Search Results for "Left Posterior Parietal Occipital Stroke"
Original Source: Sequelae of a left-sided parietal stroke: Posterior alien hand syndrome.
Posterior alien hand syndrome is a new addition to a poorly understood group of movement disorders. Historically, anatomical lesions causing uncontrolled limb movement and a feeling of foreignness were found to be located in the corpus callosum or frontal lobe. Recent case reports, however, demonstrate the typical symptoms of alien hand syndrome with lesions located in the parietal/occipital lobes. Disturbance of normal function in these regions tends to produce less complex motor activity, such as hand lev...
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Spaces within spaces: rat parietal cortex neurons register position across three reference frames
Neurons in the parietal cortex have been shown to encode position in external reference frames. This work demonstrates that parietal cortex neurons can simultaneously register spatial information in m...
One region, two functions: Multitasking key to overall brain function
A region of the brain known to play a key role in visual and spatial processing has a parallel function: sorting visual information into categories. Different types of information can be simultaneousl...
Magnetic resonance angiography of the posterior circulation
Identify the structures labelled A-F in this image from magnetic resonance angiography of the posterior circulation.bmj;345/nov08_1/e7400/FIG1F1fig1AnswersA: Left vertebral arteryB: Basilar arteryC:.....
Familial History of Bone Tumors Familial History of Bone Tumors
A 61-year-old man presents with progressive chronic pain of his lower extremities and episodes of dysthesia of his left foot. On physical examination, he has bowing of his extremities with prominent b...
FDA approves Exactech's new Gibralt Occipital Spine System
The US Food and Drug Administration (FDA) has accorded its approval for a new Gibralt Occipital Spine System, developed by the US-based Exactech.
Reasoning Training Increases Brain Connectivity Associated with High-Level Cognition
A number of studies across various domains-- from juggling to taxi navigation to meditation to music to motor learning to processing speed-- demonstrate the importance of experience on patterns of neu...
Early involvement of prefrontal cortex in visual bottom-up attention
The authors found that, when monkeys detected a salient stimulus defined purely by bottom-up factors, neurons in the dorsolateral prefrontal cortex represented the stimulus no later than those in the...
1 region, 2 functions: Brain cells' multitasking key to understanding overall brain function
(University of Chicago Medical Center) A region of the brain known to play a key role in visual and spatial processing has a parallel function: sorting visual information into categories. A new study...
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Sequelae of a left-sided parietal stroke: Posterior alien hand syndrome.
Posterior alien hand syndrome is a new addition to a poorly understood group of movement disorders. Historically, anatomical lesions causing uncontrolled limb movement and a feeling of foreignness wer...
This paper presents the first systematic review and meta-analysis of neuropsychological and brain morphometry studies comparing posterior cortical atrophy (PCA) to typical Alzheimer's disease (tAD). L...
Anomalous origins of the calcarine and parieto-occipital arteries.
Understanding cerebrovascular anatomy and its variations is of utmost importance in treating vascular malformations. The two patients presented here demonstrate yet to be reported anomalous origins of...
A parieto-occipital artery arising from ICA directly and resultant incomplete PCA.
A parieto-occipital artery arising from internal carotid artery (ICA) directly was identified in a 46-year old man. The left ICA angiograms showed that a parieto-occipital artery was arising from ICA...
Representation of eye position in the human parietal cortex.
Neurons that signal eye position are thought to make a vital contribution to distinguishing real-world motion from retinal motion due to eye movements, but relatively little is known about such neuron...
