Erratum to: Time-dependent decreases in nucleus accumbens AMPA/NMDA ratio and incubation of sucrose craving in adolescent and adult rats

Erratum to: Psychopharmacology

DOI 10.1007/s00213-013-3294-3

In the published paper of Counotte et al., there was an error in figure 3H, obscuring the bars displaying the rectification index in adult rats. The authors apologize for this error and we reproduce the corrected figure 3 here.

Fig. 3.

AMPA/NMDA ratios in the nucleus accumbens core after 1-3 days or 3 weeks of abstinence from sucrose or water self-administration. (A) Mean±sem number of earned rewards in rats trained to self-administer water (left) or sucrose (right) during the training phase. Brains were taken after 1-3 days or 21 days of abstinence without testing for cue-induced reward seeking. (B) Schematic of a parasaggittal section through the nucleus accumbens core illustrating the relative placement of the stimulating electrode (bolt symbol) and recorded Neurobiotin-stained medium spiny neuron (inset) with respect to the forceps minor (fmi) and anterior commisure (aca). (C) Representative traces of medium spiny neurons held at +40 mV in the absence (both AMPA and NMDA) and presence (only AMPA) of the NMDAR antagonist AP5 in rats after 1-3 days of abstinence from self-administered water or sucrose at the three different age groups. Stimulation artifacts were removed for clarity. (D) Mean±sem AMPA/NMDA in NAc after 1-3 days of abstinence from self-administered water (white bars) or sucrose (black bars). The numbers indicate cells per group (n=4-6 rats per group). No more than 2 cells per rat were used. (E) Rectification index after 1-3 abstinence days. (F) Representative traces of medium spiny neurons after 3 weeks of abstinence from water or sucrose self-administration in the three different age groups. (G) Mean±sem AMPA/NMDA ratio in NAc MSNs after 21 days of abstinence. The numbers indicate cells per group (n=4-6 rats per group). No more than 2 cells per rat were used. (H) Rectification index after 21 abstinence days. * Different from the Water condition within each age group, p<0.05.