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Satellite photograph of a mesa in the Cydonia region of Mars, often called the "Face on Mars" and cited as evidence of extraterrestrial habitation. Pareidolia (/ ˌ p ær ɪ ˈ d oʊ l i ə, ˌ p ɛər-/; [1] also US: / ˌ p ɛər aɪ-/) [2] is the tendency for perception to impose a meaningful interpretation on a nebulous stimulus, usually visual, so that one detects an object, pattern, or ...
In a dark room, blackness can be seen or the object can be more colourful. In either case, it is not a flat unchanging redness/blackness. Instead, if actively observed for a few minutes, one becomes aware of an apparent disorganized motion, a random field of lightness or darkness that overlays the redness or blackness of closed eyelids.
Instead of Newton's division of sunshine into seven rays, Schopenhauer claimed that color was a division of the eye's retina into two complementary parts. Like the Delphic Oracle , Copernicus , and Kant , Schopenhauer concentrated on the subjective rather than the objective, on the observer's experience rather than the observed object.
After living in darkness for most of his life, a North Carolina man can now see thanks to a bionic eye. 66-year-old Larry Hester lost his vision in his thirties after being diagnosed with ...
Homo erectus crossed into the New World instead of the ancestors of the Native Americans, leaving the Pleistocene biosphere intact at the time of the 17th century AD. Fire on the Mountain: Terry Bisson: John Brown succeeds in his raid on Harpers Ferry and touches off a slave rebellion in 1859. Gray Victory: Robert Skimin
The major problem in visual perception is that what people see is not simply a translation of retinal stimuli (i.e., the image on the retina), with the brain altering the basic information taken in. Thus people interested in perception have long struggled to explain what visual processing does to create what is actually seen.
Before the first known human cases, some tests were done rearing animals in darkness, to deny them vision for months or years, then discover what they see when given light. A. H. Reisen found severe behavioural losses in such experiments; but they might have been due to degeneration of the retina. [4]
Nyctalopia (/ ˌ n ɪ k t ə ˈ l oʊ p i ə /; from Ancient Greek νύκτ-(núkt-) 'night' ἀλαός (alaós) 'blind, invisible' and ὄψ (óps) 'eye'), [1] also called night-blindness, is a condition making it difficult or impossible to see in relatively low light. It is a symptom of several eye diseases.