cerebral hemisphere


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hemisphere

 [hem´ĭ-sfēr]
half of a spherical or roughly spherical structure or organ.
cerebral hemisphere one of the paired structures constituting the largest part of the brain, which together comprise the extensive cerebral cortex, centrum semiovale, basal ganglia, and rhinencephalon, and contain the lateral ventricle. See also brain.
cerebellar hemisphere either of the paired portions of the cerebellum lateral to the vermis.
dominant hemisphere the cerebral hemisphere that is more concerned than the other in the integration of sensations and the control of many functions. See also laterality.

ce·re·bral hem·i·sphere

[TA]
the large mass of the telencephalon, on either side of the midline, consisting of the cerebral cortex and its associated fiber systems, together with the deeper-lying subcortical telencephalic nuclei (that is, basal nuclei [ganglia]).
Synonym(s): hemispherium cerebri [TA]

cerebral hemisphere

n.
Either of the two symmetrical halves of the cerebrum, as divided by the longitudinal cerebral fissure.

ce·re·bral hem·is·phere

(ser'ĕ-brăl hem'is-fēr') [TA]
1. Synonym(s): hemisphere.
2. The large mass of the telencephalon, on either side of themidline, consisting of the cerebral cortex and its associated fiber systems, together with the deeper-lying subcortical telencephalic nuclei(i.e., basal ganglia [nuclei]).
Synonym(s): hemispherium (1) .
Cerebral hemispheresclick for a larger image
Fig. 98 Cerebral hemispheres . Localization of functions in the human brain.

cerebral hemisphere

one of a pair of large lobes in the forebrain of vertebrates. In reptiles, birds and mammals the coordinating function is dominant and the cerebral hemispheres control most of the activities of the animals, whereas in lower vertebrates the hemispheres are associated mainly with the sense of smell. In mammals the enlargements of the cerebral hemispheres, the largest part of the BRAIN, are caused by the development of the NEOPALLIUM (part of the CEREBRAL CORTEX) which forms the entire roof and sides of the forebrain. The frontal lobes are particularly developed in humans and are the seat of memory, thought and a considerable part of what is considered to be intelligence.

ce·re·bral hem·is·phere

(ser'ĕ-brăl hem'is-fēr') [TA]
Large mass of telencephalon, on either side of midline, consisting of the cerebral cortex and its associated fiber systems, together with the deeper-lying subcortical telencephalic nuclei (i.e., basal nuclei [ganglia]).
References in periodicals archive ?
These steps were taken to ensure that the cerebral hemisphere dominance and personality scores would not influence scoring in the autoganzfeld by introducing experimenter or participant expectancy biases.
Marked asymmetries and duplicated Heschl's gyri affect phonological decoding ability more than comprehension, while reduced volume of the cerebral hemispheres and auditory structures in the left hemisphere (the first Heschl's gyrus and the planum temporale) affect comprehension more than phonological decoding.
One explanation for the respective roles of the left and right cerebral hemispheres lies in the proposal of open-loop and closed-loop components to movement [29].
The MCA supplies the lateral parts of the cerebral hemispheres. Its lenticulostriate branches supply the basal ganglia and internal capsule.
Magnetic resonance imaging of the brain revealed focal T2 and fluid-attenuated inversion recovery hyperintense lesions in the right cerebral hemisphere and in the midbrain.
The final phase (stage 4) is characterized by disappearance of the increased signal, leaving a markedly atrophied cerebral hemisphere.
The frontal lobes are an area in the brain of mammals located at the front of each cerebral hemisphere, and are thought to be critical for advanced intelligence.
With this system, the segments can be measured (representing the CC thickness at several locations) and used as seeds for fibre tracking separately in each cerebral hemisphere (Fig.
Each cerebral hemisphere is divided by deeper sulci (grooves) called fissures into five lobes, four located on the surface frontal lobe (the faces of the hemispheres), parietal lobe (central parts of the cerebral hemispheres), temporal lobe (external and lateral parts of the cerebral hemispheres) and occipital lobe (posterior parts of the cerebral hemispheres)-and one located centrally-the island (fig.
"It taps into emotional brain centres and appears to arise in the right brain, whereas most language production occurs in the left cerebral hemisphere of the brain.
The right cerebral hemisphere may be more susceptible to paradoxical embolization due to anatomy.
Hemimegalencephaly is unilateral megalencephaly that is isolated, part of a hemihypertrophy syndrome or the result of hamartomatous overgrowth of one cerebral hemisphere. The malformation occurs because of defective neuronal proliferation, migration and cortical organization.