Fig. 2From: Tactile skin stimulation increases dopamine release in the nucleus accumbens in ratsDA release in the NAc in response to bilateral stroking of the back in the anesthetized animals. Ordinates response magnitude is expressed as a percentage of the pre-stimulus control value. Abscissa 0 the onset of stimulation. The data are mean ± SD. Horizontal bar the 5-min stimulus period. a Sham experiments, b bilateral stroking of the back, c bilateral stroking of the back after VTA lesioning. *p < 0.05, **p < 0.01, compared with the pre-stimulus control value. n = 6Back to article page