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Related Concept Videos

Olfactory Receptors: Location and Structure01:03

Olfactory Receptors: Location and Structure

The process of olfaction, also known as the sense of smell, is a sophisticated chemical response system. The specialized sensory neurons that facilitate this process, known as olfactory receptor neurons, are situated in an upper segment of the nasal cavity, known as the olfactory epithelium. Olfactory sensory neurons are bipolar, with their dendrites extending from the epithelium's apex into the mucus that lines the nasal cavity. Airborne molecules, when inhaled, traverse the olfactory...
Taste Buds and Receptors01:20

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,...
Classical Conditioning in Daily Life01:17

Classical Conditioning in Daily Life

Classical conditioning, a fundamental principle of associative learning, explains various phenomena observed in daily life, such as fear development, the placebo effect, taste aversion, and drug habituation. These applications demonstrate the profound impact of associative learning on human behavior and physiological responses.
John B. Watson and Rosalie Rayner famously demonstrated the development of fear through classical conditioning in their experiment with Little Albert. They paired the...
Conditioned Taste Aversion01:14

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 exposure...

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Related Experiment Video

Updated: Jul 24, 2026

Pavlovian Conditioned Approach Training in Rats
06:57

Pavlovian Conditioned Approach Training in Rats

Published on: February 4, 2016

Olfactory aversion conditioning and overeating: a review and some data.

A D Cole, N W Bond

    Perceptual and Motor Skills
    |October 1, 1983
    PubMed
    Summary

    Olfactory aversion therapy, which pairs target foods with noxious odors, did not effectively manage overeating or promote significant long-term weight loss in overweight women. Weight regain occurred after treatment cessation.

    Area of Science:

    • Behavioral Psychology
    • Obesity Research
    • Clinical Psychology

    Background:

    • Overeating is a significant public health concern contributing to obesity.
    • Behavioral interventions are explored for managing overeating and weight loss.
    • Olfactory aversion conditioning is a potential, yet understudied, therapeutic approach.

    Purpose of the Study:

    • To evaluate the efficacy of olfactory aversion conditioning as a management strategy for overeating.
    • To assess the impact of olfactory aversion therapy on weight loss in overweight individuals.

    Main Methods:

    • A randomized controlled trial involving 42 overweight women.
    • Three groups: olfactory aversion therapy, attention-placebo control, and no-contact control.
    • An 8-week treatment phase involving weekly sessions pairing target foods with noxious odors or air.

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    Last Updated: Jul 24, 2026

    Pavlovian Conditioned Approach Training in Rats
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    Published on: February 4, 2016

    How to Create Conditioned Taste Aversion for Grazing Ground Covers in Woody Crops with Small Ruminants
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    Main Results:

    • The olfactory aversion therapy group lost an average of 4.7 lb, compared to 3.6 lb for the attention-placebo group and 0.5 lb for the no-contact group.
    • Weight differences between groups were not sustained at an 8-week follow-up, with all groups returning to pretreatment levels.
    • No significant long-term weight loss was observed for the olfactory aversion therapy intervention.

    Conclusions:

    • Olfactory aversion therapy is not an effective method for achieving sustained weight loss in overweight individuals.
    • The temporary weight loss observed was not clinically significant or durable.
    • Further research may be needed to explore alternative or adjunct therapies for overeating and obesity management.