Hemodynamic Response of the Supplementary Motor Area during Locomotor Tasks with Upright versus Horizontal Postures in Humans

Figure 2

Experimental setup. (a) Images of three locomotor tasks during hand-knee quadrupedal crawling (HKQuad) (A), upright quadrupedalism (UpQuad) using bilateral Lofstrand crutches (B), and usual upright bipedalism (UpBi) (C). (b) The conceptual framework for the task design. Differences in the height of the center of gravity distinguished between HKQuad and the other two tasks (UpQuad and UpBi) (left). The difference in the number of stepping limbs that encompassed the support base distinguished between UpBi and the other two tasks (HKQuad and UpQuad) (right).