Evidence map›Paper›PMID 20029182›Full record

ReviewBrain, behavior and evolution2009

On the independent origins of complex brains and neurons.

Leonid L Moroz

Open access · bronzeAbstract readReview
In one paragraph

Review in Brain, behavior and evolution, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 95 papers.

0numbers the graph read from it
0cells of the map it votes in
95citing papers in PubMed
11.5field-weighted citation impact, top 2% 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

95 citing papers in PubMed, 213 citations in OpenAlex.

  1. Review
  2. Article
  3. Article
  4. TheBiomimetics (Basel, Switzerland) · 2025
    Article
  5. Roots and early routes of neuroendocrinology.Cell and tissue research · 2025
    Review
  6. Review
  7. Review
  8. Making Neurobots and Chimerical Ctenophores.bioRxiv : the preprint server for biology · 2024
    Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Review
  14. Article
  15. Article
  16. Parallel Evolution of Transcription Factors in Basal Metazoans.Methods in molecular biology (Clifton, N.J.) · 2024
    Article
  17. Article
  18. Brief History of Ctenophora.Methods in molecular biology (Clifton, N.J.) · 2024
    Review
  19. Article
  20. Nitric oxide suppresses cilia activity in ctenophores.bioRxiv : the preprint server for biology · 2023
    Article

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

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

1 author at 1 institution in 1 country.

Leonid L MorozDepartment of Neuroscience and McKnight Brain Institute, Gainesville, Fla., USA. moroz@whitney.ufl.edu
Allen Institute for Brain Science · US

Funding

Genomic Dissection of Circuit DynamicsR21RR025699 · NCRR · UNIVERSITY OF FLORIDA · PI BUCHER, DIRK MARTIN, MOROZ, LEONID L · 2009 to 2010
$408k
NCRR NIH HHS R21 RR025699NCRR NIH HHS R21RR025699NINDS NIH HHS 1R01NS06076
6 · The paper itself

Abstract

Analysis of the origin and evolution of neurons is crucial for revealing principles of organization of neural circuits with unexpected implications for genomic sciences, biomedical applications and regenerative medicine. This article presents an overview of some controversial ideas about the origin and evolution of neurons and nervous systems, focusing on the independent origin of complex brains and possible independent origins of neurons. First, earlier hypotheses related to the origin of neurons are summarized. Second, the diversity of nervous systems and convergent evolution of complex brains in relation to current views about animal phylogeny is discussed. Third, the lineages of molluscs and basal metazoans are used as illustrated examples of multiple origins of complex brains and neurons. Finally, a hypothesis about the independent origin of complex brains, centralized nervous systems and neurons is outlined. Injury-associated mechanisms leading to secretion of signal peptides (and related molecules) can be considered as evolutionary predecessors of inter-neuronal signaling and the major factors in the appearance of neurons in the first place.

Indexed as

Biological EvolutionModels, BiologicalAnimalsBrainMolluscaNeurons

Identifiers

PMID20029182
PMCPMC2855278
OpenAlexW2073642997

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.