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9 - Relational Memory Functions of the Hippocampal Pallium in Teleost Fish

from Part I - Evolution of Learning Processes

Published online by Cambridge University Press:  26 May 2022

By
Antonia Gómez ,
Francisco M. Ocaña ,
Tamara del Águila ,
Fernando Rodríguez  and
Cosme Salas
Edited by
Mark A. Krause ,
Karen L. Hollis  and
Mauricio R. Papini
Mark A. Krause
Affiliation:
Southern Oregon University
Karen L. Hollis
Affiliation:
Mount Holyoke College, Massachusetts
Mauricio R. Papini
Affiliation:
Texas Christian University
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Summary

The hippocampus of mammals, birds, reptiles, and amphibians is a fundamental brain structure for certain forms of relational memory. We review here the experimental evidence indicating that the hippocampal pallium of teleost fish, like the hippocampus of land vertebrates, is involved in relational map-like spatial memory, endowing fish behavior with the capability for allocentric navigation and allowing the flexible expression of spatial memory. In addition, recent evidence suggests that the teleost fish hippocampal pallium plays an important role in the processing of the temporal dimensions of relational memory. The functional similarities in the hippocampal pallium of taxa that diverged millions of years ago suggest the possibility that some features of the hippocampal networks allowing the processing of the spatial as well the temporal dimensions of relational associative memories appeared early in vertebrate evolution and were conserved through phylogenesis.

Keywords

medial palliumspatial memoryepisodic memoryrelational memoryhippocampal-dependent memorytrace classical conditioningteleost fishactinopterygians.
Type
Chapter
Information
Evolution of Learning and Memory Mechanisms , pp. 159 - 175
Publisher: Cambridge University Press
Print publication year: 2022

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