callosotomy


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callosotomy

(ka-los′tŏ-mē) [ (corpus) callosum + -tomy]
The surgical separation of the cerebral hemispheres by cutting the corpus callosum. It is used to treat refractory seizures and usually decreases their severity by preventing the spread of seizure activity from one side of the brain to the other.
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Callosotomy aims to partially disconnect the cerebral hemispheres, thus helping to prevent the spread of epileptic discharge between the hemispheres.
Indication and surgical technique for callosotomy. Arch Neurocien (Mexico).
By the end of the novel, Tichy's left brain finally discovers in Morse code a foolproof means of communicating with his right brain in spite of the callosotomy. But by the time this happens, the plot has been clouded by so many counter-counterspies operating within one another's organizations that it hardly matters who knows what.
It is this premise which allows him to infer, from the fact that afte a callosotomy I do not have conscious access to what is going on in the mind based in my disconnected right brain, the conclusion that that mind is not 'mine' and therefore belongs to 'another' person.
After to removal this cortical block, (Figure 2 a, 2 b) the next step is the completion of the transventricular parasagittal callosotomy (8).
In this paper, the results obtained in normal subjects and in callosotomy patients are presented together to provide an overview of the functional organization of the CC.
In the previous case, a child underwent a focal resection before undergoing a corpus callosotomy. In this case, of a 19-year-old with autism and severe developmental delays, the procedures were reversed.
If it is absurd, then of course a callosotomy would not have the anticipated effect, and this would explain his confidence in a negative outcome at a time (circa 1911) when such surgery was neither technically feasible nor medically justifiable.
Corpus callosotomy is a palliative surgical approach that aims to control potentially harmful seizures, for instance, atonic or drop seizures, preventing the spread of epileptic electrical activity (4).
Indeed, by contrasting differently oriented and located bilateral gratings before and after the section of the CC, the authors have shown that interhemispheric synchronization of epidural EEG increases in response to the isooriented gratings near the vertical meridian compared to the orthogonally oriented gratings, whereas callosotomy abolishes the effects of stimulus configuration.
They wanted to perform a corpus callosotomy, where the bundle of nerve fibers connecting the brain's hemispheres are partially or completely severed.
A surgery called a corpus callosotomy either partially or completely severs the corpus callosum--the nerve fibers that connect the brain's hemispheres.