Evidence map›Paper›PMID 36475440›Full record

ArticleProceedings. Biological sciences2022

Musculoskeletal wing-actuation model of hummingbirds predicts diverse effects of primary flight muscles in hovering flight.

Suyash Agrawal, Bret W Tobalske, Zafar Anwar, Haoxiang Luo, Tyson L Hedrick, Bo Cheng

Open access · bronzeAbstract read
In one paragraph

Article in Proceedings. Biological sciences, 2022. 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
8.0field-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

6 citing papers in PubMed, 16 citations in OpenAlex.

  1. Article
  2. Soft tissue constraints on joint mobility in the avian shoulder.The Journal of experimental biology · 2025
    Article
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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 4 institutions in 1 country.

Suyash AgrawalDepartment of Mechanical Engineering, Pennsylvania State University, University Park, PA 16802, USA.
Bret W TobalskeDivision of Biological Sciences, University of Montana, Missoula, MT 59812, USA.
Zafar AnwarDepartment of Mechanical Engineering, Pennsylvania State University, University Park, PA 16802, USA.ORCID 0000-0003-1040-3105
Haoxiang LuoDepartment of Mechanical Engineering, Vanderbilt University, Nashville, TN 37235, USA.
Tyson L HedrickDepartment of Biology, University of North Carolina, Chapel Hill, NC 27599, USA.ORCID 0000-0002-6573-9602
Bo ChengDepartment of Mechanical Engineering, Pennsylvania State University, University Park, PA 16802, USA.ORCID 0000-0002-6982-0811
Pennsylvania State University · USUniversity of Montana · USUniversity of North Carolina at Chapel Hill · USVanderbilt University · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Hummingbirds have evolved to hover and manoeuvre with exceptional flight control. This is enabled by their musculoskeletal system that successfully exploits the agile motion of flapping wings. Here, we synthesize existing empirical and modelling data to generate novel hypotheses for principles of hummingbird wing actuation. These may help guide future experimental work and provide insights into the evolution and robotic emulation of hummingbird flight. We develop a functional model of the hummingbird musculoskeletal system, which predicts instantaneous, three-dimensional torque produced by primary (pectoralis and supracoracoideus) and combined secondary muscles. The model also predicts primary muscle contractile behaviour, including stress, strain, elasticity and work. Results suggest that the primary muscles (i.e. the flight 'engine') function as diverse effectors, as they do not simply power the stroke, but also actively deviate and pitch the wing with comparable actuation torque. The results also suggest that the secondary muscles produce controlled-tightening effects by acting against primary muscles in deviation and pitching. The diverse effects of the pectoralis are associated with the evolution of a comparatively enormous bicipital crest on the humerus.

Indexed as

Musculoskeletal SystemMusclesbioinspired roboticsflapping flighthummingbirdmuscle contractile behaviourmusculoskeletal system

Identifiers

PMID36475440
PMCPMC9727662
OpenAlexW4311719626

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.