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Confuse your Depth Perception
BlazerDate: Saturday, 2011-07-02, 8:25 PM | Message # 1
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Depth perception is the visual ability to perceive the world in three dimensions (3D). Looking at a sight that you have not seen before or entering into a 3d cinema with one eyes closed will alter the way your mind perceives things.

Count the black dots between the square below.

It’s an impossible task. Each time you move your eyes and focus, you see that the dots in the center of your receptive field are all actually white. The surrounding ones just appear to be black.

So why do you see black dots? The visual system processes edges of objects so they are enhanced. Seeing edges is very important for the brain’s ability to understand and define an image. This sometimes leads to visual “artifacts” away from the center of the receptive field, such as the black dots in the Hermann grid.

Which monster is larger?

To most people, the one in the background seems larger, though in fact they are exactly the same size. But the depth cues in the picture (the receding tunnel) gives the 2D image a 3D feel. Although both monsters create the same size image in our eyes, our brains take the depth cues into account, which results in a perception of the upper monster as further away—making it seem larger.

Scrambled Text

Many people are surprised they can read it without much problem, even though the letters are not in the correct order. (If you had trouble, see Answer 1 below.) But is what it says about reading true?

Not really. As Matt Davis of the MRC Cognition and Brain Sciences Unit at Cambridge University says, “There are elements of truth in this, but also some things which scientists studying the psychology of language know to be incorrect.” He’s unaware of any research at Cambridge that suggests otherwise.

Davis points out that the way the words were rearranged in the passage above makes them fairly easy to read. Here are alternate word scrambles from the text:

Why are the passage versions easier to read? It seems that when we read, we extract a lot of information from the context—so understanding several words in a sentence can help us guess another one. We also scan words and pick out markers that make them easy to identify, such as certain letter combinations and sounds. These elements make it easier to infer the word even when the letters are not in perfect order. You might note that in the passage above, many of these markers were maintained. For example, in “according” (aoccdrnig), the double c was maintained. Splitting them up (aricdocng) makes the word harder to read. In Cambridge (Cmabrigde) the second half of the word, “bridge,” was very nearly maintained. Changing the scramble to break up “bridge,” as in Cgmiadrbe, makes it much harder to read.

So the following passage should be harder to read:

Message edited by Blazer - Saturday, 2011-07-02, 8:37 PM
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AnimorphDate: Saturday, 2011-07-02, 10:20 PM | Message # 2
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Aah the second picture moves xD
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