Methylphenidate enhances extinction of contextual fear

Related Experiment Video

Updated: May 25, 2026

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

Antony D Abraham1, Christopher L Cunningham, K Matthew Lattal

  • 1Department of Behavioral Neuroscience, Oregon Health & Science University, Portland, 97239, USA. abrahaan@ohsu.edu

Learning & Memory (Cold Spring Harbor, N.Y.)
|January 19, 2012
PubMed

Insights

Methylphenidate (MPH) enhances fear extinction retention in mice when administered before or after extinction training. This finding suggests MPH could aid behavioral therapies for fear disorders.

Area of Science:

  • Neuroscience
  • Behavioral Pharmacology

Background:

  • Methylphenidate (MPH) is a norepinephrine and dopamine transporter blocker used for ADHD and narcolepsy.
  • Limited research exists on MPH's effects on fear extinction, despite its role in fear acquisition.

Purpose of the Study:

  • To investigate the effect of Methylphenidate (MPH) on the extinction and retention of contextual fear in mice.
  • To determine if MPH administration timing and dosage influence fear extinction.

Main Methods:

  • C57BL/6 mice were administered varying doses of MPH (2.5-40 mg/kg) before or after contextual fear extinction sessions.
  • Freezing behavior, an indicator of fear, was measured during extinction and subsequent tests.

Main Results:

  • MPH administration before extinction decreased freezing during the session, with a 10 mg/kg dose showing persistence to the next day.
  • Post-extinction MPH administration resulted in dose-dependent reductions in freezing.
  • The timing and duration of the extinction session influenced MPH's effectiveness.

Conclusions:

  • Methylphenidate (MPH) can enhance fear extinction retention in a dose- and time-dependent manner.
  • MPH's effects are sensitive to the duration of the extinction session.
  • MPH may be a valuable adjunct to behavioral therapies for treating fear-related disorders.

More Related Videos

Disrupting Reconsolidation of Fear Memory in Humans by a Noradrenergic β-Blocker08:32

Disrupting Reconsolidation of Fear Memory in Humans by a Noradrenergic β-Blocker

Published on: December 18, 2014

Protocol for Studying Extinction of Conditioned Fear in Naturally Cycling Female Rats09:07

Protocol for Studying Extinction of Conditioned Fear in Naturally Cycling Female Rats

Published on: February 23, 2015

Related Concept Videos

Desensitization and Tachyphylaxis01:20

Desensitization and Tachyphylaxis

Tachyphylaxis is described as a rapid decrease in response to a drug after repeated or continuous administration of the same drug dose. It is a phenomenon where the body becomes less responsive to a particular substance or intervention over time, requiring higher doses or stronger interventions to achieve the same effect. It results from adaptive changes in the body's receptors, signaling pathways, or physiological processes that occur in response to prolonged exposure to a stimulus.
Several...
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...
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...
Behavior Therapy01:22

Behavior Therapy

Behavior therapy incorporates diverse techniques rooted in classical conditioning principles to address maladaptive behaviors and anxiety disorders. These methods aim to reduce avoidance behaviors, foster adaptive coping mechanisms, and alter associations between stimuli and responses, making them effective in a wide range of therapeutic contexts.
Exposure therapy is a cornerstone of behavioral treatment for anxiety disorders. It involves systematic exposure to feared stimuli, either in real...
Preparedness and Phobias01:09

Preparedness and Phobias

Human fear responses to certain stimuli, such as darkness, heights, deep water, and blood, can often arise despite the absence of direct negative experiences. This phenomenon is rooted in evolutionary psychology, which posits that humans have developed a predisposition to fear stimuli that historically posed significant survival threats. This predisposition, known as preparedness, suggests that early humans who developed a fear of potentially dangerous entities, such as venomous snakes and...
Classical Conditioning01:18

Classical Conditioning

Associative learning, a core principle in behavioral psychology, involves forming connections between events and facilitating learned responses. This concept is vividly illustrated by classical conditioning, a process extensively studied by the Russian physiologist Ivan Pavlov. Pavlov's pioneering research on dogs' digestive systems led to the discovery that behaviors can be learned through association, laying the groundwork for classical conditioning.
Ivan Pavlov observed that dogs salivated...