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Figure 3


Fig. 3. Conditioned taste aversion (CTA) following the one-trial conditioning procedure is resistant to extinction. (A) The feeding response to the sucrose conditioned stimulus (CS) before conditioning, after conditioning and after three extinction sessions for good (open circles; N=24) and poor (solid circles; N=26) performers. (B) As in A, except that carrot juice was used as the CS. There were 21 good performers and 29 poor performers. Extinction training consisted of presentation of only the CS. The CS was presented three times with a 10-min interval after the conditioning procedure (bars). All values are means ± s.e.m. The x axes are in a logarithmic scale. The differences between the feeding response of the good performers and that of the poor performers in both cases were observed for at least 24 h at *P<0.01 (Student's t-test), showing that the memory formed by the one-trial conditioning procedure is resistant to extinction.





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