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Agenesis of the corpus callosum (ACC) is a rare congenital disorder that is one of the most common brain malformations observed in human beings, [30] in which the corpus callosum is partially or completely absent. ACC is usually diagnosed within the first two years of life, and may manifest as a severe syndrome in infancy or childhood, as a ...
Focal seizures (also called partial seizures [1] and localized seizures) are seizures that affect initially only one hemisphere of the brain. [2] [3] The brain is divided into two hemispheres, each consisting of four lobes – the frontal, temporal, parietal and occipital lobes. A focal seizure is generated in and affects just one part of the ...
The amount of brain removed during the surgery depends on the extent of the brain involved in the seizures. It can range from just removing one lobe of the brain (temporal lobectomy) to disconnecting an entire side of the brain (hemispherectomy). [5] The procedure can be curative, where seizures are eliminated. [5]
The anterior part of the right hippocampus was larger and the posterior part was smaller, compared with sighted individuals. [87] There are several navigational cells in the brain that are either in the hippocampus itself or are strongly connected to it, such as the speed cells present in the medial entorhinal cortex. Together these cells form ...
A dystonic posture on one side of the body commonly indicates seizure onset from the opposite side of the brain e.g. right arm dystonic posture arising from a left temporal lobe seizure. [13] Impaired language function ( dysphasia ) during or soon following a seizure is more likely to occur when seizures arise from the language dominant side of ...
The dermis is composed of three major types of cells: [3] fibroblasts, macrophages, and mast cells.. Apart from these cells, the dermis is also composed of matrix components such as collagen (which provides strength), elastin (which provides elasticity), and extrafibrillar matrix, an extracellular gel-like substance primarily composed of glycosaminoglycans (most notably hyaluronan ...
About one-third of occipital seizures do not show any obvious changes. [5] An MRI would be performed to look at any lesions, damage, or abnormalities in the occipital region of a patient's brain. More specifically, a functional MRI, or fMRI, can detect changes in blood flow throughout the brain when specific parts of the brain are being used ...
The activation in the brain during an aura can spread through multiple regions continuously or discontinuously, on the same side or to both sides. [7] Auras are particularly common in focal seizures. If the motor cortex is involved in the overstimulation of neurons, motor auras can result. Likewise, somatosensory auras (such as tingling ...