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Chem. Senses 24: 137-144, 1999
© Oxford University Press

The Effect of Odour Priming on Long Latency Visual Evoked Potentials of Matching and Mismatching Objects

Joanne Grigor, Steve Van Toller1, John Behan2 and Anne Richardson2

Department of Clinical Neurology, University of Sheffield, Royal Hallamshire Hospital, Sheffield 1 Warwick Olfaction Research Group, University of Warwick, Warwick CV4 7AL 2 Quest International, Ashford, Kent TN24 0LT, UK

Corrrespondence to be sent to: Steve Van Toller, Warwick Olfaction Research Group, University of Warwick, Warwick CV4 7AL, UK

This study reports a cross-modal, olfactory/visual event related potential (ERP) using odours as olfactory primes. The results show a difference in the ERP waveform for the N400 waveform when a visual image does not match the priming odour. An N400 peak was produced for both the matched and mismatched conditions but the peaks were significantly more negative for the mismatched condition. By the use of non-food odours this study extends an earlier finding by Grigor, who, using the same ERP paradigm, obtained similar results for food odours and photographs of food.


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