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. Author manuscript; available in PMC: 2012 Aug 1.
Published in final edited form as: Behav Neurosci. 2011 Aug;125(4):604–612. doi: 10.1037/a0024325

Figure 5.

Figure 5

Four panels show mean and standard error of changes in interbeat interval from baseline during unconditioned stimulus testing (Pretest, Post Test 1, Post Test 2) as a function of whether testing took place near the eye (Test Eye, top panels) or on the back (Test Back, bottom panels) during the first 1000 ms (left panels) or last 1000 ms (right panels) of the observation interval after unconditioned stimulus onset. Given the equivalent terminal levels of HR conditioning shown in Figure 1, the US test data were collapsed across the location of the US used during HR conditioning.