The corpus callosum is similar to a bridge: just think of any famous bridge in your location, they help you get from point A to point B, usually over a body of water. (By the way, I put the Sydney Harbour Bridge here for an example as it is both known all over the world and I’m Aussie, albeit not from Sydney). As the picture below demonstrates, the corpus callosum is the area at which signals from one hemisphere go before they are transferred to the the other hemisphere. It is located directly beneath the cerebrum. Without this vital structure: the two hemispheres of the brain would not be able to successfully communicate with one another and information relating to motor function, sensory input and higher thinking processes would be stuck in one area. This is important because the corpus callosum plays a role with these other functions in the brain:
- Movement of the eyes
- Being able to localise your sense of touch
- Being able to determine what an object is by both picking out the right word in your language centres and by recalling the object from your secondary visual centre: the lack of this ability is known as aphasia.