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Flatworm nerve–muscle: structural and functional analysis
- Biology
- 2004
Platyhelminthes occupy a unique position in nerve–muscle evolution, being the most primitive of metazoan phyla. Essentially, their nervous system consists of an archaic brain and associated pairs o...
Functional morphology of the platyhelminth nervous system
- Biology
- 1996
The actions of neuronal substances in flatworms are largely undetermined, but FaRPs and 5-HT are known to be myoactive in all of the major groups, and there is immuno-cytochemical evidence that they have a role in the mechanism of egg assembly.
Is GABA present in the nervous system of acoel plathelminthes? An electron immunocytochemical study
- Biology
- 2001
Abstract Our immunocytochemical investigation positively identified for the first time at the ultrastructural level the presence of GABA‐ir neurones and terminals in the nervous system of a…
Neuroanatomy of the rhabdocoel flatworm Mesostoma ehrenbergii (focke, 1836). I. Neuronal diversity in the brain
- BiologyThe Journal of comparative neurology
- 1994
The neuronal configurations of brain cells in the rhabdocoel flatworm Mesostoma ehrenbergii are investigated and those of the polyclad Notoplan acticolato determine neuronal synapomorphies for these different flatworm clades.
Molecules and cognition: the latterday lessons of levels, language, and lac. Evolutionary overview of brain structure and function in some vertebrates and invertebrates.
- BiologyJournal of neurobiology
- 1993
It is argued that to achieve a significant understanding of the functions of extant nervous systems the authors need to concentrate on fewer organisms in greater depth and manipulate genomes via transgenic technologies to understand the behavioral outputs that are possible from an organism.
On the evolution of central nervous systems: Implications from polyclad turbellarian neurobiology
- BiologyHydrobiologia
- 2004
The nervous system of the polyclad turbellarian Notoplana acticola consists of a series of nerve plexuses and a central ganglion, the brain. The brain contains a variety of cell types including…
Age-dependent changes in fluorescent neurons in the brain of Notoplana acticola, a polyclad flatworm.
- BiologyThe Journal of experimental zoology
- 1987
The presence of a small population of fluorescent cells within the brain of the marine polyclad flatworm Notoplana acticola suggests that the fluorescent substance in the neurons is dopaminergic in nature.
Parvalbumin-immunoreactive proteins in the nervous system of planarians
- BiologyCellular and Molecular Neurobiology
- 2005
Immunocytochemical studies exhibit parvalbumin-immunoreactive material exclusively in neurons supporting the notion of an early evolutionary appearance of these proteins in the nervous system.
The Great Chain of Semiosis. Investigating the Steps in the Evolution of Semiotic Competence
- BiologyBiosemiotics
- 2015
The main purpose of this paper is to suggest a scaling of this progression in semiotic freedom into a series of distinct steps, and discusses the conceptual framework for biosemiotic evolution.
Drosophila as a tool for studying the conserved genetics of pain
- BiologyClinical genetics
- 2012
The utility of Drosophila melanogaster as an emerging model organism for studying the conserved genetics of nociception is discussed, particularly with respect to recently developed high‐throughput Drosophile ‘pain’ paradigms.
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