Differential Neural Responses Evoked by Orthonasal versus Retronasal Odorant Perception in Humans

Odors perceived through the mouth (retronasally) as flavor are referred to the oral cavity, whereas odors perceived through the nose (orthonasally) are referred to the external world. We delivered vaporized odorants via the orthonasal and retronasal routes and measured brain response with fMRI. Comp...

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