News tagged with distortions
Distortion
A distortion is the alteration of the original shape (or other characteristic) of an object, image, sound, waveform or other form of information or representation. Distortion is usually unwanted, and often many methods are employed to minimize it in practice. In some fields, however, distortion may be desirable; such is the case with electric guitar distortion.
The addition of noise or other extraneous signals (hum, interference) is not considered to be distortion, though the effects of quantization distortion are sometimes considered noise. A quality measure that explicitly reflects both the noise and the distortion is the Signal-to-noise-and-distortion (SINAD) ratio.
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Ear-witness precision: Congenitally blind people have more accurate memories, research finds
(Medical Xpress)—Researchers from the University of Bath have found that people who are congenitally blind have more accurate memories than those who are sighted.
Psychology & Psychiatry
Apr 29, 2013 |
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Trust makes you delusional and that's not all bad
Trust fools you into remembering that your partner was more considerate and less hurtful than he or she actually was.
Psychology & Psychiatry
Feb 27, 2013 |
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How your eyes deceive you
(Medical Xpress) -- Researchers at the University of Sydney have thrown new light on the tricks the brain plays as it struggles to make sense of the visual and other sensory signals it constantly receives.
Neuroscience
Apr 24, 2012 |
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Experts challenge FDA over approval for new dose of Alzheimer's drug
Approval for a new dose of a best-selling Alzheimer's drug "breached the FDA's own regulatory standard" and has led to "incomplete and distorted messages" about the drug, warn experts in the British Medical Journal today. ...
Alzheimer's disease & dementia
Mar 22, 2012 |
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Your brain on 'shrooms: fMRI elucidates neural correlates of psilocybin psychedelic state
(Medical Xpress) -- Psychedelic substances have long been used for healing, ceremonial, or mind-altering subjective experiences due to compounds that, when ingested or inhaled, generate hallucinations, perceptual ...
Neuroscience
Feb 29, 2012 |
4.9 / 5 (43) |
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Seeing isn't believing
Pay attention! It's a universal warning, which implies that keeping close watch helps us perceive the world more accurately. But a new study by Yale University cognitive psychologists Brandon Liverence and Brian Scholl finds ...
Psychology & Psychiatry
Sep 07, 2011 |
4.1 / 5 (10) |
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Tinted specs offer real migraine relief, says fMRI study
Precision tinted lenses have been used widely to reduce visual perceptual distortions in poor readers, and are increasingly used for migraine sufferers, but until now the science behind these effects has been unclear. Now ...
Neuroscience
May 26, 2011 |
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