BLIND SPOT

We have talked about the blind spot in class. The blind spot is where the optic nerves exits the eye and goes to our brain (occipital lobe - visual cortex). As a result, an image falling in that region will not be seen by us...think of it like the blind spot of a driver (even though you all ride the Metro or the Jitney). :)

Let's see if we can find your blind spot: CLASS ACTIVITIES



For this image, close your right eye. With your left eye, look at the red circle. Slowly move your head closer to the image. At a certain distance, the blue line will not look broken!! This is because your brain is "filling in" the missing information.




This next image allows you to see another way your brain fills in the blind spot. Again, close your right eye. With your left eye, look at the +. Slowly move your head closer to the image. The space in the middle of the vertical lines will disappear.


Here is another image to show your blind spot. Close your right eye. With your left eye, look at the +. You should see the red dot in your peripheral vision. Keep looking at the + with your left eye. The red dot will move from the left to the right and disappear and reappear as the dot moves into and out of your blind spot.