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Related Concept Videos

Real-World Application of Classical Conditioning01:15

Real-World Application of Classical Conditioning

Classical conditioning not only includes the initial pairing of stimuli but also extends to more complex forms, such as higher-order conditioning. Higher-order conditioning involves creating associations beyond the primary conditioned stimulus, resulting in a chain of conditioned responses.
Higher-order, or second-order, conditioning occurs when a neutral stimulus becomes associated with an already established conditioned stimulus through repeated pairings. For instance, if a dog has been...
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...
Behaviorism01:28

Behaviorism

The field of behaviorism was pioneered by figures such as Ivan Pavlov, John B. Watson, and B.F. Skinner fundamentally shifted the focus of psychology to the observable and controllable aspects of human and animal behavior. This shift marked a critical evolution in the discipline, emphasizing scientific rigor and experimental methodology.
The core premise of behaviorism is its focus on observable behavior rather than internal thoughts or feelings. This approach argues that true scientific...
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...
Preclinical Development: Overview01:28

Preclinical Development: Overview

Preclinical development consists of a series of tests that ensure the safety and efficacy of a new therapeutic compound before it is tested in humans. There are four main phases to this process. First, safety pharmacology tests are conducted to ensure the drug does not produce any acutely harmful effects. These tests examine parameters such as bronchoconstriction, cardiac dysrhythmias, blood pressure changes, and ataxia. Next, preliminary toxicological testing is performed to determine the...
Operant Conditioning Intervention01:24

Operant Conditioning Intervention

Operant conditioning serves as a foundational principle in therapeutic interventions aimed at modifying maladaptive behaviors. Central to this approach is the notion that behaviors, both adaptive and maladaptive, are learned through reinforcement. By analyzing the environmental factors that reinforce problematic behaviors, clinicians can design interventions to weaken these reinforcements and replace maladaptive behaviors with healthier alternatives.
In operant conditioning, behaviors that are...

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A Method for Remotely Silencing Neural Activity in Rodents During Discrete Phases of Learning
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Postconditioning: from experimental proof to clinical concept.

Nathan Mewton1, Fabrice Ivanès, Martin Cour

  • 1Hôpital Cardiovasculaire Louis Pradel, 28 Avenue Doyen Lépine, Bron 69677, France. nmewton@gmail.com

Disease Models & Mechanisms
|January 16, 2010
PubMed
Summary
This summary is machine-generated.

Postconditioning, a method of brief ischemia during reperfusion, effectively reduces heart attack (myocardial infarction) size by 30-50%. This technique is a promising therapeutic strategy for acute myocardial infarction patients.

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Area of Science:

  • Cardiology
  • Ischemic Heart Disease
  • Regenerative Medicine

Background:

  • Myocardial reperfusion injury significantly contributes to the final infarct size after acute myocardial infarction.
  • Pharmacological interventions during reperfusion have shown inconsistent results in reducing injury.
  • Postconditioning emerges as a promising, non-pharmacological therapeutic strategy.

Purpose of the Study:

  • To review the postconditioning technique for reducing myocardial reperfusion injury.
  • To explore the mechanisms and define protocols for applying postconditioning in acute myocardial infarction.
  • To highlight its efficacy confirmed in animal and human studies.

Main Methods:

  • Focus on postconditioning: brief, repeated ischemia at the onset of reperfusion.
  • Analysis of data from diverse animal models and experimental settings.
  • Evaluation of applicability in human patients with acute myocardial infarction.

Main Results:

  • Postconditioning is the first method consistently proven effective in animal models and confirmed in human studies.
  • This simple method, applied within the first minute of reperfusion, reduces infarct size by 30-50%.
  • Advances in understanding the mechanisms and defining accurate, applicable protocols.

Conclusions:

  • Postconditioning is a highly effective and easily applicable method to reduce infarct size in acute myocardial infarction.
  • It represents a significant advancement over pharmacological interventions for myocardial reperfusion injury.
  • Further research and clinical application of postconditioning protocols are warranted.