Figure 2.

AON neurons can respond to multiple dissimilar mixtures. A, In vivo intracellular recording from an AON neuron shows that it was strongly excited by five mixtures (a1–a5). All five mixtures can induce depolarization of the membrane potential, accompanied by action potential discharge. Conventions are as in Figure 1. B, Quantification of net membrane potential change induced by each mixture during a 2 s odor presentation. *p < 0.05, **p < 0.01, Student's t test versus mineral oil (vehicle only).