Corpus Callosum

By Ericka Marshall & Kassie Moore

Latin for “Tough Body”

Location of Corpus Callosum?

Underneath the cerebrum at the center of the brain.

Example to remember the Corpus Callosum!

What is the Corpus Callosum made up of?

Largest connective pathway

200 million nerve fibers

Connects left & right hemisphere

“Communication”

Communication!

Connects between left and right hemisphere!

Story of Kim Peeks life through his eyes!

Function of the brain?

Communication between the Brain Hemisphere

Eye Movement

Maintaining the Balance of Arousal and Attention

Tactile Localization

Eye movement?

Right Eye connected to Left Hemisphere

Left Eye connected to the Right Hemisphere

Maintaining the Balance of Arousal and Attention?

Attention

Alert

Aroused

Aware of your surroundings

Example of Arousal and Attention in the Corpus

Callosum

Tactile Localization?

Hand-eye coordination

Types of Behaviors that the corpus Callosum controls?

Children with autism have a smaller corpus callosum.

How does this part of the brain work?

Transfers the following: Motor information

Sensory information

Cognitive information

“ALL THROUGH LEFT & RIGHT HEMISPERES!”

Connected to other parts of the brain?

In the middle of the fowllowing:

Left Hemisphere

Right Hemisphere

Acts as a strong bond

Received, Processed, & Sent out?

Receive: information from both the left and right hemisphere

Processed: Left hemisphere= Right hemisphere

Right hemisphere = Left hemisphere

Sent out: Body is sent information on what both the hemispheres want them to do.

Discovery of the Corpus Callosum?

In 1961, a 41-year-old policeman complained about the following:

Headaches Nausea Vomiting Forgetful Confused

Early Research?

Corpus Callosum bigger in women or men?

If the Corpus Callosum was injured?

Little, if any communication between the left and right brains can occur with AgCC

What you see out of your left eye goes to the right side of your brain and vice versa, but the speech center is located on the same side as the eye

Causes: Prenatal infections or viruses, genetic abnormalities, toxic metabolic conditions, blocking of growth to the Corpus Callosum

Many people with the disorder are healthy, but some have siezeres or need other medical attention

Symptoms

Disorder does not change

Symptoms:

Clumsiness

Oversensitivity to certain things but high tolerance for pain

Challenges with social interactions

Limited insight to own behavior

Current Research?

Studying emotional responsiveness and social cognitive in adults with “AgCC”

Does the brain adapt in different ways to compensate for the missing Corpus Callosum?

Work Cited

http://biology.about.com/od/anatomy/p/corpus-callosum.htm

http://cnsvp.stanford.edu/atlas/corpus_callosum.html

http://www.nodcc.org/index.php?option=com_content&task=view&id=12&Itemid=27

http://hubel.med.harvard.edu/book/b34.htm