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Tongue dimensional changes under stimulation of the hypoglossal nerve trunk (HGT), its medial (HGM) and lateral (HGL) branches in sham (A) and reduction (B) groups. Note that the bars for AW during HGT and HGL stimulation (A) are intentionally left blank because the deformational direction varied across animals (see text for the details). Asterisks by the vertical bars indicate significant difference between the two groups. *P < 0.05; **P < 0.01. Refer to Figure 2 for other captions.
