Right Before My Very Eyes :: Vision Brain Seeing essays

Right Before My Very Eyes "I'll believe it when I see it:" is one of many common catch phrases included in our every day vernacular. A person who declares this is asserting that they will not be fooled by another's assumptions or perceptions of the world. This understanding raises a great sense of security within us, concerning the things that we do see, and inversely, an unavoidable sense of insecurity in those beliefs that are not supported by vision. Do you believe in Ghosts? Angels? Out of body experiences? Would you believe if you could see them? Maybe not. But it is possible to offer those who are withholding there stamp of approval on things that exist but cannot be seen, a better summary of evidence, which could make the inability to see something an invalid criteria for belief. Could a summary of evidence be compiled that would support this: Our vision is incomplete, incorrect, and can even be as misleading as to create something within the brain that does not exist at all, shedding light on a b rain that is more of a visionary, and less of a reporter. Human beings rarely contemplate the significance of their own blind spot, a place where processes of neurons join together and form the optic nerve; it is here that the brain receives no input from the eye about this particular part of the world. What I discovered while entertaining myself with a simple eye exam aimed at divulging the capabilities of the brain in the face of the eyes blind spots was fundamental in my exploration of the trust we place in vision, and so I will explain it briefly. Our brain can ignore a dot that exists on the page and "fill" the spot with the color of its surroundings, no matter what the color. However, it is not that our brain cannot conceive of an image or of a shape to fill this place. Continuing with the experiment leads you to find that the brain will continue the line that is obstructed with the black dot, covering the sides of the dot in the surrounding color, and transforming the image before you into a line within your brain. A line that i s absolutely not there. This reveals more than just a weakness in the eye, but an ability of the brain! (1)