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The most common cause of ideomotor apraxia is a unilateral ischemic lesion to the brain, which is damage to one hemisphere of the brain due to a disruption of the blood supply, as in a stroke. There are a variety of brain areas where lesions have been correlated to ideomotor apraxia.
Apraxia is most often due to a lesion located in the dominant (usually left) hemisphere of the brain, typically in the frontal and parietal lobes. Lesions may be due to stroke , acquired brain injuries , or neurodegenerative diseases such as Alzheimer's disease or other dementias , Parkinson's disease , or Huntington's disease .
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 ...
Constructional apraxia is common after right parietal stroke and it continues after visuospatial symptoms have subsided. [5] Patients with posterior and parietal lobe lesions tend to have the most severe symptoms. [9] In Alzheimer's disease research, the AT8 antibody has proven to be an early indicator of tau protein pathology.
Gerstmann syndrome is a neurological disorder that is characterized by a constellation of symptoms [1] that suggests the presence of a lesion usually near the junction of the temporal and parietal lobes at or near the angular gyrus. Gerstmann syndrome is typically associated with damage to the inferior parietal lobule of the dominant hemisphere ...
In the early 1950s, Twitchell began studying the pattern of recovery in stroke patients. He reported on 121 patients whom he had observed. He found that by four weeks, if there is some recovery of hand function, there is a 70% chance of making a full or good recovery.
The precuneus is involved in memory tasks, such as when people look at images and try to respond based on what they have remembered in regard to verbal questions about their spatial details. [12] It is involved with the left prefrontal cortex in the recall of episodic memories [ 13 ] [ 14 ] including past episodes related to the self. [ 10 ]
Illustration showing the position of the parietal lobe of the brain, the site of damage related to visual extinction. Visual extinction is a neurological disorder which occurs following damage to the parietal lobe of the brain. It is similar to, but distinct from, hemispatial neglect. Visual extinction has the characteristic symptom of ...
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