NDLI: The involvement of the GABAergic system in the formation and expression of the extinction memory in the crab Neohelice granulata.

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The involvement of the GABAergic system in the formation and expression of the extinction memory in the crab Neohelice granulata.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Tano, Martin Carbó Molina, Victor A. Pedreira, Maria Eugenia
Description	Country affiliation: Argentina Author Affiliation: Tano MC ( Laboratorio de Neurobiología de la Memoria, Departamento de Fisiología y Biología Molecular y Celular, IFIBYNE-CONICET, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, C1428EHA, Argentina.)
Abstract	There is growing interest in the neurobiological mechanisms involved in the extinction of aversive memory. This cognitive process usually occurs after repeated or prolonged presentation of a conditioned stimulus that was previously associated with an unconditioned stimulus. If extinction is considered to be a new memory, the role of the Î³-aminobutyric acid system (GABAergic system) during extinction memory consolidation should be similar to that described for the original trace. It is also accepted that negative modulation of the GABAergic system before testing can impair extinction memory expression. However, it seems possible to speculate that inhibitory mechanisms may be required in order to acquire a memory that is inhibitory in nature. Using a combination of behavioral protocols, such as weak and robust extinction training procedures, and pharmacological treatments, such as the systemic administration of GABAA agonist (muscimol) and antagonist (bicuculline), we investigated the role of the GABAergic system in the different phases of the extinction memory in the crab Neohelice granulata. We show that the stimulation of the GABAergic system impairs and its inactivation facilitates the extinction memory consolidation. Moreover, fine variations in the GABAergic tone affect its expression at testing. Finally, an active GABAergic system is necessary for the acquisition of the extinction memory. This detailed description may contribute to the understanding of the role of the GABAergic system in diverse aspects of the extinction memory.
File Format	HTM / HTML
ISSN	0953816X
Issue Number	9
Volume Number	38
e-ISSN	14609568
Journal	European Journal of Neuroscience
Language	English
Publisher	Wiley-Blackwell
Publisher Date	2013-11-01
Publisher Place	France
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Discipline Neuroscience Bicuculline Pharmacology Extinction, Psychological Drug Effects Gaba-a Receptor Agonists Gaba-a Receptor Antagonists Memory Muscimol Animals Brachyura Conditioning, Classical Journal Article Research Support, Non-u.s. Gov't
Content Type	Text
Resource Type	Article
Subject	Neuroscience

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Picrotoxin but not bicuculline partially abolishes the cardio-inhibitory responses induced by visual stimulation in the crab Neohelice granulata.

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Identification of a Novel Retrieval-Dependent Memory Process in the Crab Neohelice granulata

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The involvement of the GABAergic system in the formation and expression of the extinction memory in the crab Neohelice granulata.

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