Visual Cortex facts
While investigating facts about Visual Cortex Function and Visual Cortex Location, I found out little known, but curios details like:
Some people have "blindsight." They are blind due to damage in the brain's visual cortex, but the eye and optic nerve are fine. They can't consciously see anything but can guess their way through an obstacle course or guess the emotional content of a photo through intuition with decent accuracy.
how visual cortex works?
Due to the way other parts of the brain processes the info sent to it from our eyes, people who are blind from an injury to the visual cortex are still able to sense emotion in faces or sense obstacles in their way and avoid them despite their visual cortex not recognizing the signals sent.
What does the visual cortex do?
In my opinion, it is useful to put together a list of the most interesting details from trusted sources that I've come across answering what is the visual cortex. Here are 14 of the best facts about Visual Cortex Damage and Visual Cortex Disorder I managed to collect.
what transports images to the visual cortex of the brain?
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Cats are able to use their whiskers to create a three-dimensional map of their surroundings. The structure of the brain region (barrel cortex) which receives information from the whiskers is similar to that found in the visual cortex.
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Blind people who use echo location can literally see much like sighted people can. We all form images in the visual cortex of our brains to "see." Blind folk form these images from sound; sighted people form them from light.
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The cells of the visual cortex do not regenerate. These cells are as old as you are.
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Neanderthals had brains at least as big as modern humans, but the visual cortex took up more space than it does in humans today. Modern humans are smarter because the part of the brain that enables higher thinks has more space compared to Neanderthals.
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Based on University of Toronto study, our mood can actually change how our visual cortex processes information.
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The occipital (visual) cortex in the blind can be recruited by sensory substitution training (training to recognise vibrations) and hence can help the blind visualize the world around them through vibrations!
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Eşref Armağan is able to paint art that has visual perspective despite being born without sight, brain scans show that his visual cortex signals are similar to those of people who can see.
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The fovea, the most high definition portion of your retina (or eyeball), takes up less than 1% of space on the retina yet uses 50% of the visual cortex
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Information from your left eye isn't processed by your right visual cortex. Instead, information from the left side of your left and right eye is processed by the right cortex.
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Thomas Edison said that 46 frames per second for silent films was the minimum needed by the visual cortex: "Anything less will strain the eye." Current industry standard filming and projection formats are 24 FPS.
What is true about visual cortex?
You can easily fact check it by examining the linked well-known sources.
There are parts of the brain's visual cortex called "blob" and "interblob".
Blind people who navigate using clicks and echoes (echolocation) recruit the part of the brain used by sighted people to see. The echoes don't cause any unusual activity in the part of the brain used for hearing, but the information is extracted and passed on to the visual cortex for analysis. - source
