Abstract
This chapter focuses on possible computational functions of hippocampal replay. First, we briefly review essential data and theories on the function of the hippocampus in long-term memory, focusing on its proposed role in memory consolidation. We then describe a combined hippocampal-neocortical model which allows the simultaneous but distinct treatment of episodic and semantic information and study the relationship between hippocampally initiated replay and different aspects (storage, access, and decoding) of long-term declarative memory in the face of representational change. We show that replay may not provide a plausible way to establish in neocortex durable episodic memories which are independent of the hippocampus. We then turn to the question of maintaining access to episodes in the presence of the hippocampus and demonstrate a possible role for replay in this process. Finally, we examine the acquisition, consolidation, and maintenance of general semantic information and compare it with episodic memory. The last part of the chapter describes our recent efforts aimed at the identification, using combined physiological and modeling tools, of cellular and network mechanisms of the generation of hippocampal sharp wave-ripples and associated replay of neuronal activity sequences.
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Káli, S. (2015). Off-Line Replay and Hippocampal-Neocortical Interaction. In: Tatsuno, M. (eds) Analysis and Modeling of Coordinated Multi-neuronal Activity. Springer Series in Computational Neuroscience, vol 12. Springer, New York, NY. https://doi.org/10.1007/978-1-4939-1969-7_15
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