Evidence map›Paper›PMID 26639399›Full record

ArticleScientific reports2015

Self-directed exploration provides a Ncs1-dependent learning bonus.

Ho-Suk Mun, Bechara J Saab, Enoch Ng, Alexander McGirr, Tatiana V Lipina, Yoichi Gondo, John Georgiou, John C Roder

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
1.7field-weighted citation impact, top 17% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

15 citing papers in PubMed, 34 citations in OpenAlex.

  1. Article
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  3. PDE4B Missense Variant Increases Susceptibility to Post-traumatic Stress Disorder-Relevant Phenotypes in Mice.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2024
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  4. Exploratory Rearing Is Governed by Hypothalamic Melanin-Concentrating Hormone Neurons According to Locus Ceruleus.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2024
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  5. A Dual Effect of Dopamine on Hippocampal LTP and Cognitive Functions in Control and Kindled Mice.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2024
    Article
  6. Article
  7. Article
  8. Review
  9. Article
  10. Emerging Roles of Neuronal CaFrontiers in molecular neuroscience · 2019
    Review
  11. NCS-1 is a regulator of calcium signaling in health and disease.Biochimica et biophysica acta. Molecular cell research · 2018
    Review
  12. Article
  13. Article
  14. A Closer Look at the Hippocampus and Memory.Trends in cognitive sciences · 2017
    Review
  15. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors at 6 institutions in 4 countries.

Ho-Suk MunLunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, ON, M5G 1X5, Canada.
Bechara J SaabLunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, ON, M5G 1X5, Canada.
Enoch NgLunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, ON, M5G 1X5, Canada.
Alexander McGirrLunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, ON, M5G 1X5, Canada.
Tatiana V LipinaFederal State Budgetary Scientific Institution, Scientific Research Institute of Physiology and Basic Medicine, Novosibirsk, 630117, Russia.
Yoichi GondoMutagenesis and Genomics Team, RIKEN BioResource Center, Tsukuba 305-0074, Japan.
John GeorgiouLunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, ON, M5G 1X5, Canada.
John C RoderLunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, ON, M5G 1X5, Canada.
Lunenfeld-Tanenbaum Research Institute · CAMount Sinai Hospital · CAInstitute of Physiology and Basic Medicine · RURIKEN BioResource Research Center · JPUniversity of Toronto · CAUniversity of Zurich · CH

Funding

Canadian Institutes of Health Research 147865Canadian Institutes of Health Research MOP111198
6 · The paper itself

Abstract

Understanding the mechanisms of memory formation is fundamental to establishing optimal educational practices and restoring cognitive function in brain disease. Here, we show for the first time in a non-primate species, that spatial learning receives a special bonus from self-directed exploration. In contrast, when exploration is escape-oriented, or when the full repertoire of exploratory behaviors is reduced, no learning bonus occurs. These findings permitted the first molecular and cellular examinations into the coupling of exploration to learning. We found elevated expression of neuronal calcium sensor 1 (Ncs1) and dopamine type-2 receptors upon self-directed exploration, in concert with increased neuronal activity in the hippocampal dentate gyrus and area CA3, as well as the nucleus accumbens. We probed further into the learning bonus by developing a point mutant mouse (Ncs1(P144S/P144S)) harboring a destabilized NCS-1 protein, and found this line lacked the equivalent self-directed exploration learning bonus. Acute knock-down of Ncs1 in the hippocampus also decoupled exploration from efficient learning. These results are potentially relevant for augmenting learning and memory in health and disease, and provide the basis for further molecular and circuit analyses in this direction.

Indexed as

Exploratory BehaviorLearningAnimalsCA3 Region, HippocampalDentate GyrusEnvironmentGene Knockdown TechniquesMaleMice, Inbred C57BLNeuronal Calcium-Sensor ProteinsNeuropeptidesNucleus AccumbensProto-Oncogene Proteins c-fosReceptors, Dopamine D2Spatial MemoryDRD2 protein, mousefrequenin calcium sensor proteinsNeuronal Calcium-Sensor ProteinsNeuropeptidesProto-Oncogene Proteins c-fosReceptors, Dopamine D2

Identifiers

PMID26639399
PMCPMC4671055
OpenAlexW2442940041

What OpenQuestion holds

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LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.