Visual acuity at and beyond fixation point

Original - This picture shows the acuity of foveal vision in reading (during one eye stop). The lower line of text simulates the acuity of vision with the relative acuity percentages. To do a test close one eye, fixate the upper line at the fixation point and try to read the words to the right and left without moving your eyes. The result should be similar to the incrementally blurred lower line of text - except that you never have the impression of a blurred text. The reason: Your visual perception is already the result of a massive computational analysis made by your brain. Your system "knows" that the upper line is not blurred, so you don't see it as blurred. But the difficulty of recognition increases with the distance from the fixation point.
Reason
This diagram provides a demonstration of the fact that your eyes must move rapidly during reading since you can only read a word or two at each eye stop. The upper line allows a reader try it out for him/herself, and the lower line is a good representation of the loss of acuity over distance.

I came across this image about a month ago, and upon seeing that there is such a thing as valued images, I remembered this picture. I cannot think of another image I have encountered on Wikipedia that contributes as much to its article as this one does to eye movement in language reading. I thought of nominating that article as a GA, but then realized that the article could use a bit of work; its this picture that makes the article seem so good.
Articles this image appears in
Eye movement in language reading , Reading (process)
Creator
Hans-Werner34

Promoted File:EyeFixationsReading.gif --wadester16 16:43, 13 June 2009 (UTC)

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