corpus callosum

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corpus callosum:

see brainbrain,
the supervisory center of the nervous system in all vertebrates. It also serves as the site of emotions, memory, self-awareness, and thought. Anatomy and Function
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Corpus Callosum


in placental mammals and man, the aggregation of nerve fibers connecting the cerebral hemispheres.

The corpus callosum develops in the higher mammals from the commissure of the mantle (present in lung-fish, amphibians, reptiles, birds, and cloacal mammals) in connection with the strong development of the cerebral cortex. The fibers of the corpus callosum run mostly in a transverse direction, connecting and exchanging neural impulses between matching areas of the hemispheres. Therefore, both hemispheres together constitute a single unit. Fibers connecting different gyri in the two hemispheres also pass through the corpus callosum (for example, frontal with parietal or occipital). The fibers of the corpus callosum also send collaterals (associative fibers) to different parts of the same hemisphere.

corpus callosum

[′kȯr·pəs kə′lō·səm]
A band of nerve tissue connecting the cerebral hemispheres in humans and higher mammals.
References in periodicals archive ?
A controlled magnetic resonance imaging study of corpus callosum thickness in schizophrenia.
The acrocallosal syndrome comprises preaxial polysyndactyly, macrocephaly, agenesis of the corpus callosum, mental retardation, seizures, and hernias (12).
Evaluation of corpus callosum anisotropy in young adults with fetal alcohol syndrome according to diffusion tensor imaging.
Paul, "Cognitive and Psychosocial Deficits in Agenesis of the Corpus Callosum with Normal Intelligence," Cognitive Neuro-psychiatry, 5 (2000): 135-57; W.
Transcaudate: genu corpus callosum, cavum septi pellucidi, frontal horn of lateral ventricles, caudate nucleus, Sylvian sulcus
Diffusion alterations in corpus callosum of patients with HIV.
frontal or parietal lobes, corticospinal fibres, corpus callosum
David, who was left in a coma after the crash, saw a documentary about how Ivan needed dolphin therapy to help beat the rare brain disorder, corpus callosum.
Methods: We compared ADC values and FA values calculated from DTI of the anterior and posterior corpus callosum in four patients (mean [+ or -] SD: 24.
A boy's corpus callosum, the tissue connecting the brain hemispheres, is up to 25 percent smaller than a girl's.
Montie is taking that research a step further by studying whether contaminants accumulate in and affect specific brain regions--those that depend on thyroid hormones for maturation, such as the cerebellum, corpus callosum, and hippocampus.
Without the network of nerves that integrates communication and function, called the corpus callosum, the two hemispheres would quite literally suffer a disconnect, making it impossible for them to work as a coordinated whole brain.