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Related Concept Videos

Principles of Classical Conditioning01:23

Principles of Classical Conditioning

Classical conditioning, as described by Ivan Pavlov, is a foundational concept in associative learning, where a neutral stimulus becomes capable of eliciting a conditioned response through association with an unconditioned stimulus. The process of acquisition, where this learning occurs, and the subsequent phenomena of contiguity, contingency, generalization, discrimination, extinction, and spontaneous recovery are crucial for a comprehensive understanding of classical conditioning.
During the...
Generalization, Discrimination, and Extinction01:24

Generalization, Discrimination, and Extinction

Generalization, discrimination, and extinction are key concepts in operant conditioning that influence how behaviors are learned and maintained.
Generalization occurs when a behavior reinforced in one context is performed in similar situations. For instance, a student who studies diligently for calculus and receives excellent grades might apply the same study habits to psychology and history, expecting similar results. Generalization shows how learning in one setting can influence behavior in...
Avoidance Learning and Learned Helplessness01:14

Avoidance Learning and Learned Helplessness

Avoidance learning and learned helplessness are critical concepts in understanding behavioral responses to negative stimuli.
Avoidance learning occurs when an organism learns that a specific behavior can prevent an unpleasant outcome. For example, a student who receives a bad grade may start studying harder to avoid future poor grades. This behavior persists even when the negative outcome is no longer present. Avoidance learning is powerful because it maintains behavior in the absence of the...
Instinctive Drift01:05

Instinctive Drift

Instinctive drift refers to the tendency of animals to revert to their innate behaviors despite repeated reinforcement. Breland and Breland demonstrated this concept in an experiment with a raccoon. The raccoon was trained to pick up two coins and place them in a container in exchange for food. Initially, the raccoon learned to associate the coins with food, making them a conditioned stimulus or a substitute for food. However, over time, the raccoon became less willing to put the coins into the...
Chemotherapy-Induced Nausea and Vomiting: Cannabinoids01:21

Chemotherapy-Induced Nausea and Vomiting: Cannabinoids

Tetrahydrocannabinol (THC) is a phytocannabinoid that primarily interacts with the CB1 receptor, a type of G protein-coupled receptor (GPCR) predominantly in and around the chemoreceptor trigger zone (CTZ) and emetic center. THC also blocks the serotonin receptor activity in the dorsal vagal complex (DVC) by inhibiting serotonin release. THC exerts its anti-emetic effects through these interactions, which are beneficial for patients undergoing chemotherapy.
Two synthetic agonists of THC,...
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...

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Related Experiment Video

Updated: Jul 10, 2026

A Protocol for Measuring Cue Reactivity in a Rat Model of Cocaine Use Disorder
07:51

A Protocol for Measuring Cue Reactivity in a Rat Model of Cocaine Use Disorder

Published on: June 18, 2018

The endocannabinoid system and extinction learning.

Beat Lutz1

  • 1Department of Physiological Chemistry, Johannes Gutenberg-University Mainz, Duesbergweg 6, D-55099 Mainz, Germany. blutz@uni-mainz.de

Molecular Neurobiology
|October 24, 2007
PubMed
Summary

The endocannabinoid system, particularly cannabinoid receptor type 1 (CB1 receptor), influences memory extinction. This system

Area of Science:

  • Neuroscience
  • Pharmacology

Background:

  • The endocannabinoid system is a key neuromodulator involved in numerous physiological and pathological processes.
  • Cannabinoid receptor type 1 (CB1 receptor) and endocannabinoids are prevalent in the brain, playing significant roles in learning and memory.
  • Aberrant memory processing and impaired adaptation are features of psychiatric disorders like PTSD, suggesting therapeutic potential for the endocannabinoid system.

Purpose of the Study:

  • To review the current understanding of the endocannabinoid system's role in modulating extinction learning.
  • To explore the therapeutic potential of targeting the endocannabinoid system for psychiatric disorders characterized by memory processing deficits.

Main Methods:

  • Literature review of studies investigating the endocannabinoid system and extinction learning.

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Extinction Training During the Reconsolidation Window Prevents Recovery of Fear
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Extinction Training During the Reconsolidation Window Prevents Recovery of Fear

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Vagus Nerve Stimulation as a Tool to Induce Plasticity in Pathways Relevant for Extinction Learning
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Vagus Nerve Stimulation as a Tool to Induce Plasticity in Pathways Relevant for Extinction Learning

Published on: August 21, 2015

Related Experiment Videos

Last Updated: Jul 10, 2026

A Protocol for Measuring Cue Reactivity in a Rat Model of Cocaine Use Disorder
07:51

A Protocol for Measuring Cue Reactivity in a Rat Model of Cocaine Use Disorder

Published on: June 18, 2018

Extinction Training During the Reconsolidation Window Prevents Recovery of Fear
11:17

Extinction Training During the Reconsolidation Window Prevents Recovery of Fear

Published on: August 24, 2012

Vagus Nerve Stimulation as a Tool to Induce Plasticity in Pathways Relevant for Extinction Learning
11:02

Vagus Nerve Stimulation as a Tool to Induce Plasticity in Pathways Relevant for Extinction Learning

Published on: August 21, 2015

  • Analysis of rodent memory test data to understand CB1 receptor-mediated signaling in behavioral adaptation.
  • Synthesis of findings related to psychiatric disorders and memory modulation.

    • Main Results:

    • The endocannabinoid system, especially CB1 receptor activation, is crucial for facilitating behavioral adaptation following the acquisition of aversive memories.
    • The system's involvement in memory acquisition and extinction varies depending on the specific memory test used.
    • Evidence suggests a significant role in the modulation of extinction learning.

    Conclusions:

    • The endocannabinoid system, particularly CB1 receptor signaling, is a critical modulator of extinction learning.
    • Targeting the endocannabinoid system offers a promising therapeutic avenue for conditions involving maladaptive memory, such as PTSD and anxiety disorders.