ReviewProceedings of the National Academy of Sciences of the United States of America2012
Evolution of centralized nervous systems: two schools of evolutionary thought.
Review in Proceedings of the National Academy of Sciences of the United States of America, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 52 papers.
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52 citing papers in PubMed.
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- Optokinetic response in D. melanogaster reveals the nature of common repellent odorants.Scientific reports · 2024Article
- The development of the adult nervous system in the annelid Owenia fusiformis.Neural development · 2024Article
- Article
- Evolution of cephalopod nervous systems.Current biology : CB · 2023Review
- Phylogenetic tracing of midbrain-specific regulatory sequences suggests single origin of eubilaterian brains.Science advances · 2023Article
- Exploration of the Core Pathways and Potential Targets of Luteolin Treatment on Late-Onset Depression Based on Cerebrospinal Fluid Proteomics.International journal of molecular sciences · 2023Article
- Recovery-from-extinction effects in an anuran amphibian: renewal effect, but no reinstatement.Animal cognition · 2022Article
- Evolution of behavioural control from chordates to primates.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2022Article
- Humans, fish, spiders and bees inherited working memory and attention from their last common ancestor.Frontiers in psychology · 2022Article
- Detailed morphology of tentacular apparatus and central nervous system in Owenia borealis (Annelida, Oweniidae).Zoological letters · 2021Article
- A Traditional Scientific Perspective on the Integrated Information Theory of Consciousness.Entropy (Basel, Switzerland) · 2021Article
- Debunking a myth: plant consciousness.Protoplasma · 2021Review
- An Interesting Molecule: γ-Aminobutyric Acid. What Can We Learn from Hydra Polyps?Brain sciences · 2021Article
- Multiple Routes to Animal Consciousness: Constrained Multiple Realizability Rather Than Modest Identity Theory.Frontiers in psychology · 2021Article
- Five Breakthroughs: A First Approximation of Brain Evolution From Early Bilaterians to Humans.Frontiers in neuroanatomy · 2021Article
- Dopamine as a Multifunctional Neurotransmitter in Gastropod Molluscs: An Evolutionary Hypothesis.The Biological bulletin · 2020Review
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Abstract
Understanding the evolution of centralized nervous systems requires an understanding of metazoan phylogenetic interrelationships, their fossil record, the variation in their cephalic neural characters, and the development of these characters. Each of these topics involves comparative approaches, and both cladistic and phenetic methodologies have been applied. Our understanding of metazoan phylogeny has increased greatly with the cladistic analysis of molecular data, and relaxed molecular clocks generally date the origin of bilaterians at 600-700 Mya (during the Ediacaran). Although the taxonomic affinities of the Ediacaran biota remain uncertain, a conservative interpretation suggests that a number of these taxa form clades that are closely related, if not stem clades of bilaterian crown clades. Analysis of brain-body complexity among extant bilaterians indicates that diffuse nerve nets and possibly, ganglionated cephalic neural systems existed in Ediacaran organisms. An outgroup analysis of cephalic neural characters among extant metazoans also indicates that the last common bilaterian ancestor possessed a diffuse nerve plexus and that brains evolved independently at least four times. In contrast, the hypothesis of a tripartite brain, based primarily on phenetic analysis of developmental genetic data, indicates that the brain arose in the last common bilaterian ancestor. Hopefully, this debate will be resolved by cladistic analysis of the genomes of additional taxa and an increased understanding of character identity genetic networks.
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