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mouthfeel (GB)
See below trigeminal,

Trigeminus (trigeminal nerve, German Drilling nerve) is the fifth, very sensitive cranial nerve of the facial skull. It owes its name to the fork in three main branches, one of which also has olfactory functions. It conveys tactile sensations of the facial region, which are perceived on the mucous membranes of the oral cavity and the nose when drinking wine or drinking alcohol. These are irritative (irritating, exciting) sensations of a physical and less chemical nature. The trigeminal stimuli are a partial aspect of the haptic Perception. These are not typical olfactory or Taste sensations although the effects on the overall impression are relatively strong.

Tongue with the taste zones

Trigeminal nerve contributes significantly to the sense of smell (around 30%). In smokers, the nasal-trigeminal sensitivity is reduced, the olfactory (smelling) sensibility unaffected. Trigeminal stimuli can be both positive (alcohol, kren, menthol, carbonic acid, paprika. pepper, Mustard, onion), but also...

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