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Related Experiment Video

Updated: May 8, 2026

Simultaneous Detection of c-Fos Activation from Mesolimbic and Mesocortical Dopamine Reward Sites Following Naive Sugar and Fat Ingestion in Rats
08:07

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Published on: August 24, 2016

Ventral tegmental dopamine dysregulation prevents appetitive memory destabilization.

Amy C Reichelt1, Marc T Exton-McGuinness, Jonathan L C Lee

  • 1School of Psychology, University of Birmingham, Birmingham, B15 2TT, United Kingdom. a.reichelt@unsw.edu.au

The Journal of Neuroscience : the Official Journal of the Society for Neuroscience
|August 30, 2013
PubMed
Summary

Memory reconsolidation updates memories but requires destabilization. Ventral tegmental area (VTA) signaling disruption prevented this destabilization, suggesting VTA is crucial for memory updating processes.

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08:05

A Prediction Error-driven Retrieval Procedure for Destabilizing and Rewriting Maladaptive Reward Memories in Hazardous Drinkers

Published on: January 5, 2018

Area of Science:

  • Neuroscience
  • Memory Consolidation
  • Learning and Memory

Background:

  • Memories must be updated to remain relevant through reconsolidation.
  • Memory destabilization, potentially initiated by prediction error signals, is a prerequisite for reconsolidation.
  • The ventral tegmental area (VTA) is implicated in mediating prediction errors.

Purpose of the Study:

  • To investigate the role of ventral tegmental area (VTA) signaling in memory destabilization.
  • To determine if VTA signaling is essential for initiating the reconsolidation process.
  • To examine the involvement of NMDA receptors within the VTA in memory reconsolidation.

Main Methods:

  • Rats were used to study appetitive goal-tracking memory.
  • Ventral tegmental area (VTA) signaling was dysregulated.
  • Intra-VTA infusions of NMDA receptor antagonists (AP5 and MK-801) were administered.

Main Results:

  • Dysregulation of VTA signaling prevented the destabilization of an appetitive goal-tracking memory.
  • Intra-VTA infusion of AP5 or MK-801 did not selectively disrupt reconsolidation.
  • These findings suggest the VTA may not be a key neural site for reconsolidation plasticity.

Conclusions:

  • Ventral tegmental area (VTA) signaling is critical for the destabilization phase preceding memory reconsolidation.
  • The VTA itself may not be the primary neural locus for the plasticity underlying reconsolidation.
  • Prediction error signaling in the VTA appears necessary for initiating memory updating.