Evidence map›Paper›PMID 34312223›Full record

ArticleThe Journal of neuroscience : the official journal of the Society for Neuroscience2021

Combining Repetition Suppression and Pattern Analysis Provides New Insights into the Role of M1 and Parietal Areas in Skilled Sequential Actions.

Eva Berlot, Nicola J Popp, Scott T Grafton, Jörn Diedrichsen

Abstract read
In one paragraph

Article in The Journal of neuroscience : the official journal of the Society for Neuroscience, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed, 1 pooled it
–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

12 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Sensory basis of speech motor learning and memory.Proceedings of the National Academy of Sciences of the United States of America · 2026
    Article
  3. Brain activation for actual and imagined hand movement following bilateral hand transplantation.Cortex; a journal devoted to the study of the nervous system and behavior · 2025
    Article
  4. Article
  5. Motor Sequence Learning Involves Better Prediction of the Next Action and Optimization of Movement Trajectories.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2025
    Article
  6. Cortical Areas for Planning Sequences before and during Movement.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2025
    Article
  7. The Hippocampus Preorders Movements for Skilled Action Sequences.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2024
    Article
  8. Article
  9. Neural Correlates of Online Action Preparation.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2024
    Article
  10. Diminished Repetition Suppression Reveals Selective and Systems-Level Face Processing Differences in ASD.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2023
    Article
  11. Cortical Patterns Shift from Sequence Feature Separation during Planning to Integration during Motor Execution.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2023
    Article
  12. 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

4 authors.

Eva BerlotThe Brain and Mind Institute, University of Western Ontario, London, Ontario N6A 5B7, Canada.ORCID 0000-0002-2605-1741
Nicola J PoppThe Brain and Mind Institute, University of Western Ontario, London, Ontario N6A 5B7, Canada.
Scott T GraftonDepartment of Psychological and Brain Sciences, University of California, Santa Barbara, California 93106.ORCID 0000-0003-4015-3151
Jörn DiedrichsenThe Brain and Mind Institute, University of Western Ontario, London, Ontario N6A 5B7, Canada jdiedric@uwo.ca.ORCID 0000-0003-0264-8532

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

How does the brain change during learning? In functional magnetic resonance imaging (fMRI) studies, both multivariate pattern analysis (MVPA) and repetition suppression (RS) have been used to detect changes in neuronal representations. In the context of motor sequence learning, the two techniques have provided discrepant findings: pattern analysis showed that only premotor and parietal regions, but not primary motor cortex (M1), develop a representation of trained sequences. In contrast, RS suggested trained sequence representations in all these regions. Here, we applied both analysis techniques to a five-week finger sequence training study, in which participants executed each sequence twice before switching to a different sequence. Both RS and pattern analysis indicated learning-related changes for parietal areas, but only RS showed a difference between trained and untrained sequences in M1. A more fine-grained analysis, however, revealed that the RS effect in M1 reflects a fundamentally different process than in parietal areas. On the first execution, M1 represents especially the first finger of each sequence, likely reflecting preparatory processes. This effect dramatically reduces during the second execution. In contrast, parietal areas represent the identity of a sequence, and this representation stays relatively stable on the second execution. These results suggest that the RS effect does not reflect a trained sequence representation in M1, but rather a preparatory signal for movement initiation. More generally, our study demonstrates that across regions RS can reflect different representational changes in the neuronal population code, emphasizing the importance of combining pattern analysis and RS techniques.

Indexed as

AdolescentAdultBrain MappingFemaleFingersHumansLearningMagnetic Resonance ImagingMaleMotor CortexMovementPsychomotor PerformanceYoung AdultfMRIM1motor learningMVPArepetition suppression

Identifiers

PMID34312223
PMCPMC8425980

What OpenQuestion holds

Textmetadata
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.