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. Author manuscript; available in PMC: 2014 Sep 25.
Published in final edited form as: J Hand Surg Am. 2013 Mar;38(3):478–487. doi: 10.1016/j.jhsa.2012.12.018

Figure 4.

Figure 4

A Averaged blood oxygen level– dependent fMRI images in slice 3 across control, injury, and repair groups after left median nerve stimulation. Positive (orange) blood oxygen level– dependent activation signals are seen in the forelimb region of the primary somatosensory cortex (S1FL). Note diminished blood oxygen level– dependent signal in the repair group at 0 months associated with C7 donation, with recovery by 3 months (red circle). B Averaged blood oxygen level– dependent fMRI images in slice 3 across control, injury, and repair groups after right median nerve stimulation. Positive (orange) activation signals are again seen in S1FL. Note partial recovery of blood oxygen level– dependent signal in the repair group in the ipsilateral S1FL at 3 months and progression to the contralateral S1FL at 5 months.