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Figure 5


Fig. 5. (A,B) Dose–response relationships for two Type I interneurons to different concentrations of tetramin delivered, respectively, in the P->D flow direction (squares) and the D->P flow direction (crosses). Each point is the mean ± 1 s.e.m. of spike responses to five odorant presentations. Linear fits of the responses of the neuron in A to odorant flows in the two directions are described by the equations (P->D), y=13.4(logx)+53.4, R=0.97; (D->P), y=14.8(logx)+57.5, R=0.98. Linear fits of the responses of the neuron in B to odorant flows are described by (P->D), y=5.6(logx)+16.9, R=0.84, (D->P), y=4.3(logx)+16.7, R=0.86. Paired t-test statistics for each of the means in the two plots indicate that, with one marginal exception (A, 0.1 relative concentration), the plots for the respective flow directions in each cell are not significantly different from each other.