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Related Concept Videos

The Physiology of Taste01:24

The Physiology of Taste

8.0K
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...
8.0K
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

Taste Buds and Receptors

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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,...
5.5K
The Tongue and Taste Buds00:49

The Tongue and Taste Buds

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The surface of the tongue is covered with various small bumps called papillae, which either distribute what has been ingested (filiform papillae) or contain the sensory taste (or gustatory) receptor cells (fungiform, circumvallate, and foliate papillae). Embedded within each taste-related papilla are the taste buds—clusters of 30 to 100 gustatory receptor cells.
41.4K
Tactile and Chemical Senses01:27

Tactile and Chemical Senses

1.1K
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.
1.1K
Conditioned Taste Aversion01:14

Conditioned Taste Aversion

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Conditioned taste aversion, also known as sauce béarnaise syndrome, is a phenomenon in which an individual develops an aversion to a certain food taste following a negative experience, typically illness. This form of aversion is a type of classical conditioning in which the taste of the food (conditioned stimulus, CS) is associated with the experience of illness (unconditioned stimulus, UCS).
A notable characteristic of conditioned taste aversion is that it often requires only a single...
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Related Experiment Video

Updated: Feb 26, 2026

New Methods to Study Gustatory Coding
10:59

New Methods to Study Gustatory Coding

Published on: June 29, 2017

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New Methods to Study Gustatory Coding.

Alejandra Boronat-García1, Sam Reiter2, Kui Sun1

  • 1National Institute of Child Health and Human Development (NICHD), National Institutes of Health (NIH).

Journal of Visualized Experiments : Jove
|July 18, 2017
PubMed
Summary
This summary is machine-generated.

Researchers developed new methods to study taste in moths. These techniques allow detailed recording of gustatory receptor neuron activity, advancing our understanding of sensory coding.

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Author Spotlight: Advances in Chemoreception – From Insect Odor Receptors to Non-Coding RNAs
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Author Spotlight: Advances in Chemoreception – From Insect Odor Receptors to Non-Coding RNAs

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Whole-Mount Staining, Visualization, and Analysis of Fungiform, Circumvallate, and Palate Taste Buds
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Whole-Mount Staining, Visualization, and Analysis of Fungiform, Circumvallate, and Palate Taste Buds

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Related Experiment Videos

Last Updated: Feb 26, 2026

New Methods to Study Gustatory Coding
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Whole-Mount Staining, Visualization, and Analysis of Fungiform, Circumvallate, and Palate Taste Buds
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Whole-Mount Staining, Visualization, and Analysis of Fungiform, Circumvallate, and Palate Taste Buds

Published on: February 11, 2021

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Area of Science:

  • Neuroscience
  • Sensory Biology
  • Insect Physiology

Background:

  • The sense of taste is crucial for animal survival, enabling detection of environmental chemicals.
  • Gustatory Receptor Neurons (GRNs) encode tastant information as electrical activity patterns for brain processing.
  • Simple animal models are vital for understanding fundamental principles of sensory coding.

Purpose of the Study:

  • To introduce novel methodologies for investigating gustatory coding in the moth Manduca sexta.
  • To enable in vivo recording and characterization of GRN activity with high precision.
  • To provide a foundation for detailed analysis of taste perception mechanisms.

Main Methods:

  • A dissection technique to expose maxillary nerves and the subesophageal zone for GRN axon recording.
  • Extracellular recordings using tetrodes placed in the maxillary nerve to capture multi-neuron activity.
  • A novel system for precise temporal delivery and monitoring of various tastants.
  • Comparison of extracellular tetrode recordings with intracellular sharp electrode recordings for validation.

Main Results:

  • Successful in vivo recording of GRN electrical activity before, during, and after tastant presentation.
  • Demonstration of voltage traces from multiple GRNs, showcasing complex neural responses.
  • Application of spike sorting techniques to differentiate and identify individual neuron responses.
  • Validation of the extracellular recording method through comparison with intracellular recordings.

Conclusions:

  • The presented methods offer a robust platform for studying gustatory coding in vivo.
  • These techniques facilitate detailed characterization of neural responses in GRNs.
  • The findings contribute to a deeper understanding of how taste information is processed in the nervous system.