Corpus-callosum

Balken,m. beam girder band (Anat.) corpus callosum, mikrowage,/. beam microbalance, -wage, /. beam balance. 

Corpus callosum A bridge of nerve fibres between the two cerebral hemispheres. 

FIGURE 1-1 Coronal section of the human brain at the thalamic level stained by the Heidenhain technique for myelin. Gray matter stains faintly, all myelinated regions are black. The thalamus ( ) lies beneath the lateral ventricles and is separated at this level by the beginning of the third ventricle. The roof of the lateral ventricles is formed by the corpus callosum (small arrows). Ammon s horns are shown by the large arrows. Note the outline of gyri and sulci at the surface of the cerebral hemispheres, sectioned here near the junction of the frontal and parietal cortices. 

Levine S. 1969. Experimental cyanide encephalopathy Gradients of susceptibility in the corpus callosum. J Neuropathol Exp Neurol 26 214-222. 

Thalamic nuclei Hypothalamus Corpus callosum Cerebellum (deep nuclear layer)... 

CYP21 mRNA expressed in human amygdala, caudate nucleus, cerebellum, corpus callosum, hippocampus, spinal cord, and thalamus (Yu et al., 2002). 

Prior to data analysis, some preprocessing may be desirable or necessary. Normalization of acquired images to regions that should contain no mRNA (e.g., corpus callosum), which can reduce signal variance (see Ambesi-Impiombato et al., 2003). Algorithms have also been developed that allow the comparison of... 

As we move forward, it will prove helpful to get some basic aspects of the human nervous system in place. An enormous amount of work has gone into making associations between brain anatomy and function. Starting with the three main parts of the brain, we know that the cerebrum is the seat of consciousness. It is divided into two hemispheres, which are linked by the corpus callosum. In a very general sense, the left hemisphere is associated with intellectual and the right hemisphere with emotional responses. Within the cerebrum, one can associate a number of brain areas (the prefrontal, frontal, temporal, parietal, and occipital lobes, for example) with functions including vision and hearing. One can make crude maps in which function is mapped onto brain structure. 

Figure 1.2 presents a coronal section through the human brain. In brief, the brain may be divided into the brainstem (consisting of the medulla, pons and midbrain) that is linked to the diencephalon which is composed of the thalamus and the hypothalamus. The two cerebral hemispheres are linked by the corpus callosum, a large tract of nerve fibres that enables the two... 

Instead of hippocampal atrophy, the children and adolescents with PTSD were found to have smaller intracranial and cerebral volumes than matched controls increased right, left, and total lateral ventricle volume and decreased volume of the medial and posterior portions of the corpus callosum (CC) (De Beilis et ah, 1999). Consistent with this investigation, in a recent abstract, psychiatric inpatients with a history of mal-... 

De Beilis et al., 1999 44 PTSD 20/44 with comorhid MDD 61 NC 6-17 Structural MRI, 1.5 mm slice thickness PTSD = PTSD + MDD = NC hippocampal volume PTSD = PTSD + MDD > NC lateral ventricle volume PTSD = PTSD + MDD < NC middle and posterior regions of the corpus callosum... 

Sanchez, M.M., Hearn, E.E, Do, D., Rilling, J.K., and Herndon, J.G. (1998) Differential rearing affects corpus callosum size and cognitive function of rhesus monkeys. Brain Res 812 38-49. 

Teicher, M.H., Anderson, S.L., Dumont, Y., et al. (2000) Childhood neglect attenuates development of the corpus callosum. Neuroscience 206 872. 

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