Evidence map›Paper›PMID 18367610›Full record

ArticleThe Journal of neuroscience : the official journal of the Society for Neuroscience2008

Biomechanics of the vibrissa motor plant in rat: rhythmic whisking consists of triphasic neuromuscular activity.

Dan N Hill, Roberto Bermejo, H Philip Zeigler, David Kleinfeld

Open access · bronzeAbstract read
In one paragraph

Article in The Journal of neuroscience : the official journal of the Society for Neuroscience, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 86 papers.

0numbers the graph read from it
0cells of the map it votes in
86citing papers in PubMed
5.5field-weighted citation impact, top 4% 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

86 citing papers in PubMed, 154 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Diversity in Whisking-Related Dynamics of Layer 5 Neurons in the Motor Cortex.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2026
    Article
  5. Article
  6. Multiple cortical systems influence a single vibrissa muscle.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  7. Article
  8. Article
  9. Review
  10. Article
  11. Article
  12. Article
  13. Body language signals for rodent social communication.Current opinion in neurobiology · 2021
    Review
  14. Review
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. Article

26 more citing papers are in PubMed but not listed here.

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 at 3 institutions in 1 country.

Dan N HillDivision of Biological Sciences, University of California, San Diego, La Jolla, California 92093, USA.
Roberto Bermejo
H Philip Zeigler
David Kleinfeld
University of California, San Diego · USCity University of New York · USHunter College · US

Funding

Sensorimotor Loops in Vibrissa SomatosensationR01NS058668 · NINDS · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI KLEINFELD, DAVID · 2007 to 2016
$2.4M
WHISKING--INTEGRATION IN AN ACTIVE TOUCH SYSTEMR01NS037263 · NINDS · HUNTER COLLEGE · PI ZEIGLER, HARRIS · 1998 to 2001
$507k
NINDS NIH HHS NS058668NINDS NIH HHS NS37263NINDS NIH HHS R01 NS058668
6 · The paper itself

Abstract

The biomechanics of a motor plant constrain the behavioral strategies that an animal has available to extract information from its environment. We used the rat vibrissa system as a model for active sensing and determined the pattern of muscle activity that drives rhythmic exploratory whisking. Our approach made use of electromyography to measure the activation of all relevant muscles in both head-fixed and unrestrained rats and two-dimensional imaging to monitor the position of the vibrissae in head-fixed rats. Our essential finding is that the periodic motion of the vibrissae and mystacial pad during whisking results from three phases of muscle activity. First, the vibrissae are thrust forward as the rostral extrinsic muscle, musculus (m.) nasalis, contracts to pull the pad and initiate protraction. Second, late in protraction, the intrinsic muscles pivot the vibrissae farther forward. Third, retraction involves the cessation of m. nasalis and intrinsic muscle activity and the contraction of the caudal extrinsic muscles m. nasolabialis and m. maxillolabialis to pull the pad and the vibrissae backward. We developed a biomechanical model of the whisking motor plant that incorporates the measured muscular mechanics along with movement vectors observed from direct muscle stimulation in anesthetized rats. The results of simulations of the model quantify how the combination of extrinsic and intrinsic muscle activity leads to an enhanced range of vibrissa motion than would be available from the intrinsic muscles alone.

Indexed as

PeriodicityAnimalsBehavior, AnimalBiomechanical PhenomenaComputer SimulationConditioning, OperantElectric StimulationElectromyographyExploratory BehaviorFacial MusclesFemaleModels, BiologicalMovementNeural PathwaysPsychomotor PerformanceRats

Identifiers

PMID18367610
PMCPMC6670594
OpenAlexW1977821695

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.