Figure 1.

The four recording sites were the forearm (medial forearm site three-fourths of the distance from the ulnar epicondyle to the pisiform bone), proximal leg (5 cm distal to the fibular head), distal leg (5 cm proximal to the medial malleolus), and the foot (over the extensor digitorum brevis).

Chen et al. BMC Neuroscience 2012 13:62   doi:10.1186/1471-2202-13-62
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