The hippocampus: A central node in a large-scale brain network for memory

Revue neurologique
J Huijgen, S Samson

Abstract

The medial temporal lobe is a key region in the formation and consolidation of conscious or declarative memories. In this review, we will first consider the role of the hippocampus and its surrounding medial temporal lobe structures in recognition memory from a historical perspective. According to the dual process model of recognition memory, recognition judgments can be based on the recollection of details about previous presented stimuli or on the feeling of familiarity. Studies in humans, primates and rodents suggest that the hippocampus, the parahippocampal cortex and the perirhinal cortex play different roles in recollection and familiarity. Then, we will describe the role of the hippocampus and neocortex in memory consolidation: a process in which novel memories become integrated into long-term memory. After presenting possible mechanisms underlying sleep-dependent declarative memory consolidation, we will discuss the phenomenon of accelerated long-term forgetting. This type of memory deficit is often observed in epileptic patients with a hippocampal lesion, and provides a novel opportunity to investigate post-encoding and memory consolidation processes.

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Citations

Jul 26, 2016·Frontiers in Psychology·Manuela Macedonia, Karsten Mueller
Mar 5, 2019·Psychophysiology·Sonalee A JoshiIsrael Liberzon
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Jun 1, 2021·Psychogeriatrics : the Official Journal of the Japanese Psychogeriatric Society·Tatsuya YamaguchiMasaru Mimura
Jul 25, 2021·Behavioural Brain Research·Adaneuda Silva Britto SampaioRaquel Simoni Pires

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