Evidence map›Paper›PMID 24477762›Full record

Trial reportExperimental brain research2014

Factors affecting grip force: anatomy, mechanics, and referent configurations.

Satyajit Ambike, Florent Paclet, Vladimir M Zatsiorsky, Mark L Latash

Abstract readRandomized Controlled Trial
In one paragraph

Trial report in Experimental brain research, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers.

0numbers the graph read from it
0cells of the map it votes in
34citing 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

34 citing papers in PubMed.

  1. Article
  2. Article
  3. Prefrontal Hierarchical Control of Corticomuscular Coherence in Stroke.IEEE transactions on neural systems and rehabilitation engineering : a publication of the IEEE Engineering in Medicine and Biology Society · 2026
    Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Review
  11. Unintentional force drifts in the lower extremities.Experimental brain research · 2023
    Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. 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

4 authors.

Satyajit AmbikeDepartment of Kinesiology, 39 Rec. Hall, The Pennsylvania State University, University Park, PA, 16802, USA, ssa17@psu.edu.
Florent Paclet
Vladimir M Zatsiorsky
Mark L Latash

Funding

THE ORGANIZATION OF A SIMPLE SYNERGYR01NS035032 · NINDS · PENNSYLVANIA STATE UNIVERSITY-UNIV PARK · PI LATASH, MARK L · 1997 to 2015
$4.3M
PREHENSION SYNERGIESR01AR048563 · NIAMS · PENNSYLVANIA STATE UNIVERSITY-UNIV PARK · PI LATASH, MARK L · 2003 to 2014
$3.2M
NIAMS NIH HHS R01 AR048563NINDS NIH HHS R01 NS035032
6 · The paper itself

Abstract

The extrinsic digit muscles naturally couple wrist action and grip force in prehensile tasks. We explored the effects of wrist position on the steady-state grip force and grip-force change during imposed changes in the grip aperture [apparent stiffness (AS)]. Subjects held an instrumented handle steady using a prismatic five-digit grip. The grip aperture was changed slowly, while the subjects were instructed not to react voluntarily to these changes. An increase in the aperture resulted in an increase in grip force, and its contraction resulted in a proportional drop in grip force. The AS values (between 4 and 6 N/cm) were consistent across a wide range of wrist positions. These values were larger when the subjects performed the task with eyes open as compared to eyes-closed trials. They were also larger for trials that started from a larger initial aperture. After a sequence of aperture increase and decrease to the initial width, grip force dropped by about 25% without the subjects being aware of this. We interpret the findings within the referent configuration hypothesis of grip-force production. The results support the idea of back-coupling between the referent and actual digit coordinates. According to this idea, the central nervous system defines referent coordinates for the digit tips, and the difference between the referent and actual coordinates leads to force production. If actual coordinates are not allowed to move to referent ones, referent coordinates show a relatively slow drift toward the actual ones.

Indexed as

AdultBiomechanical PhenomenaFemaleHand StrengthHumansMalePsychomotor PerformanceRange of Motion, ArticularYoung Adult

Identifiers

PMID24477762
PMCPMC4013148

What OpenQuestion holds

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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.