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Split-brain or callosal syndrome is a type of disconnection syndrome when the corpus callosum connecting the two hemispheres of the brain is severed to some degree. It is an association of symptoms produced by disruption of, or interference with, the connection between the hemispheres of the brain.
Gabrielle Dee Giffords (born June 8, 1970) is an American retired politician and gun control activist. She served as a member of the United States House of Representatives representing Arizona's 8th congressional district from January 2007 until January 2012, when she resigned because of a severe brain injury suffered during an assassination attempt.
Split-brain patients have been subjects for numerous psychological experiments that sought to discover what occurs in the brain after the primary interhemispheric pathways have been disrupted. Notable researchers in the field include Roger Sperry , one of the first to publish ideas involving a dual consciousness; and his famous graduate student ...
Nestled inside the right frontal lobe lesion, the creature measured 8cm lengthwise and 1mm across
Callosal syndrome, or split-brain, is an example of a disconnection syndrome from damage to the corpus callosum between the two hemispheres of the brain. Disconnection syndrome can also lead to aphasia , left-sided apraxia , and tactile aphasia, among other symptoms.
Sperry studied patients who had undergone corpus callosotomy and detailed their resulting split-brain characteristics. [ 2 ] Improvements to surgical techniques, along with refinements of the indications, have allowed van Wagenen's procedure to endure; corpus callosotomy is still commonly performed throughout the world. [ 5 ]
Mark, a Pennsylvania grandfather with ALS, is participating in a human trial with Synchron and is one of the first patients to be implanted with a brain-computer interface with the company. - CNN
In split-brain patients, the corpus callosum is cut, severing the main structure for communication between the two hemispheres. The first modern split-brain patient was a war veteran known as Patient W.J., [10] whose case contributed to further understanding of asymmetry. Brain asymmetry is not unique to humans.