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Small cortical strokes may cause predominant weakness restricted to a particular group of fingers. However, clinical, radiologic, and etiopathogenetical studies have rarely been done in these patients. The results agree with traditionally alleged topography for fingers in the human motor cortex: ulnar fingers-medial and radial fingers-lateral. However, whether this result indicates a point-to-point somatotopical representation or differential threshold of excitability in individual neuron s remains unknown. Sensory topography seems to be closely associated with that of motor function in individual subjects. The motor cortex representing ulnar-sided fingers may be a borderzone area between large arteries. |
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border zone infarct
carotid artery disease
cerebral embolism
cerebral embolism,cardiac origin
cerebral infarction
cerebrovascular accident
cerebrovascular accident,location of
cortical hand knob
cortical hand knob infarct
cortical infarction
cortical infarction,small
cortical topography
finger weakness
hand weakness
middle cerebral artery territory infarction
middle cerebral artery,emboli to
middle cerebral artery,occlusion of
monoparesis,focal
MRI
MRI,abnormal
pseudoperipheral palsy
pseudoulnar palsy
sensorimotor stroke
sensory loss
sensory loss,cortical
sensory loss,pseudoradicular
sensory symptoms
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