Highlights • Selective stimulation of inputs to corticospinal neurons may be achieved by manipulating current direction and pulse duration.• Neural populations recruited by brief (30 μs) anterior–posterior currents exhibited the… Click to show full abstract
Highlights • Selective stimulation of inputs to corticospinal neurons may be achieved by manipulating current direction and pulse duration.• Neural populations recruited by brief (30 μs) anterior–posterior currents exhibited the greatest sensitivity to somatosensory input.• Pulse duration is an important determinant of what is activated with TMS in human motor cortex.
               
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