Teaching Video Neuro Images : Movement of a paralyzed arm with yawning
Copyright policy )Teaching Video Neuro Images : Movement of a paralyzed arm with yawning
A 63-year-old man presented with aphasia and right arm paralysis (Medical Research Council [MRC] grade 0), sparing the leg (video 1 on the Neurology ® Web site at [Neurology.org][1]). With yawning, his right arm consistently rose to his chest (video 2). Paralysis resumed after yawning. MRI confirmed an acute ischemic stroke in the left middle cerebral artery distribution (figure). This movement ceased after 2 weeks following partial recovery of arm strength (MRC grade 4). This phenomenon, first described in the 1844, was recently coined parakinesia brachialis oscitans. It is speculated to be a release event in which damaged cortical pathways no longer inhibit phylogenetically older brainstem pathways stimulated by yawning.1,2 [1]: http://www.neurology.org/
- Washington University in St. Louis United States
- University of Mary United States
Male, Video Recording, Infarction, Middle Cerebral Artery, Neuroimaging, Middle Aged, Neurology, Arm, Humans, Paralysis, Yawning
Male, Video Recording, Infarction, Middle Cerebral Artery, Neuroimaging, Middle Aged, Neurology, Arm, Humans, Paralysis, Yawning
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