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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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The Physiology of Taste01:24

The Physiology of Taste

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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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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 Tongue and Taste Buds00:49

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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.
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Conditioned Taste Aversion01:14

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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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Salivary Glands and Saliva01:23

Salivary Glands and Saliva

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The salivary glands, of which there are three pairs known as the parotid, submandibular, and sublingual glands, play a crucial role in maintaining oral health and initiating the digestive process. Positioned near the ears, beneath the masseter muscle, the parotid glands secrete saliva into the oral cavity through the parotid duct of Stensen. Meanwhile, the submandibular glands, located on the floor of the mouth, secrete saliva through channels named submandibular ducts. The sublingual glands,...
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Related Experiment Video

Updated: Apr 6, 2026

New Methods to Study Gustatory Coding
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A gustatory stimulator.

Emilia Iannilli1, Marcel Beger1, Raffaela Fürer1

  • 1Interdisciplinary Center "Smell & Taste", Department of Otorhinolaryngology, TU Dresden, Dresden, Germany.

Journal of Neuroscience Methods
|July 31, 2015
PubMed
Summary
This summary is machine-generated.

A new computer-controlled gustometer precisely delivers taste stimuli for brain recordings. This system effectively elicits gustatory event-related potentials (gERPs) with rapid pulse delivery and controlled timing.

Keywords:
ERPsPulse rise-timePulse taste delivery

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Area of Science:

  • Neuroscience
  • Sensory Science
  • Biomedical Engineering

Background:

  • Precise control of stimulus onset and duration is essential for eliciting gustatory event-related potentials (gERPs).
  • Existing taste delivery systems may lack the necessary precision for advanced neuroscience investigations.

Purpose of the Study:

  • To characterize a novel stepper-motor, computer-driven gustometer for precise liquid pulse delivery.
  • To evaluate the suitability of this gustometer for eliciting gERPs in gustatory tasks.

Main Methods:

  • Utilized a computer-driven gustometer with stepper-motor controlled glass syringes to spray liquid taste stimuli.
  • Measured pulse characteristics including onset rise-time step and onset delay time.
  • Employed a pulse stream with interleaved taste and tasteless stimuli, with thermos-regulated solutions.

Main Results:

  • The gustometer demonstrated a pulse rise time under 100 ms, which varied with pulse duration.
  • Stimulus delay over a 12m hose ranged from 55 ms to 71 ms.
  • The system successfully delivered controlled pulses of thermos-regulated solutions.

Conclusions:

  • The measured time-rise characteristics confirm the gustometer's suitability for eliciting event-related potentials (ERPs).
  • This technology offers a promising tool for neuroscience research involving gustatory stimuli.