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The hippocampal formation is a compound structure in the medial temporal lobe of the brain. It forms a c-shaped bulge on the floor of the inferior horn of the lateral ventricle . [ 1 ] Typically, the hippocampal formation is said to included the dentate gyrus , the hippocampus , and the subiculum . [ 2 ]
Seizures in temporal lobe epilepsy can affect the normal development of new neurons and can cause tissue damage. Hippocampal sclerosis specific to the mesial temporal lobe, is the most common type of such tissue damage.
Lateral ventricles and horns The lateral ventricles connected to the third ventricle by the interventricular foramina. Each lateral ventricle takes the form of an elongated curve, with an additional anterior-facing continuation emerging inferiorly from a point near the posterior end of the curve; the junction is known as the trigone of the lateral ventricle.
must pass through the temporal lobe by looping around the inferior horn of the lateral ventricle. Carry information from the Superior part of the visual field: A lesion in the temporal lobe that results in damage to Meyer's loop causes a characteristic loss of vision in a superior quadrant (quadrantanopia or "pie in the sky" defect.)
Ventriculomegaly is a brain condition that mainly occurs in the fetus when the lateral ventricles become dilated. The most common definition uses a width of the atrium of the lateral ventricle of greater than 10 mm. [1] This occurs in around 1% of pregnancies. [2]
Temporal lobe signs usually involve auditory sensation and memory, and may include: [citation needed] deafness without damage to the structures of the ear, described as cortical deafness; tinnitus, auditory hallucinations; loss of ability to comprehend music or language, described as a sensory aphasia (Wernicke's aphasia)
The brain contains four main lobes: temporal lobe, parietal lobe, frontal lobe, and the occipital lobe. The temporoparietal junction lies in the region between the temporal and parietal lobes, near the lateral sulcus (Sylvian fissure). Specifically, it is composed of the inferior parietal lobule and the caudal parts of the superior temporal ...
An increase in impulsivity, risk taking or both is often seen in individuals following frontal lobe damage.The two related terms differ in that impulsivity is a response disinhibition, while risk taking is related to the reward-based aspects of decision-making. [7]