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Title: CA1 inactivation impairs episodic-like memory in rats
Authors: Drieskens, Davi Carvalho
Neves, Livia Rodrigues
Pugliane, Karen Cristina
Montenegro Bento de Souza, Ingrid Brasilino
Lima, Alvaro da Costa [UNIFESP]
da Silva Stiebbe Salvadori, Mirian Graciela
Ribeiro, Alessandra Mussi [UNIFESP]
Silva, Regina Helena [UNIFESP]
Barbosa, Flavio Freitas
Keywords: Episodic-like memory
Wistar rats
Issue Date: 2017
Publisher: Academic Press Inc Elsevier Science
Citation: Neurobiology Of Learning And Memory. San Diego, v. 145, p. 28-33, 2017.
Abstract: Episodic memory was initially believed to be unique to humans. However, studies demonstrate that non-human species discriminate items based on the triad what, where and when. Here we addressed the role of the dorsal hippocampal subfield CA1 in an integrative what-where-when task in Wistar rats. We performed bilateral inactivation of dorsal CA1 with the GABAA agonist muscimol previously to the task. As expected, sham-operated animals recollected an integrative memory for objects (what), their places (where) and temporal order (when). However, the inactivation of CA1 impaired the performance of the three components of episodic-like memory. In addition, total time of objects exploration and distance traveled were not different between groups, indicating that rats had similar levels of motivation, thus, alterations in exploration does not account for impaired locomotor performance. Altogether, our data provides evidence that CA1 plays an important role in episodic-like memory. (C) 2017 Elsevier Inc. All rights
ISSN: 1074-7427
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