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A different way to see yourself
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Author:  Spender [ Tue Apr 30, 2013 4:19 am ]
Post subject:  A different way to see yourself

I found this fascinating, and perhaps just a glimpse of insight into the different ways we see ourselves externally, but with no recognition of what the brain sees. The image is copied from a different source, but I couldn't copy the two images in the actual article itself, so it's worth going there to have a look:

How your brain sees your body: Meet the cortical homunculus
By Esther Inglis-Arkell

We all know what bodies look like from the outside. This cortical homunculus is how your brain sees your body from the inside.

In the 1930s, Wilder Penfield performed surgeries on patients with epilepsy. While he had a live brain on the table, he figured he might as well poke around a bit. The doctor gathered data, finding out which parts of the cerebral cortex control which voluntary body functions and feeling. What he discovered was a vastly distorted view of the human body: the cortical homunculus.

The cortical homunculus represents the importance of various parts of your body as seen by your brain.

There is little need for the brain to know what's going on in the arms and legs. All these limbs need to do is stay out of an open flame and get your hands and feet to the right places. The hands, the tongue, the genitals, and the facial features are extremely important, and give people a ton of sensory information. As a result, they take up a lot of brain space.

Brain vision of body.jpg
Brain vision of body.jpg [ 23.77 KiB | Viewed 5457 times ]

Although the cortical homunculus is a curiosity, Penfield's work in mapping the brain's relationship to the body was invaluable.


Author:  veGA [ Tue Apr 30, 2013 4:25 am ]
Post subject:  Re: A different way to see yourself

Haha! I'd never, ever thought about it like this before, but it makes total sense.

Can't get over that facial expression. Heheheh.

Author:  Persephone [ Tue Apr 30, 2013 6:08 am ]
Post subject:  Re: A different way to see yourself

My aunt had epilepsy and had open brain surgery. She often talks about how during the operation they would stimulate a part of her brain and suddenly she'd 'hear' or 'see' or 'feel' things. Fascinating!

Author:  lou [ Tue Apr 30, 2013 10:54 am ]
Post subject:  Re: A different way to see yourself

wierd! but interesting....

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