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What is the Occipital Lobe?

Tricia Christensen
By
Updated Mar 03, 2024
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The statement that people have eyes in the back of their head may have a little truth to it. In the brain, the occipital lobe is located in the back of the head. It is actually two lobes, with a right and left side corresponding to right/left brain hemispheres. This area is responsible for controlling most vision and visual processing. Thus, while a person may not see out the back of his or her head, they see from it and this area of the brain interprets the images taken in by the eyes.

The occipital lobe is located behind the parietal lobe, and it sits on top of the membrane that separates it from the cerebellum, which is below it. As mentioned, its function tends to be most associated with vision. Not only does it allows us to see and identify objects, but it also does things like see colors and interpret that each color is different. Occipital function is involved early in life as infants begin to see. As children receive visual stimuli, it gets sent to this region and is ultimately interpreted. More acute vision and ability to understand images occurs as children grow.

The work of the occipital lobe not only helps with visual recognition but can also help understand and differentiate between shapes. Things like basic geometric understanding of shapes would be impossible without this brain area. The brain would lack the capacity to distinguish between objects like circle/square or triangle/pentagon. Moreover, trying to interpret an alphabet, could be challenging with this processing section, since differences in letters often come down to slight changes in shape.

It is certainly no surprise that damage, lesions, or any illness affecting the occipital lobe may be very severe and alter vision. One condition, called occipital lobe epilepsy originates in this part of the brain. It results in unusual seizures that are characterized by hallucinations, sometimes seeing an image again and again, and repeated blinking of the eyes or uncontrolled eye movements. While a seizure is progressing, blindness can occur and some people note exceptional eye pain as well. Though this condition may represent dysfunction of the occipital lobes, it can very fortunately respond to treatment with medication.

Others times occipital lobe damage is not as reparable and people with such damage could suffer frequent visual hallucinations or fail to interpret any visual information they take in. This could in turn lead to errors in perception, faults in vision or sometimes complete vision dysfunction. Temporary or permanent injuries to the back of the brain might suggest involvement of the occipital lobe if they result in vision changes or blindness.

TheHealthBoard is dedicated to providing accurate and trustworthy information. We carefully select reputable sources and employ a rigorous fact-checking process to maintain the highest standards. To learn more about our commitment to accuracy, read our editorial process.
Tricia Christensen
By Tricia Christensen , Writer
With a Literature degree from Sonoma State University and years of experience as a TheHealthBoard contributor, Tricia Christensen is based in Northern California and brings a wealth of knowledge and passion to her writing. Her wide-ranging interests include reading, writing, medicine, art, film, history, politics, ethics, and religion, all of which she incorporates into her informative articles. Tricia is currently working on her first novel.

Discussion Comments

By donna61 — On Feb 09, 2011

@PandaGolden--I have not personally taken Tegretol, but I do have a friend who is taking it for the same condition. The side effects that can be felt are dizziness, drowsiness and nausea. She also needs to get periodic blood tests to make sure her liver and kidneys are not being damaged.

She has also told me of an occipital lobe epilepsy diet (also called a ketogenic diet) that has shown great promise in helping to control, or in some cases completely stop the seizures.

This diet is high in healthy fats and low in carbohydrates. Your friend would definitely want to work with a dietitian if she decides to try this diet as it is very restrictive.

By PandaGolden — On Jan 25, 2011

Thanks for the information -- I was looking into information about the occipital lobe because a friend of mine's son was just diagnosed with occipital lobe epilepsy.

I read that the medication most frequently used to treat occipital lobe epilepsy is Tegretol, also called carbamazepine -- has anyone reading this actually taken Tegretol, could you tell me more about it? My friend is really hoping to keep the son on medication and not have to go through surgery; do you think that this is feasible?

Any information would be appreciated.

Tricia Christensen

Tricia Christensen

Writer

With a Literature degree from Sonoma State University and years of experience as a TheHealthBoard contributor, Tricia...
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