Abstract
We investigated the excitation levels of spinal motoneurons of the upper limbs during application of plantar vibration stimuli by recording F waves from 11 healthy men aged 23.5 ± 3.2 years. We recorded F-waves from the thenar muscle of their upper limbs before, during, and after application of plantar vibration stimuli. F wave significantly increased during application of the plantar vibration stimuli and tended to decrease after their removal. These findings indicate that in healthy subjects, upper extremity motoneuron excitability tends to increase during application of plantar vibration stimuli and to decrease after their removal.
