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Neurochemical Research

, Volume 27, Issue 11, pp 1491–1498 | Cite as

Molecular Mechanisms of Memory Retrieval

  • German Szapiro
  • Julieta M. Galante
  • Daniela M. Barros
  • Miguelina Levi de Stein
  • Monica R. M. Vianna
  • Luciana A. Izquierdo
  • Ivan Izquierdo
  • Jorge H. Medina
Article

Abstract

Memory retrieval is a fundamental component or stage of memory processing. In fact, retrieval is the only possible measure of memory. The ability to recall past events is a major determinant of survival strategies in all species and is of paramount importance in determining our uniqueness as individuals. Most biological studies of memory using brain lesion and/or gene manipulation techniques cannot distinguish between effects on the molecular mechanisms of the encoding or consolidation of memories and those responsible for their retrieval from storage. Here we examine recent findings indicating the major molecular steps involved in memory retrieval in selected brain regions of the mammalian brain. Together the findings strongly suggest that memory formation and retrieval may share some molecular mechanisms in the hippocampus and that retrieval initiates extinction requiring activation of several signaling cascades and protein synthesis.

Avoidance training memory retrieval memory extinction hippocampus synaptic plasticity 

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Copyright information

© Plenum Publishing Corporation 2002

Authors and Affiliations

  • German Szapiro
    • 1
  • Julieta M. Galante
    • 1
  • Daniela M. Barros
    • 2
  • Miguelina Levi de Stein
    • 1
  • Monica R. M. Vianna
    • 2
  • Luciana A. Izquierdo
    • 2
  • Ivan Izquierdo
    • 2
  • Jorge H. Medina
    • 1
    • 3
  1. 1.Facultad de Medicina, UBAInstituto de Biologia Celular y NeurocienciasBuenos AiresArgentina
  2. 2.Centro de Memoria, Departamento de BioquimicaInstituto de Biociencias, UFRGSPorto AlegreBrazil
  3. 3.Departamento de Fisiología, Facultad de MedicinaUBABuenos AiresArgentina

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