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Figure 8


Fig. 8. Effects of forward and backward pairing trials and of non-associative control. (A,B) Summed responses of salivary neurones (SN1 and SN2) to peppermint (hatched bars) or vanilla (shaded bars) odour before and at 1 min and 30 min after five sets of P+V- (A) or V+P- (B) forward-pairing trials. (C) Summed responses of SN1 and SN2 to odours before and at 1 min and 30 min after five sets of P+V- backward-pairing trials. (D) Summed responses of SN1 and SN2 to odours before and at 6 min and 35 min after five presentations of sucrose solution without pairing with odour (US alone). The responses are shown as means ± s.e.m. The results of statistical comparison are shown above the bars (NS, P>0.05, *P<0.05, **P<0.01, ***P<0.001; t-test).





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