Why do we see images upright and the same size?

Question

although the images formed on the retina are upside down and diminished.

Answer 1

Brain is one great piece of software. Retina provides the inputs as you mentioned

1. upside down
2. diminished
3. also two images (left and right)
4. also each of those images have a black patch (invisible) at the center.

The brain does the following
1. tells u the image to be upside.
2. maginifies it for u.
3. it stiches two (2-d images) and creates a 3-d image (basically telling you about the depth)
4. it generates images for the blacked out centers.

Unbelievable but true........

Answer 2

Becasue our brains have learned how to correct for this. There have actually been experiments done in which the experimental subject was fitted with 'glasses' that caused them to see everything 'upside down. Believe it or not, after a couple of months of 'stumbling around' the brain actually began to sort things out and the individual could function normally again (even drive a car, etc.)

When the glasses were removed, it took them a few days to get 're-oriented' again, but no permanent damage was noted.

The human animal is amazaingly adaptable ☺


Doug

Answer 3

Actually, we are all upside-down

Answer 4

If you are seeing something else, do let me know. I know a good opthalmologist who is desperately searching for patients.