Literature DB >> 21775513

Associative retrieval processes in the human medial temporal lobe: hippocampal retrieval success and CA1 mismatch detection.

Janice Chen1, Rosanna K Olsen, Alison R Preston, Gary H Glover, Anthony D Wagner.   

Abstract

Hippocampal subfields CA(3) and CA(1) are hypothesized to differentially support the generation of associative predictions and the detection of associative mismatches, respectively. Using high-resolution functional MRI, we examined hippocampal subfield activation during associative retrieval and during subsequent comparisons of memory to matching or mismatching decision probes. Activity in the dentate gyrus/CA(2/3), CA(1), and other medial temporal lobe subregions tracked associative retrieval success, whereas activity in CA(1) and the perirhinal cortex tracked the presence of associative mismatches. These data support the hypothesis that CA(1) acts as a "comparator," detecting when memory for the past and sensory input in the present diverge.

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Mesh：

Year:  2011        PMID： 21775513      PMCID： PMC3256570          DOI： 10.1101/lm.2135211

Source DB:  PubMed          Journal:  Learn Mem        ISSN： 1072-0502            Impact factor:   2.460


  44 in total

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Review 8.  The hippocampal-VTA loop: controlling the entry of information into long-term memory.

Authors:  John E Lisman; Anthony A Grace
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9.  Integrating memories in the human brain: hippocampal-midbrain encoding of overlapping events.

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Authors:  Dharshan Kumaran; Eleanor A Maguire
Journal:  J Neurosci       Date:  2007-08-08       Impact factor: 6.167
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  54 in total

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2.  Hippocampus Guides Adaptive Learning during Dynamic Social Interactions.

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Authors:  Thackery I Brown; Michael E Hasselmo; Chantal E Stern
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6.  Pattern Separation Underpins Expectation-Modulated Memory.

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7.  Complementary roles of human hippocampal subfields in differentiation and integration of spatial context.

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9.  Prediction strength modulates responses in human area CA1 to sequence violations.

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10.  Memory-related hippocampal activation in the sleeping toddler.

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