Evolution of nervous systems
Evolution of basal deuterostome nervous systems
... the evolution of deuterostome nervous systems has been complicated by the ambiguous phylogenetic position of the Xenocoelomorpha (Xenoturbellids, acoel flat worms, nemertodermatids), which has been ...
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Evolution of bilaterian central nervous systems: a single origin?
... Another possibility, proposed by Nomaksteinsky and colleagues [88], is that the ectoderm of developing S. kowalevskii may represent a transient larval nervous sys- tem unrelated to that of the adult. Evidence is ...
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The phylogenetic position of ctenophores and the origin(s) of nervous systems
... metazoan nervous systems in light of conflicting ...stepwise evolution of nervous systems within the Neuralia ...vous systems from a simple precursor ...of nervous ...
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The search for ancestral nervous systems: an integrative and comparative approach
... the evolution of nervous systems in basal organisms and their ancestors that go well beyond the singular diffuse nerve net ...conducting systems in extant basal forms and their larvae, ...
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The evolution of nervous system patterning: insights from sea urchin development
... Classically, the vertebrate egg axis has been referred to as the animal- vegetal (AV) axis; the embryo develops primarily from the animal half, whereas the vegetal half contains most of the yolk. However, the primary ...
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Single cell analyses of nitrergic neurons in simple nervous systems
... detection systems have been developed for most types of biologically active molecules and ions (Bryant et ...natural evolution in studies of NO-mediated signaling at the level of the single ...
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The role of G protein coupled receptors in the early evolution of neurotransmission and the nervous system
... and evolution of the nervous system is one of the most intriguing and enigmatic events in ...primitive nervous systems (nerve nets), the demosponge Amphimedon queenslandica and the placozoan ...
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Parasites: evolution’s neurobiologists
... For millions of years, parasites have altered the behaviour of their hosts. Parasites can affect host behaviour by: (1) interfering with the hostʼs normal immune–neural communication, (2) secreting substances that ...
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Convergent evolution of neural systems in ctenophores
... signaling systems from representatives of the basal ...‘true’ nervous systems and mesoderm-derived ...about nervous organization in Ctenophora, and not a single transmitter has been reliably ...
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The origin and evolution of the nervous system
... arthropod nervous systems have long been considered to be extremely different due to their position in the body plan (dorsal in vertebrates and ventral in ...the nervous systems of ...
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Cognitive skills and the evolution of social systems
... That animals can exhibit complex socials skills raises the contentious issue of their intelligence. At one extreme, Descartes considered animals as complex machines like clocks without memories whose behavior is entirely ...
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The Evolution of Senses: My Research Journey into the Nervous System of Cnidaria, Molly Hartley
... hours, if not days, working on a project that never appeared like anything more than a small test tube full of liquid. There was often no way of checking that my experiment was working properly until it was over and ...
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Origin and evolution of the chordate central nervous system: insights from amphioxus genoarchitecture
... ABSTRACT The vertebrate brain is arguably the most complex anatomical and functional structure in nature. During embryonic development, the central nervous system (CNS) undergoes a series of morphogenetic ...
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Organisational fitness searches in the Anthropocene : integrating paradox and corporate sustainability
... a systems perspective to organisational evolution in an effort to advance theories of corporate ...natural systems changes I sought to synthesise our understanding of how and why organisations ...
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CMC ICT3207 Call Flow
... Modulations and signal processing: Analog and digital modulation techniques, Performance of various modulation techniques - Spectral efficiency, Error-rate, Power Amplification, Equalization Rake receiver concepts, ...
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Adaptive factors in the evolution of signalling systems
... Only on e onsideration is given to the balan e between the manner in whi h signal osts vary with quality, and the manner in whi h signaller bene ts also vary with quality, an the distrib[r] ...
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Thermodynamic Formulation of Living Systems and Their Evolution
... biological systems and their evolution, illustrating the agreement that this theory pre- sents with the field of ...Organic systems are described as thermodynamic systems where entropy is ...
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Evolution of control with learning classifier systems
... In this paper we consider control in relation to both network structure and dynamics. We are concerned with the application of Learning Classifier Systems (LCSs) (Urbanow- icz and Moore 2009) that are able to ...
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Tidal instability in exoplanetary systems evolution
... an evolution of the system involving tidal instability occurring before the stellar ...system’s evolution, but now we can also describe explicitly this process with a physical mechanism, the elliptical ...
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Social Justice, Democracy and Cultural Renewal in Nigeria
... to the fact that political systems are in a continual state of . evolution and ideas regarding what ought to be the scope of [r] ...
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