Extensive training of elementary finger tapping movements changes the pattern of motor cortex excitability
| Autor: | Susan Koeneke, Ulf Ziemann, Kai Lutz, Uwe Herwig, Lutz Jäncke |
|---|---|
| Přispěvatelé: | University of Zurich, Koeneke, Susan |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Adult
Male medicine.medical_specialty Movement medicine.medical_treatment Pyramidal Tracts Action Potentials 610 Medicine & health Thumb Functional Laterality 050105 experimental psychology Fingers 03 medical and health sciences 0302 clinical medicine Physical medicine and rehabilitation Motor system medicine Humans Learning 0501 psychology and cognitive sciences Evoked potential Muscle Skeletal Abductor pollicis brevis muscle Neuronal Plasticity 10093 Institute of Psychology General Neuroscience 05 social sciences Motor Cortex 2800 General Neuroscience 11359 Institute for Regenerative Medicine (IREM) Evoked Potentials Motor Transcranial Magnetic Stimulation Adductor pollicis muscle Transcranial magnetic stimulation medicine.anatomical_structure Motor Skills Finger tapping Female 150 Psychology Psychology Neuroscience 030217 neurology & neurosurgery Muscle Contraction Motor cortex |
| Zdroj: | Experimental brain research. Experimentelle Hirnforschung. Expérimentation cérébrale |
| Popis: | There is evidence of a strong capacity for functional and structural reorganization in the human motor system. However, past research has focused mainly on complex movement sequences over rather short training durations. In this study we investigated changes in corticospinal excitability associated with longer training of elementary, maximum-speed tapping movements. All participating subjects were consistent right-handers and were trained using either the right (experiment 1) or the left thumb (experiment 2). Transcranial magnetic stimulation was applied to obtain motor evoked potentials (MEPs) from the abductor pollicis brevis (APB) muscle of the right and the left hand before and after training. As a result of training, a significant increase was observed in tapping speed accompanied by increased MEPs, recorded from the trained APB muscle, following contralateral M1 stimulation. In the case of subdominant-hand training we additionally demonstrate increased MEP amplitudes evoked at the right APB (untrained hand) in the first training week. Enhanced corticospinal excitability associated with practice of elementary movements may constitute a necessary precursor for inducing plastic changes within the motor system. The involvement of the ipsilateral left M1 likely reflects the predominant role of the left M1 in the general control (modification) of simple motor parameters in right-handed subjects. |
| Databáze: | OpenAIRE |
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