Fig. 4. Demonstration that sucrose and glucose stimulate different taste cells in the lateral styloconic sensillum. In panel A, we show representative neural responses of a lateral styloconic sensillum to sucrose (200 mmol l^–1), glucose (200 mmol l^–1) and the binary mixture of both. We provide the initial 250 ms of response. Below each trace, we indicate dominant spikes with a filled circle, and non-dominant spikes with an arrowhead; see text for a description of how we distinguished these two classes of spikes. We dissolved the carbohydrates in a 100 mmol^–1 KCl solution. In panels B and C, we show the number of dominant and non-dominant spikes elicited by each of the taste stimuli. Each bar indicates mean ± s.e.m.; N=12 sensilla (each from a different caterpillar). We compare the means within each panel with a post-hoc test (Tukey's HSD test); different letters (a or b) above the bars within a panel indicate means that differ significantly from one another (P0.05).