Evidence map›Paper›PMID 34660677›Full record

ReviewFrontiers in surgery2021

Understanding Variable Motor Responses to Direct Electrical Stimulation of the Human Motor Cortex During Brain Surgery.

Daniel M Aaronson, Eduardo Martinez Del Campo, Timothy F Boerger, Brian Conway, Sarah Cornell, Matthew Tate, Wade M Mueller, Edward F Chang, Max O Krucoff

Abstract readReview
In one paragraph

Review in Frontiers in surgery, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing 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

13 citing papers in PubMed.

  1. Neuromotor modules revealed by direct electrical stimulation of the human primary motor cortex.Proceedings of the National Academy of Sciences of the United States of America · 2026
    Article
  2. Article
  3. Review
  4. Neural Mechanisms Underlying Robust Target Selection in Response to Microstimulation of the Oculomotor System.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2025
    Article
  5. Article
  6. Article
  7. Article
  8. Quantitative assessments of finger individuation with an instrumented glove.Journal of neuroengineering and rehabilitation · 2023
    Article
  9. Article
  10. Review
  11. Article
  12. Review
  13. 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

9 authors.

Daniel M AaronsonDepartment of Neurosurgery, Medical College of Wisconsin, Milwaukee, WI, United States.
Eduardo Martinez Del CampoDepartment of Neurosurgery, Medical College of Wisconsin, Milwaukee, WI, United States.
Timothy F BoergerDepartment of Neurosurgery, Medical College of Wisconsin, Milwaukee, WI, United States.
Brian ConwayMedical College of Wisconsin, Milwaukee, WI, United States.
Sarah CornellDepartment of Neurosurgery, Medical College of Wisconsin, Milwaukee, WI, United States.
Matthew TateDepartment of Neurosurgery, Feinberg School of Medicine, Northwestern University, Chicago, IL, United States.
Wade M MuellerDepartment of Neurosurgery, Medical College of Wisconsin, Milwaukee, WI, United States.
Edward F ChangDepartment of Neurosurgery, University of California, San Francisco, San Francisco, CA, United States.
Max O KrucoffDepartment of Neurosurgery, Medical College of Wisconsin, Milwaukee, WI, United States.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Direct electrical stimulation of the brain is the gold standard technique used to define functional-anatomical relationships during neurosurgical procedures. Areas that respond to stimulation are considered "critical nodes" of circuits that must remain intact for the subject to maintain the ability to perform certain functions, like moving and speaking. Despite its routine use, the neurophysiology underlying downstream motor responses to electrical stimulation of the brain, such as muscle contraction or movement arrest, is poorly understood. Furthermore, varying and sometimes counterintuitive responses can be seen depending on how and where the stimulation is applied, even within the human primary motor cortex. Therefore, here we review relevant neuroanatomy of the human motor system, provide a brief historical perspective on electrical brain stimulation, explore mechanistic variations in stimulation applications, examine neurophysiological properties of different parts of the motor system, and suggest areas of future research that can promote a better understanding of the interaction between electrical stimulation of the brain and its function.

Indexed as

brain mappingbrain stimulationcortical plasticitydirect electrical stimulation (DES)motor cortex

Identifiers

PMID34660677
PMCPMC8517489

What OpenQuestion holds

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Registered trials

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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.