Perception distortion

To sum up Tho common stereoscope and pictures make objects look very near, very small, and distorted. The lenticular stereoscope, represented in Fig. 417, makes them look of their true size, at their true. dis-. tancc, and without perceptible distortion.,... 

These outrage factors arc not distortions in the public s perception of risk. They are inborn parts of what is interpreted as risk. They are explanations of why the public fears pollutants in the air and water more tlum tliey do geological radon. The problem is that many risk experts resist tlie use of the public s "irrational fear" in their risk management. 

Psychoses. Major thought disorders involving distorted perception and hallucinations. 

The effect of LSD on perception is sometimes referred to as illusiogen-ic, because, rather than creating a perception of a nonexisting stimulus, LSD produces a distortion of sensory input from the environment (Kulberg 1986). Visual symptoms are most frequently experienced for example, vision may be blurred, and the perception of distance and depth may be changed. Objects in the surroundings may be perceived as unusually intense in color, shape, and/or size. With the eyes closed, geometric and kaleidoscopic patterns are perceived. Synesthesia, by which a sensory stimulus of one modality is transformed into a perception from another sense, is a type of a perceptual distortion typically experienced under the influence of LSD for example, smells... 

Habraken, C. L. (1996). Perceptions of chemistry Why is the common perception of chemistry, the most visual of sciences, so distorted Journal of Science Education and Technology, 5(3), 193-201. 

Modulation of DNA structure and dynamics is also possible using base-pair mismatches. Mismatches exert little influence on the global structure of B-DNA duplexes. Locally, the extent of base stacking perturbation depends sensitively on the nature of the mismatch [139-141]. Therefore, while a CA mismatch introduces a significant distortion in local stacking, the well-stacked GA mismatch is, by many criteria, barely perceptible. The dynamics of mismatched base-pairs may also be significantly distinct from matched Watson-Crick base pairs [9]. We exploit these features of DNA mismatches to probe the sensitivity of DNA-mediated CT to base structure and dynamics. 

Drug myopia. Drug-induced distortion of a person s perceptions of reality such that the person is blinded to what is happening around him or her. 

Because Ecstasy can produce mild hallucinations, it is often referred to as a psychedelic drug having effects similar to those of LSD. Unlike other psychedelic drugs, however, Ecstasy does not produce vivid perceptual and visual distortions, like walls and ceilings turning into liquid. Rather, the perception of colors, sound, music, and touch appears to be intensified by Ecstasy. In addition, the perception of time may be slowed or otherwise altered. 

Yet another technique has been to interview children or adults (such as teachers, Sch fer Smith, 1996) directly, either using questionnaires (Smith et al., 1992), or interviews (Boulton, 1992a). Clearly, people s answers may not be accurate in terms of what we observe, but this method should inform us about what they think and perceive. This has it s own intrinsic interest, and also interest in terms of discrepancies between beliefs and behaviour. In the case of older children, especially adolescents, we may get uniquely useful insights, while bearing in mind the possible distortions due to selective perception and memory, limited insight to motivation, and social desirability in responses, that bear on verbal report data (Boulton, 1992a). 

Clouding of the sensorium 2) Disorientation 3) Loss of time-space relationships 4) Distortion of perception with illusions and hallucinations 5) Confusion 6) Coma. 

Symptoms of exposure Hallucination, distorted perception, euphoria, somnolence, nausea, vomiting, and headache. Narcotic at air concentrations of 200 ppm. At higher concentrations, convulsions may occur. Eye, nose, and respiratory irritant (Patnaik, 1992). An irritation concentration of 9,000.00 mg/m in air was reported by Ruth (1986). 

Symptoms of exposure An asphyxiant. Inhalation may cause hallucinations, distorted perception, and eye, nose, and throat irritation. At high concentrations drowsiness, lightheadedness, and narcosis may occur (Patnaik, 1992). Contact of liquid with skin may result in frostbite (NIOSH, 1997). 

Symptoms of exposure May cause headache, dizziness, excitement, euphoria, hallucination, distorted perceptions, and confusion. Narcotic at high concentrations (Patnaik, 1992). 

Psychotomimetics are able to elicit psychic changes like those manifested in the course of a psychosis, such as illusionary distortion of perception and hallucinations. This experience may be of dreamlike character its emotional or intellectual transposition appears inadequate to the outsider. 

The distance between the two terminal carbon atoms at the TS (central point on the IRC segment) is already 2.291 A, which results in very perceptible changes in the orbital shapes, spin-coupling pattern and overlaps between neighbouring orbitals. Orbital /i (see the central column of orbitals in Fig. 5) becomes less distorted towards the orbital at the other terminal carbon, /g, and this is reflected in a decrease in their overlap (see Fig. 7). Orbitals /2 and /3 (and their symmetry-related counterparts, /5 and /4) attain shapes which are very similar to those of /2 from the TS of the Diels-Alder reaction (see the central column of orbitals in Fig. 1) and of a SC orbital for benzene [8-10]. These changes are accompanied by a tendency towards equalization of the nearest-... 

Hallucinogens LSD (lysergide) Psilocybin, psilocin DMT, mescaline DOM, STP + Distortion of perception, mood, and thought -H-M- Neurotoxicity Flashbacks Toxic psychosis... 

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