0000000000843580

AUTHOR

Barbara Marconi

showing 4 related works from this author

Changes in intracortical circuits of the human motor cortex following theta burst stimulation of the lateral cerebellum

2008

Objective: The cerebellum takes part in several motor functions through its influence on the motor cortex (M1). Here, we applied the theta burst stimulation (TBS) protocol, a novel form of repetitive Transcranial Magnetic Stimulation (rTMS) over the lateral cerebellum. The aim of this study was to test whether TBS of the lateral cerebellum could be able to modulate the excitability of the contralateral M1 in healthy subjects. Methods: Motor-evoked potentials (MEPs) amplitude, short intracortical inhibition (SICI), long intracortical inhibition (LICI) and short intracortical facilitation (SICF) were tested in the M1 before and after cerebellar continuous TBS (cTBS) or intermittent TBS (iTBS)…

MaleCerebellumTime FactorsTranscranial magnetic stimulation; Cerebellum; Intracortical inhibition; Connectivity; Theta burst stimulation; TMSmedicine.medical_treatmentCTBSFunctional LateralityIntracortical inhibitionCONNECTIVITYNeck MusclesTheta burst stimulationCerebellumTheta RhythmEvoked PotentialsYoung Adult; Theta Rhythm; Analysis of Variance; Neck Muscles; Differential Threshold; Humans; Cerebellum; Electromyography; Hand; Neural Inhibition; Electric Stimulation; Motor Cortex; Evoked Potentials Motor; Adult; Psychomotor Performance; Transcranial Magnetic Stimulation; Time Factors; Female; Functional Laterality; MaleMotor CortexTranscranial Magnetic StimulationSensory SystemsNeck Musclemedicine.anatomical_structureNeurologyMotorCerebellar cortexFemaleSettore MED/26 - NeurologiaPrimary motor cortexPsychologyHumanMotor cortexAdultTime FactorFRONTAL CORTEXDifferential ThresholdSensory systemNOYoung AdultPARIETAL CORTEXPhysiology (medical)medicineHumansAnalysis of VarianceSettore M-PSI/02 - Psicobiologia E Psicologia FisiologicaElectromyographyNeural InhibitionEvoked Potentials MotorHandElectric StimulationTranscranial magnetic stimulationElectrophysiologyCerebellum; Connectivity; Intracortical inhibition; Theta burst stimulation; TMS; Transcranial magnetic stimulation;TMSNeurology (clinical)NeurosciencePsychomotor Performance
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Long-term effects on motor cortical excitability induced by repeated muscle vibration during contraction in healthy subjects

2008

article i nfo Objective: The effects of a novel repeated muscle vibration intervention (rMV; 100 Hz, 90 min over 3 consecutive days) on corticomotor excitability were studied in healthy subjects. Methods: rMV was applied over the flexor carpi radialis (FCR) during voluntary contraction (experiment 1), during relaxation and during contraction without vibration (experiment 2). Focal transcranial magnetic stimulation (TMS) was applied before rMV and one hour, and one, two and three weeks after the last muscle vibration intervention. At each of these time points, we assessed the motor map area and volume in the FCR, extensor digitorum communis (EDC) and abductor digiti minimi (ADM). Short-inter…

MaleMotor disorderpaired-pulse tmsTime FactorsContraction (grammar)H-Reflex; Analysis of Variance; Humans; Electromyography; Neural Inhibition; Electric Stimulation; Muscle Skeletal; Motor Cortex; Brain Mapping; Vibration; Evoked Potentials Motor; Adult; Middle Aged; Muscle Contraction; Transcranial Magnetic Stimulation; Time Factors; Female; Malemedicine.medical_treatmentH-ReflextmsEvoked PotentialsBrain Mappingcortical plasticitySkeletalMiddle AgedTranscranial Magnetic Stimulationmedicine.anatomical_structureMotorNeurologyAnesthesiaMuscleFemaleSettore MED/26 - NeurologiaPrimary motor cortexmedicine.symptomPsychologyMuscle ContractionMotor cortexMuscle contractionAdultintracortical inhibitionVibrationNOmuscle vibrationmotor cortexNeuroplasticitymedicineHumansMuscle SkeletalAnalysis of VarianceneurorehabilitationElectromyographytms; muscle vibration; paired-pulse tms; neurorehabilitation; motor cortex; cortical plasticity; intracortical inhibitionNeural InhibitionEvoked Potentials Motormedicine.diseaseElectric Stimulationbody regionsTranscranial magnetic stimulationNeurology (clinical)NeuroscienceExtensor Digitorum Communis
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TMS activation of interhemispheric pathways between the posterior parietal cortex and the contralateral motor cortex

2009

Using a twin coil transcranial magnetic stimulation (tc-TMS) approach we have previously demonstrated that facilitation may be detected in the primary motor cortex (M1) following stimulation over the ipsilateral caudal intraparietal sulcus (cIPS). Here we tested the interhemispheric interactions between the IPS and the contralateral motor cortex (M1). We found that conditioning the right cIPS facilitated contralateral M1 when the conditioning stimulus had an intensity of 90% resting motor threshold (RMT) but not at 70% or 110% RMT. Facilitation was maximal when the interstimulus interval (ISI) between cIPS and M1 was 6 or 12 ms. These facilitatory effects were mediated by interactions with …

PhysiologyInterstimulus intervalmedicine.medical_treatmentParietal lobePosterior parietal cortexStimulationIntraparietal sulcusTranscranial magnetic stimulationmedicine.anatomical_structuremedicinePrimary motor cortexPsychologyNeuroscienceMotor cortexThe Journal of Physiology
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Hyperexcitability of parietal-motor functional connections in the intact left-hemisphere of patients with neglect

2008

Hemispatial neglect is common after unilateral brain damage, particularly to perisylvian structures in the right-hemisphere (RH). In this disabling syndrome, behaviour and awareness are biased away from the contralesional side of space towards the ipsilesional side. Theoretical accounts of this in terms of hemispheric rivalry have speculated that the intact left-hemisphere (LH) may become hyper-excitable after a RH lesion, due to release of inhibition from the damaged hemisphere. We tested this directly using a novel twin-coil transcranial magnetic stimulation (TMS) approach to measure excitability within the intact LH of neglect patients. This involved applying a conditioning TMS pulse ove…

Malegenetic structuresmedicine.medical_treatmentHumans; Stroke; Aged; Parietal Lobe; Motor Cortex; Evoked Potentials Motor; Adult; Neural Pathways; Middle Aged; Psychomotor Performance; Transcranial Magnetic Stimulation; Female; Functional Laterality; Male; Perceptual DisordersParietal cortexFunctional LateralityParietal LobeNeural PathwaysrTMSNeglect syndromeEvoked Potentialsmedia_commonConnectivityneglectParietal lobeMotor CortexCortical excitabilityMiddle AgedTranscranial Magnetic StimulationStrokemedicine.anatomical_structureMotorSettore MED/26 - NeurologiaFemalemedicine.symptomPerceptual DisorderPsychologyMotor cortexHumanAdultmedia_common.quotation_subjectPosterior parietal cortexArticleLateralization of brain functionrehabilitationNeglectNOPerceptual DisordersNeural PathwaymedicineHumansAgedHemispatial neglectEvoked Potentials MotorTranscranial magnetic stimulationneglect syndrome; transcranial magnetic stimulation; connectivity; rTMS; parietal cortex; cortical excitabilityUnilateral neglectTMSNeurology (clinical)NeurosciencePsychomotor Performance
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