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Language functions such as grammar, vocabulary and literal meaning are typically lateralized to the left hemisphere, especially in right-handed individuals. [7] While language production is left-lateralized in up to 90% of right-handers, it is more bilateral, or even right-lateralized, in approximately 50% of left-handers. [8]
Gerstmann syndrome is typically associated with damage to the inferior parietal lobule of the dominant hemisphere. It is classically considered a left-hemisphere disorder, although right-hemisphere damage has also been associated with components of the syndrome. [2] It is named after Jewish Austrian-born American neurologist Josef Gerstmann. [3]
For example, a stroke affecting the right parietal lobe of the brain can lead to neglect for the left side of the visual field, causing a patient with neglect to behave as if the left side of sensory space is nonexistent (although they can still turn left). In an extreme case, a patient with neglect might fail to eat the food on the left half ...
A person can show one or more of these symptoms during a stroke. Decreased consciousness is more uncommon than in stroke due to intracerebral hemorrhage, but may be present when there is infarctions in more than one part of the brain or in the brain stem. [13] Symptoms of cerebral infarction can help determine which parts of the brain are affected.
Pediatric stroke is a stroke that occurs in children or adolescents. Stroke affects an estimated 2.5 to 13 per 100,000 children annually. [1] The signs and symptoms of stroke in children, infants, and newborns are different from those in adults. The causes and risk factors of stroke in children are also different from those in adults. [2]
[7] [9] It has been linked to parietal lesions in the left and right hemisphere, stroke and Alzheimer's disease. Initially, researchers tried to isolate the cause to left hemisphere lesions in the parietal lobe because of its similarities to Gerstmann syndrome; however, lesions in the dorsal stream also result in visual agnosia and a piecemeal ...
Middle cerebral artery syndrome is a condition whereby the blood supply from the middle cerebral artery (MCA) is restricted, leading to a reduction of the function of the portions of the brain supplied by that vessel: the lateral aspects of frontal, temporal and parietal lobes, the corona radiata, globus pallidus, caudate and putamen.
Pusher syndrome is a condition observed in some people following a stroke or other condition which has left them with one side weakened due to hemiparesis. Sufferers exhibit a tendency to actively push away from the unweakened side, thus leading to a loss of postural balance. It can be a result of left or right brain damage.