| Abstract: | The main problems associated with the delivery of a square waveodour pulse to the olfactory receptors are adsorption withinthe delivery system and partition within the olfactory epithelium.The instrument described here can overcome the problems of adsorptionand thus extend the range of usable stimuli. The principle involvedis simple. A nozzle through which odorized air continually flowsis moved rapidly to within a few millimetres of the olfactoryepithelium. Since there is no instrumental surface in contactwith a changing odour concentration, the problems of adsorptionare eliminated. Artifacts caused by the movement of the nozzleand changes in air flow experienced by the preparation are minimal. |
