Cited by 51Memory and Neural MechanismsMemory Processes and InfluencesSleep and Wakefulness Research

Formation of long-term memory representation in human temporal cortex related to pictorial paired associates

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Yamashita, Ken-ichiro, Hirose, Satoshi, Kunimatsu, Akira, Aoki, Shigeki, Chikazoe, Junichi, Jimura, Koji, Masutani, Yoshitaka, Abe, Osamu +3 more·2009·The Journal of Neuroscience

Abstract

It is widely held that long-term memory gradually develops in the temporal neocortex after initial memory encoding into the hippocampus. However, little is known as to whether and where long-term memory can be newly created in the human temporal neocortex. In this functional magnetic resonance imaging study, we detected brain activity in the temporal neocortex that was developed approximately 8 weeks after study of unfamiliar pictorial paired associates. Two sets of paired Fourier figures were studied, one approximately 8 weeks before test and the other immediately before test, keeping the correct performance during the tests balanced across the two sets of stimuli. Significant signal increase was observed in the right hippocampus during retrieval of newly studied pairs relative to initially studied pairs. In contrast, significant signal increase was observed in the anterior temporal cortex during retrieval of initially studied pairs relative to newly studied pairs. The greater activity during retrieval of older memory developed in the temporal neocortex provides direct evidence of formation of temporal neocortical representation for stable long-term memory.

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Authors
Yamashita, K.-I., Hirose, S., Kunimatsu, A., Aoki, S., Chikazoe, J., Jimura, K., Masutani, Y., Abe, O., Ohtomo, K., Miyashita, Y., & Konishi, S.
Affiliations
The University of Tokyo (JP)
Venue
The Journal of Neuroscience
Published
2009-08-19
Volume
29
Issue
33
Pages
10335-10340
ISSN
  • 0270-6474 (ISSN-L)
  • 1529-2401
OpenAlex
W2001316823
Cited by
51
References
52
Citations by year
2026: 1 · 2025: 3 · 2024: 7 · 2023: 4 · 2022: 4 · 2021: 3 · 2020: 1 · 2019: 5 · 2018: 3 · 2017: 5 · 2016: 4 · 2015: 4 · 2014: 1 · 2013: 1 · 2012: 1
FWCI
0.81
Type
journal article
Language
en
Open access
Locations
  • Journal of Neuroscience (publishedVersion, cc-by-nc-sa)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
Japan Society for the Promotion of Science (19002010, 17500203)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory Processes and Influences
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Sleep and Wakefulness Research
Keywords
long-term memory, temporal neocortex, hippocampus, paired associates, memory encoding, memory retrieval, anterior temporal cortex, memory consolidation, pictorial stimuli, human memory
MeSH terms
Adult, Female, Humans, Magnetic Resonance Imaging, Male, Memory, Photic Stimulation, Temporal Lobe, Time Factors, Visual Perception, Young Adult

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