Fig. 1From: Serotonin release in the central nucleus of the amygdala in response to noxious and innocuous cutaneous stimulation in anesthetized rats5-HT release in the CeA in response to bilateral cutaneous stimulation of the back. Ordinates: response magnitude is expressed as a percentage (mean ± SD) of the prestimulus control value. Abscissa: 0 indicates the onset of stimulation. Horizontal bar indicates the 10-min stimulus period. a Baseline experiments. b Bilateral pinching of the back. c Bilateral stroking of the back. *p < 0.01 vs. prestimulus control values. n = 6Back to article page