Evidence map›Paper›PMID 26554046›Full record

ReviewPhilosophical transactions of the Royal Society of London. Series B, Biological sciences2015

Where is my mind? How sponges and placozoans may have lost neural cell types.

Joseph F Ryan, Marta Chiodin

Abstract readReview
In one paragraph

Review in Philosophical transactions of the Royal Society of London. Series B, Biological sciences, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 37 papers.

0numbers the graph read from it
0cells of the map it votes in
37citing 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

37 citing papers in PubMed.

  1. Article
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  3. Review
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  7. Evolution of Oligodendroglia and Myelin.Advances in neurobiology · 2025
    Review
  8. Article
  9. Article
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  11. Review
  12. Review
  13. Article
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  15. Growth produces coordination trade-offs inProceedings of the National Academy of Sciences of the United States of America · 2023
    Article
  16. Article
  17. Article
  18. Developmental processes in Ediacara macrofossils.Proceedings. Biological sciences · 2021
    Article
  19. Ectopic activation of GABANature ecology & evolution · 2021
    Article
  20. 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

2 authors.

Joseph F RyanWhitney Laboratory for Marine Bioscience, University of Florida, 9505 Ocean Shore Blvd, St Augustine, FL 32080, USA Department of Biology, University of Florida, Gainesville, FL 32611, USA joseph.ryan@whitney.ufl.edu.
Marta ChiodinWhitney Laboratory for Marine Bioscience, University of Florida, 9505 Ocean Shore Blvd, St Augustine, FL 32080, USA Department of Biology, University of Florida, Gainesville, FL 32611, USA.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Recent phylogenomic evidence suggests that ctenophores may be the sister group to the rest of animals. This phylogenetic arrangement opens the possibility that sponges and placozoans could have lost neural cell types or that the ctenophore nervous system evolved independently. We critically review evidence to date that has been put forth in support of independent evolution of neural cell types in ctenophores. We observe a reluctance in the literature to consider a lost nervous system in sponges and placozoans and suggest that this may be due to historical bias and the commonly misconstrued concept of animal complexity. In support of the idea of loss (or modification beyond recognition), we provide hypothetical scenarios to show how sponges and placozoans may have benefitted from the loss and/or modification of their neural cell types.

Indexed as

Biological EvolutionNervous SystemAnimalsNeuronsPlacozoaPoriferaanimal evolutionCtenophoralossnervous systemPlacozoaPorifera

Identifiers

PMID26554046
PMCPMC4650130

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.