Skip to main content
. Author manuscript; available in PMC: 2013 May 15.
Published in final edited form as: Biol Psychiatry. 2012 Feb 2;71(10):846–854. doi: 10.1016/j.biopsych.2011.12.019

Figure 6. Dopamine peak amplitude to unexpected and earned reward delivery.

Figure 6

Prior to the lever-pressing session at test, rats were given 3 free reward deliveries. The dopamine release induced by these unexpected reward deliveries is compared to that induced by delivery of a reward earned by completing the action sequence. Gray bars represent rats with no training on the full action sequence prior to test, red bars show rats with 5 days of sequence training prior to test and blue bars present rats with 10 days of sequence training prior to test. Error bars indicate +1 standard error of the mean. *= p<0.05.