Fig. 3.

Relationship between chemical concentration and response in interneurons. Summaries of the mean duration of depolarization evoked in response to a concentration series of four test chemicals are shown. A, Responses to NaCl.B, Responses to sucrose. C, Responses to NHT. D, Responses to lysine glutamate. In general, the greater the concentration of a test chemical, the greater the duration of response elicited in an interneuron. Each linerepresents data from a different interneuron, with solid lines indicating significant correlations. Data detailing the number of droplets applied and the significance of the correlations between concentration and duration of response are given for each interneuron in Table 1. Arrows indicate responses to water alone.