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Rats' performance in the delayed discounting task. (A) Average preference for the large reward during the last 5 days of baseline performance. *p < 0.05, significant effect of the factor Delay (ANOVA). (B) Omission errors during task acquisition. @p < 0.05, significant Day × CIE exposure interaction (ANOVA); #p < 0.01, significant main effect of CIE exposure (ANOVA). The data are expressed as mean ± SEM.
