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