Abstract
Using glass-capillary microelectrodes, receptor potentials and nerve impulses were recorded from single olfactory units on the antennae of some coleoptera and lepidoptera. These units proved to be the receptor cell endings of sensilla basiconica. Qualitative as well as quantitative differences of responses from single olfactory units might be sufficient for the central-nervous-system to discriminate a rather large number of different odors.
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