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1981 19<20
Similar articles 1987 18<20 Organization of sensory and motor nuclei of the trigeminal nerve in lampreys. 1988 259<349 The dorsal cell, one class of primary sensory neuron in the lamprey spinal cord. I. Touch, pressure but no nociception--a physiological study. 1988 258<349 The dorsal cell, one class of primary sensory neuron in the lamprey spinal cord. II. A light- and electron microscopical study. 1989 17<20 HRP study of the central components of the trigeminal nerve in the larval sea lamprey: organization and homology of the primary medullary and spinal nucleus of the trigeminus. Similar articles 1990 16<20 Oral papillae of adults of the southern hemisphere lamprey Geotria australis. Similar articles 1990 15<20 Organization of the primary projections of the lateral line nerves in the lamprey Lampetra japonica. Similar articles Phasic modulation of transmission from vestibular inputs to reticulospinal neurons during fictive locomotion in lampreys. Similar articles 1993 13<20 Paedomorphosis and simplification in the nervous system of salamanders. Similar articles Abstract Comparative neuroanatomists since Herrick [1914] have been aware of the paradox that the brain of amphibians, especially salamanders, is less complex than one would expect based on their phylogenetic position among the Tetrapoda. Many features of the brain are less differentiated in salamanders than in tetrapod outgroups, including chondrichthyans and bony fishes, and for some brain characters, the salamander brain is even more simple than that of the agnathans. Here, we perform a cladistic analysis on 23 characters of four sensory systems (visual, auditory, lateral line and olfactory) and the brain. Our taxa include myxinoids, lampreys, chondrichthyans, actinopterygians, Latimeria, Neoceratodus and the lepidosirenid lungfishes, amniotes, frogs, caecilians, salamanders and bolitoglossine salamanders. Of the 23 characters we examined, 19 are most parsimoniously interpreted as secondarily simplified in salamanders from a more complex ancestral state, two characters are equally parsimonious under both hypotheses, one character (well developed ipsilateral retinotectal projections) is more complex in bolitoglossine salamanders than in vertebrates generally, and only one character (migration of neurons in the medial pallium) is most parsimoniously interpreted as retention of the plesiomorphically simple condition. Secondary simplification of the salamander brain appears to result from paedomorphosis, or retention of juvenile or embryonic morphology into adulthood. Paedomorphosis is correlated with an increase in genome size, which in turn is positively correlated with cell size, but negatively correlated with cell proliferation and differentiation rates. Available data suggest that, although increasing genome size and paedomorphosis tend to compromise the function of the salamander brain, compensating mechanisms have evolved that may restore or even enhance brain function. 1993 12<20 1996 168<349 Monosynaptic input from cutaneous sensory afferents to fin motoneurons in lamprey. "By using conventional electrophysiological criteria, monosynaptic excitatory connections were found between fin dorsal cells and fin motoneurons." "The amplitude of the monosynaptic excitatory postsynaptic potential (EPSP)s was reduced by administration of the N-methyl-D-aspartate (NMDA) receptor antagonist DL,2 amino-5-phosphovaleric acid (APV)." Receptors: monosynaptic excitatory connections, NMDA receptor antagonist input rather than CPG 1997 10<20 Ontogeny of the solitary chemosensory cells in the zebrafish, Danio rerio. Similar articles
1999 9<20
Similar articles 2002 8<20 Immunocytochemical localization of calretinin in the olfactory system of the adult lamprey, Lampetra fluviatilis. 2005 7<20 Organization of the sensory and motor nuclei of the glossopharyngeal and vagal nerves in lampreys. Similar articles Historical hypotheses regarding segmentation of the vertebrate head. 2010 4<20 A vesicular glutamate transporter in lampreys: cDNA cloning and early expression in the nervous system. Similar articles Occurrence of neuropeptides and tyrosine hydroxylase in the olfactory epithelium of the lesser-spotted catshark (Scyliorhinus canicula Linnaeus, 1758). Similar articles Protein synthetic machinery and mRNA in regenerating tips of spinal cord axons in lamprey. Free PMC Article Similar articles Development and Functional Organization of the Cranial Nerves in Lampreys. Similar articles 181001 - 0737 |
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