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Transcraneal Magnetic Stimulation and TMS

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https://www.readbyqxmd.com/read/27730516/corticomuscular-coherence-a-novel-tool-to-assess-the-pyramidal-tract-dysfunction-in-spinocerebellar-ataxia-type-2
#1
Luis Velázquez-Pérez, Johannes Tünnerhoff, Roberto Rodríguez-Labrada, Reidenis Torres-Vega, Paolo Belardinelli, Jacqueline Medrano-Montero, Arnoy Peña-Acosta, Nalia Canales-Ochoa, Yaimeé Vázquez-Mojena, Yanetza González-Zaldivar, Georg Auburger, Ulf Ziemann
Clinical signs of corticospinal tract dysfunction are a common feature of spinocerebellar ataxia type 2 (SCA2) patients. The objective of this study is to assess dysfunction of the corticospinal tract in SCA2 using corticomuscular coherence. Testing corticomuscular coherence and rating of ataxia severity and non-ataxia symptoms were performed in 19 SCA2 patients and 24 age-matched controls. Central motor conduction times (CMCT) to upper and lower right limbs were obtained for the SCA2 group using Transcraneal magnetic stimulation (TMS)...
April 2017: Cerebellum
https://www.readbyqxmd.com/read/27684369/testing-the-role-of-dorsal-premotor-cortex-in-auditory-motor-association-learning-using-transcranical-magnetic-stimulation-tms
#2
Carlotta Lega, Marianne A Stephan, Robert J Zatorre, Virginia Penhune
Interactions between the auditory and the motor systems are critical in music as well as in other domains, such as speech. The premotor cortex, specifically the dorsal premotor cortex (dPMC), seems to play a key role in auditory-motor integration, and in mapping the association between a sound and the movement used to produce it. In the present studies we tested the causal role of the dPMC in learning and applying auditory-motor associations using 1 Hz repetitive Transcranical Magnetic Stimulation (rTMS). In this paradigm, non-musicians learn a set of auditory-motor associations through melody training in two contexts: first when the sound to key-press mapping was in a conventional sequential order (low to high tones mapped onto keys from left to right), and then when it was in a novel scrambled order...
2016: PloS One
https://www.readbyqxmd.com/read/26937285/a-tms-investigation-on-the-role-of-the-cerebellum-in-pitch-and-timbre-discrimination
#3
Carlotta Lega, Tomaso Vecchi, Egidio D'Angelo, Zaira Cattaneo
BACKGROUND: Growing neuroimaging and clinical evidence suggests that the cerebellum plays a critical role in perception. In the auditory domain, the cerebellum seems to be important in different aspects of music and sound processing. Here we investigated the possible causal role of the cerebellum in two auditory tasks, a pitch discrimination and a timbre discrimination task. Specifically, participants performed a pitch and a timbre discrimination task prior and after receiving offline low frequency transcranical magnetic stimulation (TMS) over their (right) cerebellum...
2016: Cerebellum & Ataxias
https://www.readbyqxmd.com/read/21921503/-multidimensional-neuroimaging-approach-for-studying-brain-network
#4
Takashi Hanakawa
Here we propose multidimensional non-invasive imaging to understand the functional anatomy of neural circuits of the human brain. The multidimensional network imaging technique currently employs anatomical, functional and evoked connectivity imaging in various combinations. The anatomical and functional connectivity imaging can be achieved by the analysis of diffusion-weighted and functional magnetic resonance imaging (fMRI), respectively. New analysis techniques such as probabilistic diffusion tractography and tract-based statistics have refined the anatomical connectivity imaging, especially in combination with fMRI for setting up regions-of-interest...
November 2010: Rinshō Shinkeigaku, Clinical Neurology
https://www.readbyqxmd.com/read/17176666/influence-of-transcranial-magnetic-stimulation-on-spike-wave-discharges-in-a-genetic-model-of-absence-epilepsy
#5
Leonid S Godlevsky, Evgeniy V Kobolev, Egidius L J M van Luijtelaar, Antony M L Coenen, Konstantin I Stepanenko, Igor V Smirnov
Transcranial magnetic stimulation (TMS) impulses, (0.5 Hz, 3 impulses) were presented at threshold intensity to male WAG/Rij rats. One group received stimuli, which involved motor responses of hindlimbs, rats of the second group received sham stimulation. Electrocorticograms (ECoG) were recorded before and up to 2 hr from the moment of transcranial magnetic stimulation. It was established that such stimulation engendered a reduction of spike-wave discharge (SWD) bursts duration. This effect was most pronounced in 30 min from the moment of cessation of stimulation, when a decrease of 31...
December 2006: Indian Journal of Experimental Biology
https://www.readbyqxmd.com/read/10479033/topographical-differences-in-the-developmental-profile-of-central-motor-conduction-time
#6
A Nezu, S Kimura, S Takeshita
OBJECTIVES: To study the topographical difference in the developmental profile of the central motor conduction time (CMCT) in upper extremity muscles, electromyographic (EMG) responses to transcranical magnetic stimulation (TMS) were examined in the first dorsal interosseous, extensor carpi radialis (ECR), biceps (BCP), and deltoid (DT) muscles of 25 neurologically normal subjects aged from 2 to 26 years. METHODS: The motor cortex and cervical spinal roots were magnetically stimulated, and CMCT was measured as the onset latency difference between these EMG responses...
September 1999: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
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