Figure 3

The effect of stimulus intensity on intracortical inhibition of primary motor cortex. TMS was performed with a focal suprathreshold stimulation over the motor cortex while electromyographic recordings were taken from the contralateral FDI muscle during voluntary tonic contraction. Silent period duration at different suprathreshold intensities for (A) the right and (B) left hemisphere for the control and patient groups in gray and black columns, respectively. White and gray columns show the silent period duration at the three intensities for the control and patient groups, respectively. (C) Silent period duration at the three intensities for the patient M.G., (D) S.G., and (E) S.Pe. Error bars indicate SEM. White (100%), gray (110%) and black (130%) columns show SP duration for the three different suprathreshold intensities. RH: right hemisphere; LH: left hemisphere.