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This is a Quantitative Study study.

October 27, 2025Experimental PhysiologyOpen Access

Correlated amplitudes of potentials evoked in homologous muscles by magnetic stimulation reveal positive covariation of corticospinal output

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Positive covariation exists in motor evoked potentials between homologous muscles.
In a sample of 205 participants, amplitude correlation between stimuli was observed.
Analysis relied on electromyographic activity in target muscles prior to stimulation.
Findings support the notion of shared excitability in corticospinal projections from both cerebral hemispheres.

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Analysis correlates motor evoked potentials in upper limb homologous muscles, suggesting positive covariation in corticospinal output.

Richard G. Carson (2025) studied this question.

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