FIGURE 3.

Differential uptake of ¹⁸F-FDG in brain areas associated to formalin-induced nociceptive stimulus. The different brain areas are presented bellow x axis. The definition of contra or ipsilateral was made in reference to the right paw where formalin or PBS was administered. Bars represent mean+S.E.M. of the S.U.V. values (N = 4 and N = 6, PBS and formalin groups, respectively) (N = 4 and N = 6, PBS and formalin groups, respectively. Repeated-measures ANOVAs with Fisher’s post hoc tests). WM, white mater; GM Gy mater; PAG periaqueductal gray.