Fig. 6From: 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 conscious animals. Closed circles stroking experiment, open circles sham experiment. a Responses in habituated animals in which stroking stimulation was applied for 5–10 min every day for more than 2 weeks before the experiments began. b Responses in the naïve animals that did not receive stroking stimulation. n = 6. See Fig. 2 for other detailsBack to article page