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Also shown are the insular cortex (purple), the brain stem (black), and the cerebellum (blue). The frontal lobe of the human brain is both relatively large in mass and less restricted in movement than the posterior portion of the brain. [1] It is a component of the cerebral system, which supports goal directed behavior. [2]
CT and MRI are most commonly used to observe the brain for cerebral atrophy. A CT scan takes cross sectional images of the brain using X-rays, while an MRI uses a magnetic field. With both measures, multiple images can be compared to see if there is a loss in brain volume over time. [20]
Frontal lobe disorder, also frontal lobe syndrome, is an impairment of the frontal lobe of the brain due to disease or frontal lobe injury. [5] The frontal lobe plays a key role in executive functions such as motivation, planning, social behaviour, and speech production.
Cerebritis is the inflammation of the cerebrum, which performs a number of important functions, such as memory and speech.It is also defined as a purulent nonencapsulated parenchymal infection of the brain which is characterized by nonspecific features on CT scans (ill-defined low density area with peripheral enhancement) and cannot reliably be distinguished from neoplasms.
Motor symptoms: Facial grimacing and complex automatisms like kicking and pelvic thrusting; Vocal symptoms: Laughing, yelling, or speech arrest. [6] Primary motor cortex. The primary motor cortex has jacksonian seizures that spread to adjacent areas of the lobe which often trigger a second round of seizures originating in another cortical area.
This disorder is often associated with brain lesions in the dominant (usually left) hemisphere including the angular and supramarginal gyri (Brodmann area 39 and 40 respectively) near the temporal and parietal lobe junction. There is significant debate in the scientific literature as to whether Gerstmann syndrome truly represents a unified ...
A relationship between hearing and the brain was first documented by Ambroise Paré, a 16th century battlefield doctor, who associated parietal lobe damage with acquired deafness (reported in Henschen, 1918 [8]). Systematic research into the manner in which the brain processes sounds, however, only began toward the end of the 19th century.
Computed tomography (CT scan): A CT scan may be normal if it is done soon after the onset of symptoms. A CT scan is the best test to look for bleeding in or around your brain. In some hospitals, a perfusion CT scan may be done to see where the blood is flowing and not flowing in your brain.