P1-46. Types of F-wave waveform during rest in healthy subjects

We investigated types of F-waves during rest in healthy subjects. We measured F-waves from the thenar muscles on the nondominant side after stimulating the median nerve at the wrist in healthy subjects. We calculated the correlation coefficient for each type of F-wave using Microsoft Excel, as recommended by Suzuki et al. (2015), and identified F-waves as those with a value greater than or equal to 0.995. The number of different F-wave types was determined from the number of individual waveforms. The results showed that all F-wave types had different waveforms. Suzuki (2015) reported that F-wave waveform values increased with improvement in voluntary movement in patients with cerebrovascular disease. Therefore, we suggest that evaluation of the type of F-wave waveform be used as a component of motor function assessment.