occipital lobe


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Related to occipital lobe: frontal lobe, parietal lobe, temporal lobe

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.

oc·cip·i·tal lobe of cer·e·brum

[TA]
the posterior, somewhat pyramid-shaped part of each cerebral hemisphere, demarcated by no distinct surface markings on the lateral convexity of the hemisphere from the parietal and temporal lobes, but sharply delineated from the parietal lobe by the parietooccipital sulcus on the medial surface.
Synonym(s): lobus occipitalis [TA], occipital lobe [TA]

occipital lobe

n.
The posterior lobe of each cerebral hemisphere, having the shape of a three-sided pyramid and containing the visual center of the brain.

occipital lobe

The rear lobe of the main brain (cerebral hemisphere). The occipital lobe is concerned with vision.

occipital lobe

the posterior area of the CEREBRAL HEMISPHERE lying behind the parietal lobe and responsible for the interpretation of visual stimuli from the retina.

lobe, occipital

Portion of each cerebral hemisphere posterior to the parietal lobe where visual information is received and processing begins. See visual area.
References in periodicals archive ?
Caption: Figure 1: Contrast-enhanced cranial CT demonstrating a hemorrhagic focus in the right parietal and occipital lobes with possible secondary bilateral infarction due to compression of posterior circulation vessels, subfalcine herniation, beginning uncal herniation, and cerebral edema.
Significant main effects were found for type (F(3,54) = 12.69, p < 0.001; P2 amplitude for ellipse was significantly smaller than those for other figures (p <0.01)) and lobe (F(3, 54) = 26.61,p < 0.001; P2 amplitude in the temporal lobe was significantly smaller than that in the frontal lobe (p < 0.05) and that in the parietal lobe (p < 0.001), as well as that in the occipital lobe (p < 0.001)).
Six features from three electrodes located at the occipital lobe were used in the binary classification modelling.
Simple VH have most often been linked with the primary visual cortex in the occipital lobe while complex VH are more often associated with higher order visual association areas in the temporal lobe [10].
People with Creutzfeldt-Jakob lose control of their limbs and their emotions - and, the&nbsp;Primary Care Companion&nbsp;article notes, could experience hallucinations when the condition affects the occipital lobe.
A corresponding fluid attenuated inversion recovery (FLAIR) image (FIGURE 1B) shows an abnormal parenchymal signal and hyperintensity in the left occipital lobe, which is the area of the stroke.
[11] Our case is probably the first CPP to be reported in the occipital lobe.
In addition, the lateral ventricles were enlarged more prominently in the parietooccipital region, and a large encephalomalacic cyst was present in the right occipital lobe (Figures 2, C, and 3).
Our findings suggested that the whole occipital lobe was involved, including BA17 and BA18 areas and superior extrastriate areas.
38 Female Left temporal and parietal regions GUmUs and 55 Female Left middle cerebral artery Yilmaz territory Hashmi 57 Male Right middle cerebral artery territory Theeler and Ney 63 Male Right occipital lobe infarction Pena et al.
"A doctor told me I had damaged my frontal temporal and occipital lobe in the brain.
On MRI, FLAIR sequence showed bilateral and symmetrical hyperintensities in the posterior limb of the internal capsule, occipital lobe white matter, and splenium of the corpus callosum (Figure 1).