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The corpus callosum (Latin for "tough body"), also callosal commissure, is a wide, thick nerve tract, consisting of a flat bundle of commissural fibers, beneath the cerebral cortex in the brain. The corpus callosum is only found in placental mammals. [1]
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.
The corpus callosum allows for communication between the two hemispheres and is found only in placental mammals. The anterior commissure serves as the primary mode of interhemispheric communication in marsupials , [ 9 ] [ 10 ] and which carries all the commissural fibers arising from the neocortex (also known as the neopallium), whereas in ...
An example is commissural disconnect in adults which usually results from surgical intervention, tumor, or interruption of the blood supply to the corpus callosum or the immediately adjacent structures. Callosal disconnection syndrome is characterized by left ideomotor apraxia and left-hand agraphia and/or tactile anomia, and is relatively rare.
When the corpus callosum is missing or not formed properly, it can lead to many dysfunctions throughout the body including hypothermia and hyperhidrosis. [4] Agenesis of the corpus callosum has been found in 40% of Shapiro syndrome cases reported. [4] It is theorized that Shapiro syndrome develops based on genetic factors. [1]
Agenesis of the corpus callosum (ACC) is a rare birth defect in which there is a complete or partial absence of the corpus callosum. It occurs when the development of the corpus callosum, the band of white matter connecting the two hemispheres in the brain , in the embryo is disrupted.
Andermann syndrome, also known as agenesis of corpus callosum with neuronopathy (ACCPN), Charlevoix disease and KCC3 axonopathy among other names, [1] is a very rare neurodegenerative genetic disorder that damages the nerves used to control muscles and related to sensation and is often associated with agenesis of the corpus callosum.
The males (all infants) had partial corpus callosum agenesis, severe intellectual disabilities, developmental delays, and epilepsy. The disorder first manifested right after birth, with recurrent seizures occurring hours after it. Out of these 5 babies, 3 had died. Post-mortem examination of one of the dead infants revealed chemical and ...