Results 261 to 270 of about 379,044 (301)

Ipsilateral involvement of primary motor cortex during motor imagery

European Journal of Neuroscience, 2000
AbstractTo investigate whether motor imagery involves ipsilateral cortical regions, we studied haemodynamic changes in portions of the motor cortex of 14 right‐handed volunteers during actual motor performance (MP) and kinesthetic motor imagery (MI) of simple sequences of unilateral left or right finger movements, using functional magnetic resonance ...
PORRO, Carlo Adolfo, Cettolo, V., Francescato, M. P., BARALDI, Patrizia   +3 more
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Early consolidation in human primary motor cortex

Nature, 2002
Behavioural studies indicate that a newly acquired motor skill is rapidly consolidated from an initially unstable state to a more stable state, whereas neuroimaging studies demonstrate that the brain engages new regions for performance of the task as a result of this consolidation.
Wolf, Muellbacher, Ulf, Ziemann, Joerg, Wissel, Nguyet, Dang, Markus, Kofler, Stefano, Facchini, Babak, Boroojerdi, Werner, Poewe, Mark, Hallett   +8 more
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Somatotopy in the ipsilateral primary motor cortex

NeuroReport, 2002
Conflicting reports exist about the occurrence, reliability and localization of activation in the ipsilateral primary motor cortex (M1). We re-examined this issue with functional magnetic resonance imaging in 12 volunteers performing right hand, finger, wrist, elbow, foot and tongue movements in two separate sessions.
Hatem, Alkadhi, Gerard R, Crelier, Sabina Hotz, Boendermaker, Marie-Claude, Hepp-Reymond, Spyros S, Kollias   +4 more
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Postnatal Development of the Motor Representation in Primary Motor Cortex

Journal of Neurophysiology, 2000
The purpose of this study was to examine when the muscles and joints of the forelimb become represented in primary motor cortex (M1) during postnatal life and how local representation patterns change. We examined these questions in cats that were anesthetized (45–90 days, n = 14; adults, n = 3) and awake ( n = 4; 52–86 days).
S, Chakrabarty, J H, Martin
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Acute aerobic exercise modulates primary motor cortex inhibition

Experimental Brain Research, 2016
Aerobic exercise can enhance neuroplasticity although presently the neural mechanisms underpinning these benefits remain unclear. One possible mechanism is through effects on primary motor cortex (M1) function via down-regulation of the inhibitory neurotransmitter gamma-aminobutyric acid (GABA).
Ronan A, Mooney, James P, Coxon, John, Cirillo, Helen, Glenny, Nicholas, Gant, Winston D, Byblow   +5 more
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Theta‐burst stimulation over primary motor cortex degrades early motor learning

European Journal of Neuroscience, 2010
AbstractTheta‐burst stimulation (TBS) is currently used for inducing long‐lasting changes in primary motor cortex (M1) excitability. More information is needed on how M1 is involved in early motor learning (practice‐related improvement in motor performance, motor retention and motor consolidation).
Ennio Iezzi, SUPPA, ANTONIO, CONTE, ANTONELLA, AGOSTINO, Rocco, NARDELLA, ANDREA, BERARDELLI, Alfredo   +5 more
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Arterial vascularization of primary motor cortex (precentral gyrus)

Surgical Neurology, 2005
The precentral gyrus (PG) is the primary motor area and is one of the most eloquent brain regions of neurosurgical interest. Although the arterial supply to the PG is generally known, contributions from different arterial branches such as the anterior cerebral artery (ACA), posterior cerebral artery (PCA), and middle cerebral artery (MCA) have not been
Hasan Caglar, Ugur, Gokmen, Kahilogullari, Ernesto, Coscarella, Agahan, Unlu, Ibrahim, Tekdemir, Jacques J, Morcos, Alaittin, Elhan, Mustafa K, Baskaya   +7 more
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Primary motor cortex is involved in bimanual coordination

Nature, 1998
Many 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.
O, Donchin, A, Gribova, O, Steinberg, H, Bergman, E, Vaadia   +4 more
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Primary writing tremor: motor cortex reorganisation and disinhibition

Journal of Clinical Neuroscience, 2005
Primary 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., Mastaglia, F.L., Walters, S.E., Archer, S-A.R., Thickbroom, G.W.   +4 more
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Cortical Reorganization of Hand Motor Function to Primary Sensory Cortex in Hemiparetic Patients With a Primary Motor Cortex Infarct

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 ...
Sung Ho, Jang, Sang Ho, Ahn, Dong Suk, Yang, Dong Kyu, Lee, Dong Kyu, Kim, Soo Min, Son   +5 more
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