Paper Info
Title
A spatiotemporal comparison between olfactory and trigeminal event-related potentials.
Abstract
The present study compared the temporal and spatial aspects of human olfactory and trigeminal processing. A relatively selective trigeminal stimulus, CO2, and a relatively selective olfactory stimulus, H2S, were delivered with an olfactometer to young, healthy volunteers. The analysis was performed in a classical (5-electrode, main ERPs peaks) and modern approach (high topographical resolution, inverse solution, source localization). Results of microstate segmentation highlighted 5 maps that generally described the two processes at cerebral level. The trigeminal response differed from the olfactory response up to 300ms after stimulus onset. In this time range, source analysis pointed out that the olfactory stimulation involved olfactory related areas, while trigeminal stimulation involved noxious/somatosensory specific brain areas. Moreover, from 300ms on our data showed a similarity between the two processes. Statistical parametrical mapping of the differences between conditions suggested greater activation in a specific motor/sniffing network for the CO2 stimulation (probably related to a regulation of the potential noxious stimulus) and a greater activation of the ipsilateral primary olfactory cortex for H2S.
Year
DOI
Venue
2013
10.1016/j.neuroimage.2012.12.057
NeuroImage
Keywords
Field
DocType
Source localization,Inverse solution,Cross-modal interaction,Trigeminal system,Olfaction,Microstate segmentation
Primary olfactory cortex,Olfactory stimulus,Neuroscience,Olfaction,Noxious stimulus,Event-related potential,Sniffing,Psychology,Somatosensory system,Stimulus (physiology)
Journal
Volume
ISSN
Citations 
77
1053-8119
3
PageRank 
References 
Authors
0.54
1
4
Name
Order
Citations
PageRank
Emilia Iannilli181.46
Stefan Wiens230.88
Artin Arshamian331.55
Han-Seok Seo430.88