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. Author manuscript; available in PMC: 2008 Feb 1.
Published in final edited form as: Biol Psychol. 2006 Oct 12;74(2):174–184. doi: 10.1016/j.biopsycho.2005.08.008

Figure 1.

Figure 1

Partial correlations between changes in heart rate and changes in RSA and PEP during reward tasks. The top panels indicate the independent effects of RSA reactivity on heart rate, controlling for PEP reactivity. The bottom panels indicate the independent effects of PEP reactivity on heart rate, controlling for RSA reactivity. Negative correlations are indicated by bars rising above the x-axis because they represent positive chronotropic effects for both RSA and PEP. RSA = respiratory sinus arrhythmia; PEP = preejection period; CD = conduct disorder; ADHD = attention-deficit/hyperactivity disorder; ODD = oppositional defiant disorder. *p<.05, **p ≤ .01.