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Sarah Harding's picture

Wider than your retina

It was "revealed" to us last class that the picture in our heads is larger than the picture on our retinas... Shouldn't we have already known that? Our eyes are so small, and our brains are supposedly "wider than the sky," so it shouldn't be difficult for us to comprehend that the retina picture is smaller. However, it's uncomfortable to know that picture transmission from retina to brain is done completely without the I-function. Other students have brought up the issue of reality on this blog. If our percieved vision is transposed without our knowledge, then our perception of reality could be skewed without our realization. Perhaps we are seeing the world through rose-colored lenses...or something of the sort. The scientific explanation is that our eyes are always moving, and the brain pieces together the small images from the retina. While I'm walking around, however, I don't feel my eyes rapidly scanning, or my brain piecing together myriad images. This is done so quickly, and without consciousness. That's incredible. On the contrary, it's frightening to continually realize the actions that are perfomed without conscious effort. I don't necessarily believe that what we are seeing isn't reality. To us, at least, it is reality....and that's really all that we need to know. However, I do think it's interesting that we could all be percieving the world differently. If one person's eyes don't move as rapidy as another persons, is their vision imperfect? Is it perhaps less sharp, less detailed, missing pieces, etc...? How fascinating the topic of vision is....

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