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Fig. 5. Demonstration that glucose and inositol stimulate the same taste cell in
the lateral styloconic sensillum. In panel A, we show representative neural
responses of a lateral styloconic sensillum to glucose (200 mmol
l–1), inositol (1 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=16 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
(P
0.05).
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