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. 2000 Dec 12;97(26):14703–14708. doi: 10.1073/pnas.250348997

Figure 2.

Figure 2

Cortical activation during RZ and non-RZ stimulation in SCI subjects. (A) Coronal oblique sections through the PoCG in Subject 2. (Left) During stimulation of a non-RZ region on the right forearm, activation was observed in the central PoCG but not in the medial PoCG. Green boxes demarcate activated regions within the PoCG. (Right) During stimulation of the RZ region on the right forearm, the subject perceived contact on the forearm and on the ipsilateral chest, and activation was observed in the medial and central PoCG. (B) (Left) During stimulation on a non-RZ region on the left forearm, activation was observed in the central PoCG but not in the medial PoCG. (Right) During stimulation on the RZ region on the left forearm, activation was observed in the central PoCG, and on the border and within the medial PoCG. (C) Axial sections through the PoCG in three SCI subjects. (Left) In Subject 2, stimulation of the right forearm non-RZ region evoked activity (blue dot) in the hand area of the PoCG, the region posterior to the convexity of the central sulcus. Stimulation of the right forearm RZ evoked activity in the hand area, and in a more medial region (orange dots). Yellow lines indicate the central sulcus. (Center and Right) Activation during stimulation of non-RZ forearm regions in Subject 3 (T3-T4 level SCI; center frame), and in Subject 4 (T7-T8 level SCI; right frame) was localized to the hand area of the PoCG (blue dots).