Evidence map›Paper›PMID 28270619›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2017

Massive increase in visual range preceded the origin of terrestrial vertebrates.

Malcolm A MacIver, Lars Schmitz, Ugurcan Mugan, Todd D Murphey, Curtis D Mobley

Open access · bronzeAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 45 papers.

0numbers the graph read from it
0cells of the map it votes in
45citing papers in PubMed
17.3field-weighted citation impact, top 1% 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

45 citing papers in PubMed, 106 citations in OpenAlex.

  1. Article
  2. Article
  3. Review
  4. Sound reasons for tympanic hearing in mammalian precursors.Proceedings of the National Academy of Sciences of the United States of America · 2026
    Article
  5. Article
  6. Article
  7. Article
  8. Review
  9. Article
  10. Article
  11. A short natural history of mental time travels: a journey still travelled?Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2024
    Article
  12. Article
  13. The origin of blinking in both mudskippers and tetrapods is linked to life on land.Proceedings of the National Academy of Sciences of the United States of America · 2023
    Article
  14. Article
  15. Review
  16. Complementary feedback control enables effective gaze stabilization in animals.Proceedings of the National Academy of Sciences of the United States of America · 2022
    Article
  17. The neuroecology of the water-to-land transition and the evolution of the vertebrate brain.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2022
    Article
  18. Evolution of behavioural control from chordates to primates.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2022
    Article
  19. Neuroscience needs evolution.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2022
    Article
  20. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

5 authors at 3 institutions in 1 country.

Malcolm A MacIverThe Neuroscience and Robotics Laboratory, Northwestern University, Evanston, IL 60208; maciver@northwestern.edu lschmitz@kecksci.claremont.edu.
Lars SchmitzW. M. Keck Science Department, Claremont McKenna, Pitzer, and Scripps Colleges, Claremont, CA 91711; maciver@northwestern.edu lschmitz@kecksci.claremont.edu.
Ugurcan MuganDepartment of Biomedical Engineering, Northwestern University, Evanston, IL 60208.
Todd D MurpheyDepartment of Mechanical Engineering, Northwestern University, Evanston, IL 60208.
Curtis D MobleySection for Optical Oceanography, Sequoia Scientific, Inc., Bellevue, WA 98005.
Northwestern University · USNatural History Museum of Los Angeles County · USSequoia Scientific (United States) · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The evolution of terrestrial vertebrates, starting around 385 million years ago, is an iconic moment in evolution that brings to mind images of fish transforming into four-legged animals. Here, we show that this radical change in body shape was preceded by an equally dramatic change in sensory abilities akin to transitioning from seeing over short distances in a dense fog to seeing over long distances on a clear day. Measurements of eye sockets and simulations of their evolution show that eyes nearly tripled in size just before vertebrates began living on land. Computational simulations of these animal's visual ecology show that for viewing objects through water, the increase in eye size provided a negligible increase in performance. However, when viewing objects through air, the increase in eye size provided a large increase in performance. The jump in eye size was, therefore, unlikely to have arisen for seeing through water and instead points to an unexpected hybrid of seeing through air while still primarily inhabiting water. Our results and several anatomical innovations arising at the same time suggest lifestyle similarity to crocodiles. The consequent combination of the increase in eye size and vision through air would have conferred a 1 million-fold increase in the amount of space within which objects could be seen. The "buena vista" hypothesis that our data suggest is that seeing opportunities from afar played a role in the subsequent evolution of fully terrestrial limbs as well as the emergence of elaborated action sequences through planning circuits in the nervous system.

Indexed as

Biological EvolutionAnimalsEcosystemEyeOcular Physiological PhenomenaOrgan SizePhylogenyVertebratesVision, Ocularfish–tetrapod transitionprospective cognitionterrestrialityvisionvisual ecology

Identifiers

PMID28270619
PMCPMC5373340
OpenAlexW2593132368

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.