Evidence map›Paper›PMID 25887280›Full record

ArticleLearning & memory (Cold Spring Harbor, N.Y.)2015

The impact of odor-reward memory on chemotaxis in larval Drosophila.

Michael Schleyer, Samuel F Reid, Evren Pamir, Timo Saumweber, Emmanouil Paisios, Alexander Davies, Bertram Gerber, Matthieu Louis

Abstract read
In one paragraph

Article in Learning & memory (Cold Spring Harbor, N.Y.), 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
–field-weighted citation impact
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

20 citing papers in PubMed.

  1. Article
  2. Article
  3. Cognitive limits of larvalLearning & memory (Cold Spring Harbor, N.Y.) · 2024
    Article
  4. Rewarding Capacity of Optogenetically Activating a Giant GABAergic Central-Brain Interneuron in LarvalThe Journal of neuroscience : the official journal of the Society for Neuroscience · 2023
    Article
  5. Article
  6. Adaptation ofeLife · 2022
    Article
  7. Article
  8. Article
  9. Article
  10. Review
  11. Review
  12. Identification of Dopaminergic Neurons That Can Both Establish Associative Memory and Acutely Terminate Its Behavioral Expression.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2020
    Article
  13. Article
  14. One-trial learning in larvalLearning & memory (Cold Spring Harbor, N.Y.) · 2019
    Article
  15. Article
  16. Place learning overrides innate behaviors inLearning & memory (Cold Spring Harbor, N.Y.) · 2018
    Article
  17. Article
  18. Article
  19. Pavlovian Conditioning of LarvalFrontiers in behavioral neuroscience · 2017
    Article
  20. 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.

Michael SchleyerLeibniz Institute for Neurobiology (LIN), Department Genetics of Learning and Memory, 39118 Magdeburg, Germany.
Samuel F ReidEMBL/CRG Systems Biology Research Unit, Centre for Genomic Regulation (CRG), 08003 Barcelona, Spain Universitat Pompeu Fabra (UPF), 08003 Barcelona, Spain.
Evren PamirLeibniz Institute for Neurobiology (LIN), Department Genetics of Learning and Memory, 39118 Magdeburg, Germany.
Timo SaumweberLeibniz Institute for Neurobiology (LIN), Department Genetics of Learning and Memory, 39118 Magdeburg, Germany.
Emmanouil PaisiosLeibniz Institute for Neurobiology (LIN), Department Genetics of Learning and Memory, 39118 Magdeburg, Germany.
Alexander DaviesUniversity of Edinburgh, School of Informatics, Edinburgh EH8 9AB, United Kingdom.
Bertram GerberLeibniz Institute for Neurobiology (LIN), Department Genetics of Learning and Memory, 39118 Magdeburg, Germany Otto von Guericke University Magdeburg, Institute for Biology, Behavior Genetics, 39106 Magdeburg, Germany Center of Behavioural Brain Science (CBBS), Universitätsplatz 2, 39106 Magdeburg, Germany bertram.gerber@lin-magdeburg.de matthieu.louis@crg.eu.
Matthieu LouisEMBL/CRG Systems Biology Research Unit, Centre for Genomic Regulation (CRG), 08003 Barcelona, Spain Universitat Pompeu Fabra (UPF), 08003 Barcelona, Spain bertram.gerber@lin-magdeburg.de matthieu.louis@crg.eu.

Funding

Biotechnology and Biological Sciences Research Council BB/F529254/1Medical Research Council
6 · The paper itself

Abstract

How do animals adaptively integrate innate with learned behavioral tendencies? We tackle this question using chemotaxis as a paradigm. Chemotaxis in the Drosophila larva largely results from a sequence of runs and oriented turns. Thus, the larvae minimally need to determine (i) how fast to run, (ii) when to initiate a turn, and (iii) where to direct a turn. We first report how odor-source intensities modulate these decisions to bring about higher levels of chemotactic performance for higher odor-source intensities during innate chemotaxis. We then examine whether the same modulations are responsible for alterations of chemotactic performance by learned odor "valence" (understood throughout as level of attractiveness). We find that run speed (i) is neither modulated by the innate nor by the learned valence of an odor. Turn rate (ii), however, is modulated by both: the higher the innate or learned valence of the odor, the less often larvae turn whenever heading toward the odor source, and the more often they turn when heading away. Likewise, turning direction (iii) is modulated concordantly by innate and learned valence: turning is biased more strongly toward the odor source when either innate or learned valence is high. Using numerical simulations, we show that a modulation of both turn rate and of turning direction is sufficient to account for the empirically found differences in preference scores across experimental conditions. Our results suggest that innate and learned valence organize adaptive olfactory search behavior by their summed effects on turn rate and turning direction, but not on run speed. This work should aid studies into the neural mechanisms by which memory impacts specific aspects of behavior.

Indexed as

OdorantsRewardAnimalsBehavior, AnimalChemotaxisDrosophilaLarvaMemorySmell

Identifiers

PMID25887280
PMCPMC4408773

What OpenQuestion holds

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LicenceCC BY
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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.