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Updated: Jul 6, 2026
13:51
Cross-Modal Multivariate Pattern Analysis
Published on: November 9, 2011
Towards understanding of the cortical network underlying associative memory
Takahiro Osada1, Yusuke Adachi, Hiroko M Kimura
1Department of Physiology, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, Japan. osada@m.u-tokyo.ac.jp
Summary
Memory recall involves reactivating neural representations in the association cortex. Two retrieval signals, automatic (from medial temporal lobe) and active (top-down from prefrontal cortex), orchestrate memory retrieval.
Area of Science:
- Neuroscience
- Cognitive Science
Background:
- Declarative knowledge and experiences are stored in the association cortex.
- Memory recall relies on the reactivation of neural representations.
- Associations between visual objects form in temporal and limbic cortices.
Purpose of the Study:
- To elucidate the neural mechanisms underlying memory retrieval.
- To explore the interaction between cortical areas in memory orchestration.
- To understand how local neural circuits contribute to memory functions.
Main Methods:
- Electrophysiological experiments to study neural representations.
- Investigating automatic retrieval signals from the medial temporal lobe.
- Analyzing active retrieval signals originating from the prefrontal cortex.
Main Results:
- Identified two distinct retrieval signal pathways: automatic and active.
- Demonstrated the prefrontal cortex's role in active memory retrieval strategies.
- Highlighted the importance of neural circuit reorganization in memory trace formation.
Conclusions:
- Memory retrieval is orchestrated by interactions within a brain-wide network.
- Both network-level interactions and local circuit properties are crucial for memory.
- New methodologies are emerging to address these complex neural mechanisms.
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Classical conditioning, also known...
Classical conditioning, also known...
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Motor Areas
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