temporal lobe


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lobe

 [lōb]
1. a more or less well defined portion of an organ or gland.
2. one of the main divisions of a tooth crown.
azygos lobe (lobe of azygos vein) a small anomalous lobe situated at the apex of the right lung, produced when the azygos vein arches over the upper part of the lung instead of at the hilus and presses deeply into the lung tissue to form a fissure that isolates a medial part of the lung.
caudate lobe a small lobe of the liver between the inferior vena cava on the right and the left lobe.
ear lobe the lower fleshy, noncartilaginous portion of the external ear.
flocculonodular lobe one of the main subdivisions of the cerebellum, located inferiorly, consisting of the paired flocculi, their peduncles, and the nodule of the vermis.
frontal lobe the anterior portion of the gray matter of each cerebral hemisphere.
hepatic lobe one of the lobes of the liver, designated the right and left and the caudate and quadrate.
l's of lung the five major subdivisions of the lungs. see accompanying illustration and see lung.
The lobes of the lungs. From Frazier et al., 2000.
occipital lobe the most posterior portion of each cerebral hemisphere, forming a small part of its posterolateral surface. See illustration.
The occipital lobe of the brain. From Applegate, 2000.
parietal lobe the upper central portion of the gray matter of each cerebral hemisphere, between the frontal lobe and the occipital lobe and above the temporal lobe. It is the receptive area for fine sensory stimuli, and the highest integration and coordination of sensory information is carried on here. Damage to it can produce defects in vision or aphasia.
polyalveolar lobe a congenital disorder characterized in early infancy by the presence of far more than the normal number of alveoli in a lobe of the lungs; thereafter, normal multiplication of alveoli does not take place and they become enlarged, i.e., emphysematous.
quadrate lobe
2. a small lobe of the liver, between the gallbladder on the right, and the left lobe.
Riedel's lobe an anomalous tongue-shaped mass of tissue projecting from the right lobe of the liver in some individuals.
spigelian lobe caudate lobe.
temporal lobe a long tongue-shaped process that is the lower lateral portion of each cerebral hemisphere.

tem·po·ral lobe

[TA]
a long lobe, the lowest of the major subdivisions of the cortical mantle, forming the posterior two thirds of the ventral surface of the cerebral hemisphere, separated from the frontal and parietal lobes above it by the lateral sulcus arbitrarily delineated by an imaginary plane from the occipital lobe with which it is continuous posteriorly. The temporal lobe has a heterogeneous composition: in addition to a large neocortical component consisting of the superior, middle, and inferior temporal gyri and the lateral and medial occipitotemporal gyri, it includes the largely juxtallocortical parahippocampal gyrus with its paleocortical (olfactory) uncus and, beneath the latter, the amygdala.

temporal lobe

n.
The lower lateral lobe of either cerebral hemisphere, located in front of the occipital lobe and containing the sensory center of hearing in the brain.

tem·po·ral lobe

(tem'pŏr-ăl lōb) [TA]
The long and lowest of the major subdivisions of the cortical mantle, forming the posterior two thirds of the ventral surface of the cerebral hemisphere, separated from the frontal and parietal lobes above it by the lateral sulcus arbitrarily delineated by an imaginary plane from the occipital lobe with which it is continuous posteriorly. The temporal lobe has a heterogeneous composition: in addition to a large neocortical component consisting of the superior, middle, and inferior temporal gyri and the lateral and medial occipitotemporal gyri, it includes the largely juxtallocortical parahippocampal gyrus with its paleocortical (olfactory) uncus and, beneath the latter, the amygdala.
Synonym(s): lobus temporalis [TA] .

Temporal lobe

The part of each side or hemisphere of the brain that is on the side of the head, nearest the ears.
Mentioned in: Aphasia

tem·po·ral lobe

(tem'pŏr-ăl lōb) [TA]
The long and lowest of the major subdivisions of the cortical mantle, forming the posterior two thirds of the ventral surface of the cerebral hemisphere, separated from the frontal and parietal lobes above it by the lateral sulcus arbitrarily delineated by an imaginary plane from the occipital lobe with which it is continuous posteriorly.
Synonym(s): lobus temporalis [TA] .
References in periodicals archive ?
This study concludes, on the basis of the measurements made, that there are differences between the right and left temporal lobes.
Willis underwent corrective surgery for mesial temporal lobe epilepsy in July 2000, after which she stopped having seizures and two years later ceased taking medication.
During the interictal period, the affected temporal lobe exhibits decreased perfusion (uptake) of radiotracer and is "cold" on the image.
This, in turn, suggests that the brain's temporal lobe is involved in religious experience.
also measured [pH.sub.i] in a general region of dorsal cerebral cortex whereas we measured medial temporal lobe [pH.sub.i].
The common pathology of these causes is bilateral destruction or dysfunction of mesial temporal lobes, but there are case reports showing that unilateral damage (left temporal lobectomy or damage of the right amygdala) can also cause similar symptoms (6,7).
The prospect of thinning in the brain's medial temporal lobe should spark plenty of worry.
Tests using high-resolution MRI scans provided detailed examination of the medial temporal lobe, a region involved in forming new memories.
The researchers found that, compared to typically developing children, children with ADHD had reductions in bilateral frontal, parietal, and temporal lobe gray matter volumes, with the largest effect sizes noted for right frontal and left temporal lobe volumes.
Voxels of 2 x 2 x 2 [cm.sup.3] were positioned in the regions of the left frontal lobe and left temporal lobe. A trained investigator located voxels by eye by means of T1-weighted sections in sagittal, coronal, and axial planes, and the inclusion of CSF was minimized.
In this article, we present a rare case of craniopharyngioma arising from the left temporal lobe. Temporal lobe is an extremely unusual location for this tumor and we could find only one case of craniopharyngioma in this location reported in 1999 at Korea [4].

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