Objective: To attempt to replicate previous findings that showed an influence of transcranial magnetic stimulation of the cortical motor areas on the selection of motor programmes on the contralateral side.
Methods: Healthy volunteers were asked to choose to make a right or left index finger extension movement freely after hearing the click produced by transcranial magnetic stimulation. The stimulation was applied to the motor areas (test), including the motor cortex, vertex, and prefrontal cortex, and in the air (control).
Results: There was no preference for choosing the hand contralateral to the stimulation site, in either test or control trials.
Conclusions: Previous results could not be reproduced. Simple magnetic stimulation of the motor areas is insufficient to affect voluntary selection of movement.
- transcranial magnetic stimulation
- motor cortex
- movement selection
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Competing interests: none declared