Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology
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Comparative Study Clinical Trial
A new non-invasive method for recording the electro-olfactogram using external electrodes.
The aim of this investigation was to explore the possibility of recording the electro-olfactogram (EOG) using external electrodes placed on the root of the nose on either side of the bridge and at the medial termination of the eyebrows. The EOG is considered to be the summated generator potential of olfactory receptor cells and therefore represents peripheral olfactory events. Recording of human EOG is technically difficult due to poor access to the olfactory mucosa and the nasal irritation is tolerated by few subjects. ⋯ This non-invasive method of recording the EOG will have benefits for the objective assessment of olfactory function.