0000000000247128

AUTHOR

Jose R. Romero

showing 2 related works from this author

Subthreshold low frequency repetitive transcranial magnetic stimulation selectively decreases facilitation in the motor cortex

2002

Objective: To investigate the modulatory effect of a subthreshold low frequency repetitive transcranial magnetic stimulation (rTMS) train on motor cortex excitability. Methods: The study consisted of two separate experiments. Subjects received a 10 min long subthreshold 1Hz rTMS train. In the first experiment, (single pulse paradigm), cortical excitability was assessed by measuring the amplitude of motor evoked potentials (MEPs) before and after the rTMS train. In the second experiment, a paired pulse paradigm was employed. Results: Corticospinal excitability, as measured by the MEP amplitude, was reduced by the rTMS train (experiment 1), with a significant effect lasting for about 10 min a…

AdultMaleRepetitive transcranial magnetic stimulationmedicine.medical_treatmentHuman motor cortexElectromyographyElectromagnetic FieldsPhysiology (medical)medicineHumansModulationmedicine.diagnostic_testElectromyographyPulse (signal processing)Subthreshold conductionmusculoskeletal neural and ocular physiologyMotor CortexMotor controlCortical excitabilityMiddle AgedEvoked Potentials MotorSensory SystemsIntra-cortical circuitsTranscranial magnetic stimulationElectrophysiologymedicine.anatomical_structurenervous systemNeurologyFacilitationFemaleNeurology (clinical)Nerve NetPsychologyNeuroscienceMotor cortexClinical Neurophysiology
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Modulation of input–output curves by low and high frequency repetitive transcranial magnetic stimulation of the motor cortex

2002

Objectives: Exploring the modulatory effects of different frequencies of repetitive transcranial magnetic stimulation (rTMS) on the excitability of the motor cortex as measured by the input-output curve technique (I-O curve). Methods: Sixteen healthy subjects participated in this experiment. On two different sessions, conducted 1 week apart, rTMS was applied either at a frequency of 20 or 1Hz at 90% of individual motor threshold (MT) for a total of 1600 pulses each. Before and after rTMS, the cortical excitability was assessed by measuring MT and the size of motor evoked potentials (MEPs) collected at different intensities of stimulation. Results: The analysis on the whole population showed…

AdultMaleRepetitive transcranial magnetic stimulationmedicine.medical_treatmentPopulationCentral nervous systemStimulationbehavioral disciplines and activitiesPhysiology (medical)Modulation (music)medicineHumanseducationCerebral Cortexeducation.field_of_studyElectromyographyMotor CortexMotor controlCortical excitabilityInput-output curveEvoked Potentials MotorTranscranial Magnetic StimulationElectric StimulationSensory SystemsTranscranial magnetic stimulationElectrophysiologymedicine.anatomical_structureNeurologyFemaleNeurology (clinical)PsychologyNeuroscienceMotor cortexClinical Neurophysiology
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