With 20 Hz vibration, thresholds at the sole of the foot obtained
with different probe sizes were generally not correlated with each
other, but thresholds at the thenar eminence with 1 mm, 3 mm,
6 mm and 10 mm probes were correlated with each other, and
thresholds at the fingertip with 1 mm, 3 mm and 6 mm probes were
correlated with each other (Table 4). With 160 Hz vibration, thresholds
obtained with 1 mm, 3 mm, 6 mm, and 10 mm probes were
generally correlated with each other at each of the six locations