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. Author manuscript; available in PMC: 2015 Jun 7.
Published in final edited form as: Neuroscience. 2012 Oct 2;227:119–133. doi: 10.1016/j.neuroscience.2012.09.054

Figure 4.

Figure 4

Fixed and variable tailshock have divergent effects on tactile, but not thermal, reactivity. Following baseline assessments of tactile and thermal responding, rats were administered 900 variable (filled circles) or 900 fixed (filled triangles) tailshocks, or no shock (Unshk). (A) Mean absolute tactile scores prior to treatment (Baseline, BL) and at 0, 60, 120, and 180 min after treatment. The left y-axis depicts linearized data while the right y-axis depicts the gram force equivalents. (B) Mean change from baseline tactile scores. (C) Absolute tail-flick latencies prior to and after shock treatment. (D) Mean change from tail-flick scores. The asterisks indicate statistical significance relative to unshocked (Unshk) controls (p < .05), and error bars depict ± SEM. The inset depicts the experimental design.