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. Author manuscript; available in PMC: 2015 Jun 1.
Published in final edited form as: Behav Brain Res. 2014 Mar 11;266:119–130. doi: 10.1016/j.bbr.2014.03.004

Fig. 4. Number of magazine entries in both groups of rats and the impact of unpaired high uncertainty on lever pressing.

Fig. 4

A: Magazine entries during the presentation of all CS+ levers across varying levels of reward uncertainty. The initially high uncertainty group started with high uncertainty (d1-8) and ended with low uncertainty (d17-24), while the initially low uncertainty group started with low uncertainty (d1-8) and ended with high uncertainty (d17-24). Circles represent reward contingencies in each training block. B: Lever presses for all CS+ levers across varying levels of reward uncertainty, including a group of animals exposed to high uncertainty conditions, but where CS+ presentations were unpaired from UCS delivery.