The Ipsilateral Human Motor Cortex Can Functionally Compensate for Acute Contralateral Motor Cortex Dysfunction
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چکیده
منابع مشابه
The Ipsilateral Human Motor Cortex Can Functionally Compensate for Acute Contralateral Motor Cortex Dysfunction
What promotes motor recovery from stroke? To date, studies of recovery from stroke have shown alterations in function in various cortical areas, including the contralesional (unaffected) motor cortex (M1). However, whether these changes contribute to recovery or are mere epiphenomena remains unclear. We therefore sought evidence that the ipsilateral M1 can compensate for dysfunction of the cont...
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28 29 The role of ipsilateral primary motor cortex (M1) in hand motor control during complex 30 task performance remains controversial. Bilateral M1 activation is inconsistently 31 observed in fMRI studies of unilateral hand performance. Two factors limit the 32 interpretation of these data. As the motor tasks differ qualitatively in these studies, it is 33 conceivable that M1 contributions dif...
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The primary motor cortex (M1) plays a critical role in early aspects of motor skill learning. Given the notion of inter-hemispheric competition, unilateral disruption of M1 may increase excitability of the unaffected motor cortex and thus improve motor learning with the ipsilateral hand. We applied slow-frequency repetitive transcranial magnetic stimulation (rTMS) before the initiation of pract...
متن کاملMotor demand-dependent activation of ipsilateral motor cortex.
The role of ipsilateral primary motor cortex (M1) in hand motor control during complex task performance remains controversial. Bilateral M1 activation is inconsistently observed in functional (f)MRI studies of unilateral hand performance. Two factors limit the interpretation of these data. As the motor tasks differ qualitatively in these studies, it is conceivable that M1 contributions differ w...
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A human being’s motor cortex becomes engaged when he or she performs specific motions. However, little is known about the relationship between the regions in the motor cortex. Neuroscience has not reached consensus over how motions for specific joints relate, or how engagement changes when a motion is performed more forcefully. We obtained fMRI BOLD scans of subjects’ motor cortices as they per...
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ژورنال
عنوان ژورنال: Current Biology
سال: 2003
ISSN: 0960-9822
DOI: 10.1016/s0960-9822(03)00453-6