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Multisensory integration and motor resonance in the primary motor cortex
CortexHumans are endowed with a motor system that resonates to speech sounds, but whether concurrent visual information from lip movements can improve speech perception at a motor level through multisensory integration mechanisms remains unknown. Therefore, the aim of the study was to explore behavioral and neurophysiological correlates of multisensory ...
Serena Giurgola +4 more
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Primary motor cortex is involved in bimanual coordination
Nature, 1998Many voluntary movements involve coordination between the limbs. However, there have been very few attempts to study the neuronal mechanisms that mediate this coordination. Here we have studied the activity of cortical neurons while monkeys performed tasks that required coordination between the two arms.
Opher Donchin +4 more
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Archives of Physical Medicine and Rehabilitation, 2005
To show cortical reorganization in hemiparetic patients with a primary motor cortex (M1) infarct including the precentral knob by using functional magnetic resonance imaging (fMRI).Case-control.Outpatient clinics in the rehabilitation department of a university hospital.Two stroke patients and 20 control subjects.By using fMRI, we evaluated the hand ...
Dong Kyu Lee +5 more
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To show cortical reorganization in hemiparetic patients with a primary motor cortex (M1) infarct including the precentral knob by using functional magnetic resonance imaging (fMRI).Case-control.Outpatient clinics in the rehabilitation department of a university hospital.Two stroke patients and 20 control subjects.By using fMRI, we evaluated the hand ...
Dong Kyu Lee +5 more
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New Views of the Primary Motor Cortex
The Neuroscientist, 2000For 100 years, from the 1870s to the 1970s, somatotopic organization was considered the hallmark of the primary motor cortex (M1). M1 neurons were viewed as upper motor neurons, implying that their organization and function were upstream versions of the spinal motoneurons to which they project.
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Primary motor cortex disinhibition during motor skill learning
Journal of Neurophysiology, 2014Motor learning requires practice over a period of time and depends on brain plasticity, yet even for relatively simple movements, there are multiple practice strategies that can be used for skill acquisition. We investigated the role of intracortical inhibition in the primary motor cortex (M1) during motor skill learning.
James P. Coxon +2 more
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Constraints on Somatotopic Organization in the Primary Motor Cortex
Journal of Neurophysiology, 2001Since the 1870s, the primary motor cortex (M1) has been known to have a somatotopic organization, with different regions of cortex participating in control of face, arm, and leg movements. Through the middle of the 20th century, it seemed possible that the principle of somatotopic organization extended to the detailed representation of different body ...
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Effects of motor activity on the organization of primary somatosensory cortex
NeuroReport, 2006Recent studies have shown that adaptation of representational maps within the primary somatosensory cortex can be induced by task-related motor activity. Here, we explore the relationship between the complexity of the motor task and the extent of task-specific adaptation within the primary somatosensory cortex.
A. D. Wühle +2 more
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Primary writing tremor: motor cortex reorganisation and disinhibition
Journal of Clinical Neuroscience, 2005Primary writing tremor (PWT) is a task-specific tremor of uncertain origin. There has been debate as to whether PWT represents a variant of essential tremor or a tremulous form of focal dystonia related to writer's cramp. In writer's cramp there is evidence of changes in intracortical inhibition (ICI), as well as cortical motor reorganisation.To study ...
Byrnes, M.L. +4 more
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Plasticity in the Motor Network Following Primary Motor Cortex Lesion
2013The behavioral deficits following stroke are particularly evident in the fine control of force, movement, and posture of the arm and hand. However, functional recovery continues in the weeks and months after the initial lesion. Various animal models of stroke have been used to investigate the mechanisms involved with this recovery.
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