Evidence map›Paper›PMID 34939925›Full record

ArticleeLife2021

Slowly evolving dopaminergic activity modulates the moment-to-moment probability of reward-related self-timed movements.

Allison E Hamilos, Giulia Spedicato, Ye Hong, Fangmiao Sun, Yulong Li, John A Assad

Open access · goldAbstract read
In one paragraph

Article in eLife, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 50 papers.

0numbers the graph read from it
0cells of the map it votes in
50citing papers in PubMed
5.8field-weighted citation impact, top 3% 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

50 citing papers in PubMed, 70 citations in OpenAlex.

  1. Calbindin stratifies midbrain dopaminergic neurons governing distinct aspects of locomotion.Proceedings of the National Academy of Sciences of the United States of America · 2026
    Article
  2. The Cellular and Synaptic Actions of Dopamine During Behavior.bioRxiv : the preprint server for biology · 2026
    Article
  3. Article
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  7. Spatiotemporally Distinct Dopamine Domains in the Hippocampus.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2026
    Article
  8. Article
  9. Article
  10. Midbrain Dopamine Warps Subjective Time via Threshold Setting But Not Clock Speed.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2026
    Article
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  18. Mesolimbic dopamine ramps reflect environmental timescales.bioRxiv : the preprint server for biology · 2025
    Article
  19. Article
  20. Review
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

6 authors at 2 institutions in 3 countries.

Allison E HamilosDepartment of Neurobiology, Harvard Medical School, Boston, United States.ORCID https://orcid.org/0000-0001-9486-0017
Giulia SpedicatoDepartment of Neurobiology, Harvard Medical School, Boston, United States.
Ye HongDepartment of Neurobiology, Harvard Medical School, Boston, United States.
Fangmiao SunState Key Laboratory of Membrane Biology, Peking University School of Life Science, Beijing, China.
Yulong LiState Key Laboratory of Membrane Biology, Peking University School of Life Science, Beijing, China.
John A AssadDepartment of Neurobiology, Harvard Medical School, Boston, United States.ORCID https://orcid.org/0000-0002-7689-5336
Harvard University · USPeking University · CN

Funding

Medical Scientist Training ProgramT32GM007753 · NIGMS · HARVARD UNIVERSITY (MEDICAL SCHOOL) · PI WALENSKY, LOREN DAVID · 1985 to 2021
$50.0M
Viral ModuleP30EY012196 · NEI · HARVARD UNIVERSITY (MEDICAL SCHOOL) · PI Gabriel Kreiman · 1998 to 2026
$21.3M
Towards a Unified Framework for Dopamine Signaling in the StriatumU19NS113201 · NINDS · HARVARD MEDICAL SCHOOL · PI SABATINI, BERNARDO L · 2019 to 2023
$18.7M
Medical Scientist Training ProgramT32GM144273 · NIGMS · HARVARD MEDICAL SCHOOL · PI David Shumway Jones, Jacqueline A. Lees · 2022 to 2026
$14.7M
Controlling the spatial extent of light-based monitoring and manipulation of neural activity in vivoUF1NS108177 · NINDS · HARVARD MEDICAL SCHOOL · PI ASSAD, JOHN, DEVITTORIO, MASSIMO · 2018 to 2018
$1.9M
NEI NIH HHS P30 EY012196NIGMS NIH HHS T32 GM007753NIGMS NIH HHS T32 GM144273NINDS NIH HHS U19 NS113201NINDS NIH HHS UF1 NS108177
6 · The paper itself

Abstract

Clues from human movement disorders have long suggested that the neurotransmitter dopamine plays a role in motor control, but how the endogenous dopaminergic system influences movement is unknown. Here, we examined the relationship between dopaminergic signaling and the timing of reward-related movements in mice. Animals were trained to initiate licking after a self-timed interval following a start-timing cue; reward was delivered in response to movements initiated after a criterion time. The movement time was variable from trial-to-trial, as expected from previous studies. Surprisingly, dopaminergic signals ramped-up over seconds between the start-timing cue and the self-timed movement, with variable dynamics that predicted the movement/reward time on single trials. Steeply rising signals preceded early lick-initiation, whereas slowly rising signals preceded later initiation. Higher baseline signals also predicted earlier self-timed movements. Optogenetic activation of dopamine neurons during self-timing did not trigger immediate movements, but rather caused systematic early-shifting of movement initiation, whereas inhibition caused late-shifting, as if modulating the probability of movement. Consistent with this view, the dynamics of the endogenous dopaminergic signals quantitatively predicted the moment-by-moment probability of movement initiation on single trials. We propose that ramping dopaminergic signals, likely encoding dynamic reward expectation, can modulate the decision of when to move.

Indexed as

Motor ActivityRewardAnimalsCuesDopamineDopaminergic NeuronsFemaleHumansMaleMiceMovementMovement DisordersProbabilityTime FactorsDopaminebasal gangliabehaviordopaminemousemovement initiationneurosciencerewardtiming

Identifiers

PMID34939925
PMCPMC8860451
OpenAlexW4200186209

What OpenQuestion holds

Textmetadata
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.