Diaphragmatic silent period to transcranial magnetic cortical stimulation for assessing cortical motor control of the diaphragm

2002 ◽  
Vol 146 (3) ◽  
pp. 404-409 ◽  
Author(s):  
Jean-Pascal Lefaucheur ◽  
Frédéric Lofaso
Keyword(s):  
Motor Control ◽  
Silent Period ◽  
Cortical Stimulation ◽  
Cortical Motor ◽  
Transcranial Magnetic Cortical Stimulation

Stereotactic pallidotomy lengthens the transcranial magnetic cortical stimulation silent period in Parkinson's disease

Neurology ◽  
1997 ◽  
Vol 49 (5) ◽  
pp. 1278-1283 ◽  
Author(s):  
M. S. Young ◽  
W. J. Triggs ◽  
D. Bowers ◽  
M. Greer ◽  
W. A. Friedman
Keyword(s):  
Parkinson’S Disease ◽  
Parkinson's Disease ◽  
Globus Pallidus ◽  
Motor Evoked Potential ◽  
Silent Period ◽  
Cortical Stimulation ◽  
Abductor Pollicis Brevis ◽  
Inhibitory Circuits ◽  
Before And After ◽  
Transcranial Magnetic Cortical Stimulation

We compared the duration of the EMG cortical stimulation silent period(CSSP) elicited in abductor pollicis brevis using transcranial magnetic stimulation (TMS) before and after stereotactic unilateral globus pallidus internus pallidotomy (PAL) in 12 patients with Parkinson's disease. We used TMS stimulus intensities of 200, 150, 120, and 100% of motor evoked potential(MEP) threshold before and after (86 ± 25 days) PAL. PAL increased CSSP duration at stimulus intensities of 200% of MEP threshold in the hand contralateral to the stereotactic lesion. In a subset of five patients able to remain at rest during pre-PAL testing sessions, PAL decreased the resting MEP/M-wave area ratio in the hand contralateral to the lesion at a stimulus intensity of 120% of MEP threshold. PAL did not significantly modify the effects of TMS in the hand ipsilateral to the globus pallidus lesion. The results suggest that PAL improves the function of cortical motor inhibitory circuits in Parkinson's disease.

The muscle silent period following transcranial magnetic cortical stimulation

1993 ◽  
Vol 114 (2) ◽  
pp. 216-222 ◽  
Author(s):  
S.A. Wilson ◽  
R.J. Lockwood ◽  
G.W. Thickbroom ◽  
F.L. Mastaglia
Keyword(s):  
Silent Period ◽  
Cortical Stimulation ◽  
Transcranial Magnetic Cortical Stimulation

Cortical Motor Control

2016 ◽  
pp. 1315-1336
Author(s):  
R. Chris Miall
Keyword(s):  
Motor Control ◽  
Cortical Motor

Long Latency Reflexes and the Silent Period

2009 ◽  
pp. 543-550
Author(s):  
John N. Caviness
Keyword(s):  
Central Nervous System ◽  
Nervous System ◽  
Motor Control ◽  
Brain Stem ◽  
Silent Period ◽  
Complex Interplay ◽  
Long Latency ◽  
System P ◽  
The Central Nervous System ◽  
Long Latency Reflexes

LLRs and the silent period are EMG phenomena that reflect the complex interplay of spinal, brain stem, and cortical influences in motor control. These techniques have been applied to the study of disorders of motor control such as Parkinson’s disease, Huntington’s disease, and dystonia. Abnormalities of these reflexes may help to detect lesions of the central nervous system.

Cortical Motor Control

2013 ◽  
pp. 1187-1208 ◽  
Author(s):  
R. Chris Miall
Keyword(s):  
Motor Control ◽  
Cortical Motor

scholarly journals The role of the inferior parietal lobule in writer’s cramp

Brain ◽  
2020 ◽  
Vol 143 (6) ◽  
pp. 1766-1779 ◽  
Author(s):  
Shabbir Hussain I Merchant ◽  
Eleni Frangos ◽  
Jacob Parker ◽  
Megan Bradson ◽  
Tianxia Wu ◽  
...  
Keyword(s):  
Motor Control ◽  
Healthy Volunteers ◽  
Silent Period ◽  
Fine Motor ◽  
Inferior Parietal Lobule ◽  
Fine Motor Control ◽  
Writer’S Cramp ◽  
Writer's Cramp ◽  
Parietal Lobule

Abstract Humans have a distinguishing ability for fine motor control that is subserved by a highly evolved cortico-motor neuronal network. The acquisition of a particular motor skill involves a long series of practice movements, trial and error, adjustment and refinement. At the cortical level, this acquisition begins in the parieto-temporal sensory regions and is subsequently consolidated and stratified in the premotor-motor cortex. Task-specific dystonia can be viewed as a corruption or loss of motor control confined to a single motor skill. Using a multimodal experimental approach combining neuroimaging and non-invasive brain stimulation, we explored interactions between the principal nodes of the fine motor control network in patients with writer’s cramp and healthy matched controls. Patients and healthy volunteers underwent clinical assessment, diffusion-weighted MRI for tractography, and functional MRI during a finger tapping task. Activation maps from the task-functional MRI scans were used for target selection and neuro-navigation of the transcranial magnetic stimulation. Single- and double-pulse TMS evaluation included measurement of the input-output recruitment curve, cortical silent period, and amplitude of the motor evoked potentials conditioned by cortico-cortical interactions between premotor ventral (PMv)-motor cortex (M1), anterior inferior parietal lobule (aIPL)-M1, and dorsal inferior parietal lobule (dIPL)-M1 before and after inducing a long term depression-like plastic change to dIPL node with continuous theta-burst transcranial magnetic stimulation in a randomized, sham-controlled design. Baseline dIPL-M1 and aIPL-M1 cortico-cortical interactions were facilitatory and inhibitory, respectively, in healthy volunteers, whereas the interactions were converse and significantly different in writer’s cramp. Baseline PMv-M1 interactions were inhibitory and similar between the groups. The dIPL-PMv resting state functional connectivity was increased in patients compared to controls, but no differences in structural connectivity between the nodes were observed. Cortical silent period was significantly prolonged in writer’s cramp. Making a long term depression-like plastic change to dIPL node transformed the aIPL-M1 interaction to inhibitory (similar to healthy volunteers) and cancelled the PMv-M1 inhibition only in the writer’s cramp group. These findings suggest that the parietal multimodal sensory association region could have an aberrant downstream influence on the fine motor control network in writer’s cramp, which could be artificially restored to its normal function.

Cortical motor neuron excitability during cutaneous silent period

1998 ◽  
Vol 109 (4) ◽  
pp. 364-368 ◽  
Author(s):  
Kazuo Kaneko ◽  
Shinya Kawai ◽  
Toshihiko Taguchi ◽  
Yasunori Fuchigami ◽  
Hiroshi Yonemura ◽  
...  
Keyword(s):  
Motor Neuron ◽  
Silent Period ◽  
Cortical Motor ◽  
Neuron Excitability ◽  
Cutaneous Silent Period ◽  
Motor Neuron Excitability

PROLONGATION OF THE SILENT PERIOD AFTER CORTICAL STIMULATION IN A PATIENT WITH HEMIDYSTONIA

1993 ◽  
Vol 10 (2) ◽  
pp. 241
Author(s):  
R. Bruggeman ◽  
C. van der Linden ◽  
A. A. Leis
Keyword(s):  
Silent Period ◽  
Cortical Stimulation
Sign in / Sign up

Export Citation Format

Share Document