Approximately how many separate areas of the brain are involved in vision?

Question

Approximately how many separate areas of the brain are involved in vision?

Answer 1

There is 8 areas of the brain involved in vision.

The Cerebellum

The Frontal Lobe

The Hippocampus

The Hypothalamus

The Parietal Lobe

The Pineal Gland

The Superior Colliculus

Association Cortex

Answer 2

Many areas of the brain are involved in vision.  It is very unlikely that one part of the brain will work alone and not in concert with other areas.  There is definitely not one "good" answer to this.  Anyone who would say there is one exact number to your answer would be largely mistaken.

Here are just a few areas involved in vision:

Occipital Lobe

Frontal Lobe

Hippocampus

Thalamus (specifically, the lateral geniculate nucleus)

Optic Radiations (includes optic nerve)

Corpus Callosum

Cerebellum (Vestibulocerebellum)

Midbrain (mesencephalon)

So, if I had to answer an exact number, I would say around 8-10.  However, about 80% of our brain is devoted to vision at any given time, so it could be many more, depending on what you arbitrarily define as a "separate area of the brain".