Evidence map›Paper›PMID 34050009›Full record

Trial reportProceedings of the National Academy of Sciences of the United States of America2021

Diversity-enabled sweet spots in layered architectures and speed-accuracy trade-offs in sensorimotor control.

Yorie Nakahira, Quanying Liu, Terrence J Sejnowski, John C Doyle

Open access · bronzeAbstract readClinical Trial
In one paragraph

Trial report in Proceedings of the National Academy of Sciences of the United States of America, 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
0.6field-weighted citation impact, top 39% 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

13 citing papers in PubMed, 12 citations in OpenAlex.

  1. Diversity-enabled sweet spots in layered architectures and speed-accuracy trade-offs in sensorimotor control.Proceedings of the National Academy of Sciences of the United States of America · 2021
    Trial
  2. Article
  3. Article
  4. Article
  5. Optimal reaching subject to computational and physical constraints reveals structure of the sensorimotor control system.Proceedings of the National Academy of Sciences of the United States of America · 2024
    Article
  6. Internal feedback in the cortical perception-action loop enables fast and accurate behavior.Proceedings of the National Academy of Sciences of the United States of America · 2023
    Article
  7. Article
  8. Article
  9. Article
  10. Scaffolding layered control architectures through constraint closure: insights into brain evolution and development.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2022
    Article
  11. Article
  12. The unreasonable effectiveness of deep learning in artificial intelligence.Proceedings of the National Academy of Sciences of the United States of America · 2020
    Article
  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

4 authors at 2 institutions in 2 countries.

Yorie NakahiraElectrical and Computer Engineering, College of Engineering, Carnegie Mellon University, Pittsburgh, PA 15213.ORCID 0000-0003-3324-4602
Quanying LiuControl and Dynamical Systems, Division of Engineering and Applied Science, California Institute of Technology, Pasadena, CA 91125.ORCID 0000-0002-2501-7656
Terrence J SejnowskiComputational Neurobiology Laboratory, The Salk Institute for Biological Studies, La Jolla, CA 92037; terry@salk.edu doyle@caltech.edu.ORCID 0000-0002-0622-7391
John C DoyleControl and Dynamical Systems, Division of Engineering and Applied Science, California Institute of Technology, Pasadena, CA 91125; terry@salk.edu doyle@caltech.edu.ORCID 0000-0002-1828-2486
California Institute of Technology · USSalk Institute for Biological Studies · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Nervous systems sense, communicate, compute, and actuate movement using distributed components with severe trade-offs in speed, accuracy, sparsity, noise, and saturation. Nevertheless, brains achieve remarkably fast, accurate, and robust control performance due to a highly effective layered control architecture. Here, we introduce a driving task to study how a mountain biker mitigates the immediate disturbance of trail bumps and responds to changes in trail direction. We manipulated the time delays and accuracy of the control input from the wheel as a surrogate for manipulating the characteristics of neurons in the control loop. The observed speed-accuracy trade-offs motivated a theoretical framework consisting of two layers of control loops-a fast, but inaccurate, reflexive layer that corrects for bumps and a slow, but accurate, planning layer that computes the trajectory to follow-each with components having diverse speeds and accuracies within each physical level, such as nerve bundles containing axons with a wide range of sizes. Our model explains why the errors from two control loops are additive and shows how the errors in each control loop can be decomposed into the errors caused by the limited speeds and accuracies of the components. These results demonstrate that an appropriate diversity in the properties of neurons across layers helps to create "diversity-enabled sweet spots," so that both fast and accurate control is achieved using slow or inaccurate components.

Indexed as

Models, BiologicalAdultHumansMaleMovementPsychomotor PerformanceReaction Timedistributed controllayered architecturesensorimotor controlspeed–accuracy trade-offvestibulo-ocular reflex

Identifiers

PMID34050009
PMCPMC8179159
OpenAlexW2974141429

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.