Electroantennogram (EAG)

Measuring insect olfactory responses to different odor stimuli such as a pheromone, plant volatile, or repellent
Electrophysiology is a technique that quantitatively assesses the response of the olfactory system to odour stimuli. At Gaiagen, we measure these responses with our in-house Electroantennogram.

Electroantennography is usually performed by removing an antenna from the insect and inserting two chloride silver wires onto the two ends, then amplifying the voltage between them while applying an odour puff to see a deflection.
We apply this technique to screen insect pheromones by examining the responses to fractions of a compound mixture separated using gas chromatography.

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