Evidence map›Paper›PMID 30333210›Full record

ArticleProceedings. Biological sciences2018

Bearded capuchin monkeys use joint synergies to stabilize the hammer trajectory while cracking nuts in bipedal stance.

Madhur Mangalam, Robert Rein, Dorothy Munkenbeck Fragaszy

Abstract read
In one paragraph

Article in Proceedings. Biological sciences, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing 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

6 citing papers in PubMed.

  1. Moving.American journal of primatology · 2025
    Article
  2. How bipedalism shapes humans' actions with hand tools.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2024
    Review
  3. One more time about motor (and non-motor) synergies.Experimental brain research · 2021
    Review
  4. Article
  5. Article
  6. 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

3 authors.

Madhur MangalamDepartment of Psychology, University of Georgia, Athens, GA 30602, USA madhur.mangalam@uga.edu.ORCID 0000-0001-6369-0414
Robert ReinInstitute of Training and Computer Science in Sports, German Sport University Cologne, 50933 Cologne, Germany.
Dorothy Munkenbeck FragaszyDepartment of Psychology, University of Georgia, Athens, GA 30602, USA.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The transition from occasional to obligate bipedalism is a milestone in human evolution. However, because the fossil record is fragmentary and reconstructing behaviour from fossils is difficult, changes in the motor control strategies that accompanied this transition remain unknown. Quadrupedal primates that adopt a bipedal stance while using percussive tools provide a unique reference point to clarify one aspect of this transition, which is maintaining bipedal stance while handling massive objects. We found that while cracking nuts using massive stone hammers, wild bearded capuchin monkeys (

Indexed as

PostureTool Use BehaviorAnimalsBiomechanical PhenomenaBrazilCebinaeJointsNutsmotor controlmovement coordinationnut crackingSapajus libidinosustoolinguncontrolled manifold analysis

Identifiers

PMID30333210
PMCPMC6234892

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.