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Related Concept Videos

Gustation01:43

Gustation

50.7K
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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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...
335
Facial Feedback Hypothesis01:24

Facial Feedback Hypothesis

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Charles Darwin proposed that facial expressions are an evolutionary adaptation for communication. He argued that these expressions are not influenced by culture but are universal across species. For example, a snarling expression with exposed teeth signals a threat in many animals, including humans. Darwin also suggested that displaying an emotion can intensify the feeling. Smiling, for example, could enhance one's sense of happiness. This idea laid the foundation for understanding the role...
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The Tongue and Taste Buds00:49

The Tongue and Taste Buds

39.0K
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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Protocol for Data Collection and Analysis Applied to Automated Facial Expression Analysis Technology and Temporal Analysis for Sensory Evaluation
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Affective Face Processing Modified by Different Tastes.

Pei Liang1,2, Jiayu Jiang3,4, Jie Chen1

  • 1Department of Psychology, Faculty of Education, Hubei University, Hubei, China.

Frontiers in Psychology
|April 1, 2021
PubMed
Summary
This summary is machine-generated.

This study found that taste influences how we recognize facial emotions. Acidic tastes sped up reactions to negative faces, showing a cross-modal interaction between taste and emotional face processing.

Keywords:
ERPcross-modalemotional faceface search tasktaste

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Area of Science:

  • Neuroscience
  • Psychology
  • Sensory Science

Background:

  • Facial emotional recognition is a critical daily cognitive function.
  • The brain's mechanisms for processing facial information and potential cross-modal influences remain areas of active research.
  • Understanding how different sensory inputs interact with visual processing is key to comprehending complex cognitive functions.

Purpose of the Study:

  • To investigate the cross-modal interaction between taste and emotional face recognition.
  • To determine if different tastes (sweet and acidic) modulate the brain's processing of affective facial stimuli.
  • To explore the electrophysiological underpinnings of taste-emotion interactions in facial recognition.

Main Methods:

  • Utilized behavioral responses, including reaction time and correct response ratios, to assess task performance.
  • Employed event-related potentials (ERPs) to capture the electrophysiological correlates of taste and face processing.
  • Presented participants with visual emotional faces (positive and negative) under different taste conditions (sweet and acidic).

Main Results:

  • Behavioral data indicated faster reaction times when detecting negative target faces with an acidic taste compared to a sweet taste.
  • No significant interaction effect was found in the correct response ratios.
  • Event-related potential (ERP) analysis revealed that both sweet and acidic tastes modulated early (P1, N170) and mid-stage (early posterior negativity - EPN) components during affective face search.
  • No interaction effect was observed in the late-stage (LPP) component.

Conclusions:

  • Sweet and acidic tastes can influence the neural processing of affective facial stimuli.
  • Electrophysiological evidence supports a cross-modal interaction where taste modulates early stages of emotional face processing.
  • Findings contribute to a deeper understanding of the mechanisms underlying sensory integration in cognitive tasks.