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Review and Preview

Review and Preview

In statistics, several tools are used to interpret the data. Measures of central tendency represent the characteristics of the data, such as mean, median, and mode. Additionally, measures of variance like standard deviation and range are used to find the spread of data from the mean. Relative standing measures the distance between data locations. Commonly used measures of relative standings are percentile, z score, and quartiles.
Percentiles are a type of fractile that partition data into...

Review and Preview

Review and Preview

Data are individual items of information obtained from a population or sample. Data may be classified as qualitative (categorical), quantitative continuous, or quantitative discrete. Because it is not practical to measure the entire population in a study, researchers use samples to represent the population. A random sample is a representative group from the population chosen by using a method that gives each individual in the population an equal chance of being included in the sample. Random...

The Physiology of Taste

The Physiology of Taste

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...

The Tongue and Taste Buds

The Tongue and Taste Buds

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.

Taste Buds and Receptors

Taste Buds and Receptors

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,...

Conditioned Taste Aversion

Conditioned Taste Aversion

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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Taste Exam: A Brief and Validated Test

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Published on: August 17, 2018

Taste Changes after Bariatric Surgery: a Systematic Review.

Kasim Ahmed¹, Nicholas Penney², Ara Darzi¹

¹Department of Surgery and Cancer, Imperial College London, London, UK.

Obesity Surgery

|August 1, 2018

Summary

Bariatric surgery alters taste perception, increasing sensitivity to sweet and fatty foods while reducing enjoyment. These sensory changes may help patients maintain weight loss long-term.

Keywords:

Bariatric surgery Gustation Obesity Olfaction Taste

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Area of Science:

Bariatric Surgery
Sensory Perception
Gustation

Background:

Bariatric surgery can lead to significant dietary changes.
Alterations in taste perception and preferences are potential contributors to weight loss post-surgery.

Purpose of the Study:

To systematically review and synthesize evidence on gustation, olfaction, and sensory perception changes after bariatric procedures.
To investigate the impact of bariatric surgery on taste and food preferences.

Main Methods:

A systematic literature search was conducted across multiple databases.
Inclusion criteria focused on animal and human studies examining sensory perception following bariatric procedures.
Sixty-one relevant articles were selected from an initial pool of 255.

Main Results:

Evidence supports significant changes in taste perception and hedonic responses post-bariatric surgery.
Increased taste sensitivity to sweet and fatty stimuli was observed.
A reduced hedonic response to sweet and fatty stimuli was reported in patients.

Conclusions:

Bariatric procedures induce alterations in taste perception.
These taste changes may play a role in the long-term maintenance of weight loss achieved through surgery.