams."
"The daylight (sensory input) is reduced while the interior illumination (the general level of arousal of the central nervous system) remains bright, so that images originating within the rooms of the brain may be perceived as though they came from outside the windows of the senses."
"Numerous studies in sensory deprivation show that once a well-reinforced thinking process which dominates in everyday life stops, the mind is overwhelmed by a flood of non-ordinary imagery. In one study conducted at McGill University in Montreal by psychologist Donald Hebb, student volunteers experienced what we call childish emotional responses and hallucinations after twenty-four hours."
"From real studies on suggestibility in sensory deprivation conditions, Vernon found that suggestibility in all ways could be increased after two to three days and become four times greater than before. But he also found that it was lost no longer than two days after the experimental conditions were terminated, if gains were not consolidated thereafter.
"If this is the case, then the 'importance' of any given sets of neural events may be greatly enhanced. Said more simply, under the conditions of sensory deprivation, the human may be able to content himself with ideas or cognitions that he would otherwise simply dismiss."
(2) Hallucinogens
Analogous to the perceptual-release theory of hallucinations, "the daylight (sensory input) is reduced while the interior illumination (the general level of arousal of the central nervous system) remains bright, so that images orginating within the rooms of the brain may be perceived as though they came from outside the windows of the senses."
"Hallucinogens produced vivid descriptions. First, organized geometric patterns appeared. Slowly they took on blue tints and began pulsating. Thirty minutes into the voyage, lattice and tunnel forms increased significantly, along with some kaleidoscopes. When nearly two hours had passed, colors shifted to red, orange and yellow. Explosive, rotating lattice tunnels predominated, overlaid by complex images drawn from the subject's life. The scenes and forms all danced together around a bright light in the center of the image."
Form Constants (produced by hallucinogens)
(3) NDE's (Near Death Experiences)
"Although 'death' narratives do not always follow an identical sequence of events, many of the described phenomena are consistent with details from abductions. Similarities include: (1) a bright light; (2) a humming (musical or annoying); (3) a sense of 'floating' out of body; (4) moving through a 'tunnel' or 'tube'; (5) approaching a 'door' or border of some sort; (6) encounter a 'being of light'; (7) telepathic communication with the 'being'; (8) a rapid review 'as on a TV screen' of events in the witnesses life; (9) a kind of 'moral examination' (roughly akin to the abductee's physical exam) which involves past deeds; (10) a moral 'message' of some kind; (11) a 'return'; (12) an aftermath in which the witness experiences varying degrees of personality change."
NDE's may also involve bodily dismemberment such as that experienced in shamanistic trances.
"The bright light is characteristic of many types of metal imagery; it is due to stimulation of the central nervous system that mimics the effects of light on the retina. It can also occur when the electrical activity in the brain is altered in such a way that the threshold for perception of phosphenes (electrical activity in the visual system) is lowered and bright lights are seen in otherwise dark surroundings. This point of light creates a tunnel perspective and individuals will report viewing much of their imagery in this regard."
Temporal Lobe Transients"...The brain can discriminate and respond to different kinds of very subtle, external magnetic fields, without the individual necessarily being aware of it, except through their imagery."
"There is little doubt that the class of experiences that comprise mystical experiences in general, and NDE's in particular, is strongly correlated with temporal lobe activity....Kate Makarec and I have found that all of the major components of the NDE [near death experience], including out-of-body experiences, floating, being pulled towards a light, hearing strange music, and profound meaningful experiences can occur in experimental settings during minimal electrical current induction to the temporal region due to exogenous spike-and-wave magnetic field sources."
"The personalities of normal people who display enhanced temporal lobe activity... usually display enhanced creativity, suggestibility, memory capactity and intuitive processing. Most of them experience a rich fantasy or subjective world that fosters their adaptability. These people have more frequent experiences of a sense of presence during which time 'an entity is felt and sometimes seen;' exotic beliefs rather than traditional religious concepts are endorsed."
Arnold Mandell at UC San Diego has identified the septo-hippocampal-amygdaloid circuit of the limbic system which can be sent into oscillation by feedback from drumming, sensory deprivation and drugs. The result is a state of temporal lobe epilepsy in which the individual experiences transcendent states (auras) and often feelings of possession or terror. Smells, such a brimstone or heavenly fragrances, are often involved indicating the involvement of the limbic system which is also known as the rhinocephalon or "smell brain". These events are often accompanied by feelings of intense meaningfulness or great portentousness.
"...Movement, odd visual experiences, the profoundness, the fact that it's true reality, the intense meaningfulness, the cosmic significance of it all, the desire to proselytize, to spread the word, the sense of the personal, as if one is particularly chosen- these are all classic temporal lobe signs."
The effect of electromagnetic fields on the temporal lobe have been used to explain some of the phenomena associated with close encounters with "UFOs".
According to Peter Fenwick, sensitives selected by the London Society for Psychical Research showed a high incidence of head traumas at some point in their lives. Michael Persinger has noted that the soft neural signs associated with mystical experience correlates with temporal lobe transients which "color" attitudes, beliefs and behaviors. Four percent of the population is "fantasy prone" according to Banber(?) and Wilson's scale. A study of a science fiction group showed a correlation between fantasy imagery, temporal lobe transients. and esoteric beliefs.
"The cerebellum is the source of sexual excitement and of orgasm. If man's evolution is the result of a conflict between the old and new brain, resulting in a degree of reconciliation, then is it not conceivable that glimpses of higher consciousness are the result of a momentary integration of the old and new brains?
"The transcendent state is characterized by 'resting-state alpha' and relatively high-amplitude, synchronous slow-wave activity in the median of the central cortex accompanied by regional (commonly temporal) gamma (30-hertz-plus) brain-wave activity."
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