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. Author manuscript; available in PMC: 2014 May 1.
Published in final edited form as: Psychopharmacology (Berl). 2013 Jul 9;230(4):509–524. doi: 10.1007/s00213-013-3178-6

Fig. 3. Progressive ratio testing in perinatal HFD and Chow offspring.

Fig. 3

Mean ± SEM number of rewards earned and mean last ratio completed (breakpoint) during progressive ratio testing. Data from the progressive ratio experiment was collected during days 44 – 48 of nicotine self-administration training using a dose of 0.015 mg/kg per infusion. * Represents significant differences between HFD and Chow diet animals (p<0.05). Abbreviations: HFD - high-fat diet.