Location of the primary gustatory area in humans and its properties, studied by magnetoencephalography.

The precise location of the primary gustatory area (PGA) in humanshas not been determined conclusively, regardless of intensive studieswith various non-invasive brain imaging. Analysis of brain functionby fMRI and PET is based on changes in the regional cerebral bloodflow (rCBF) several seconds after electrical neural activity. Thus,these techniques are not suitable for the location of the PGA, thecortical area activated at the shortest latency after gustatory stimula-tion, though most studies have localized the putative PGA in themiddle dorsal insula and the frontal operculum (Small

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