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Related Concept Videos

Gustation01:43

Gustation

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Gustation is a chemical sense that, along with olfaction (smell), contributes to our perception of taste. It starts with the activation of receptors by chemical compounds (tastants) dissolved in the saliva. The saliva and filiform papillae on the tongue distribute the tastants and increase their exposure to the taste receptors.
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Taste Buds and Receptors01:20

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Gustation, or the sense of taste, is intrinsically linked to the anatomical structures located on the tongue. This organ's surface, along with the entirety of the oral cavity, is adorned with stratified squamous epithelium. Evident on the tongue are elevated structures known as papillae (singular = papilla), which house the mechanisms for the transduction of gustatory stimuli. Four distinct types of papillae exist, each identified by their unique morphological attributes: the circumvallate,...
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The Physiology of Taste01:24

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The perception of a salty flavor is facilitated by sodium ions within the oral salivary fluid. Upon consumption of a salty substance, salt crystals disassemble, leading to the liberation of its constituents—Na+ and Cl- ions. These ions subsequently dissolve into the salivary fluid present in the oral cavity. The external environment of the gustatory cells experiences an elevation in Na+ concentration, thereby establishing a potent concentration gradient. This gradient propels the...
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Sensory Perception: Organization of the Somatosensory System01:11

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The somatosensory system is the central and peripheral nervous system component that senses and processes touch, pressure, pain, temperature, and body position or proprioception. The process of sensation takes place at three levels:
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Tactile and Chemical Senses01:27

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Tactile senses encompass touch, temperature, and pain, each mediated by specific receptors. Touch receptors detect mechanical energy or pressure against the skin. Sensory fibers from these receptors enter the spinal cord and relay information to the brain stem. Here, most fibers cross over to the opposite side of the brain. The touch information then moves to the thalamus, which projects a map of the body's surface onto the somatosensory areas of the parietal lobes in the cerebral cortex.
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The sense of smell is achieved through the activities of the olfactory system. It starts when an airborne odorant enters the nasal cavity and reaches olfactory epithelium (OE). The OE is protected by a thin layer of mucus, which also serves the purpose of dissolving more complex compounds into simpler chemical odorants. The size of the OE and the density of sensory neurons varies among species; in humans, the OE is only about 9-10 cm2.
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Updated: Apr 4, 2026

New Methods to Study Gustatory Coding
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Multisensory Processing of Gustatory Stimuli.

S A Simon1, I E de Araujo2, J R Stapleton3

  • 1Department of Neurobiology, Duke University, Durham, NC 27710 ; Department of Anesthesiology, Duke University, Durham, NC 27710 ; Center of Neuroengineering, Duke University, Durham, NC 27710.

Chemosensory Perception
|September 1, 2015
PubMed
Summary
This summary is machine-generated.

Taste and touch (somatosensory) systems work together, influencing how we perceive flavor. This review explores how multisensory processing, from taste cells to the brain, integrates these sensations to guide behavior.

Keywords:
fixed ratio schedulegeneralized linear modelgustationlickingmultisensory integrationnicotinesodium chloridesomatosensationtrigeminal system

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Area of Science:

  • Neuroscience
  • Sensory Science
  • Chemosensation

Background:

  • Gustatory perception is a complex process influenced by multiple sensory inputs.
  • Intra-oral stimuli activate both taste receptors and the somatosensory system simultaneously.
  • Understanding the interplay between taste and somatosensory information is crucial for comprehending flavor perception.

Purpose of the Study:

  • To review the evidence linking gustatory perception with concurrent somatosensory processing.
  • To explore the levels at which multisensory information is integrated, from taste cells to the gustatory cortex.
  • To highlight how shared stimuli provide distinct information for behavioral guidance.

Main Methods:

  • Review of existing scientific literature on gustatory and somatosensory integration.
  • Analysis of studies investigating multisensory processing in the gustatory system.
  • Examination of the role of the somatosensory system in modulating taste perception.

Main Results:

  • Gustatory perception is intrinsically linked to somatosensory processing.
  • Multisensory integration occurs at various neural levels, including taste cells and the gustatory cortex.
  • The somatosensory system provides complementary information to taste stimuli, influencing behavior.

Conclusions:

  • Taste and somatosensory processing are interdependent, forming a multimodal sensory experience.
  • The brain integrates information from both systems to create a comprehensive perception of oral stimuli.
  • This integrated processing is essential for adaptive behaviors related to food intake and environmental interaction.