Journal of Comparative Neurology

Cover image for Vol. 522 Issue 3

15 February 2014

Volume 522, Issue 3

Pages Spc1–Spc1, 499–729

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    3. Research Articles
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  2. Research Articles

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    3. Research Articles
    1. Physical (in)activity-dependent structural plasticity in bulbospinal catecholaminergic neurons of rat rostral ventrolateral medulla (pages 499–513)

      Nicholas A. Mischel, Ida J. Llewellyn-Smith and Patrick J. Mueller

      Version of Record online: 20 DEC 2013 | DOI: 10.1002/cne.23464

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      Physical inactivity versus activity is associated with functional changes in control of blood pressure by neurons in the rostral ventrolateral medulla (RVLM). The present study shows that putative cardiovascular RVLM neurons have more complex dendrites in inactive versus active rats. This anatomical difference may underpin the functional differences previously reported.

    2. Birthdating of myenteric neuron subtypes in the small intestine of the mouse (pages 514–527)

      Annette J. Bergner, Lincon A. Stamp, David G. Gonsalvez, Margaret B. Allison, David P. Olson, Martin G. Myers Jr, Colin R. Anderson and Heather M. Young

      Version of Record online: 20 DEC 2013 | DOI: 10.1002/cne.23423

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      To examine when different myenteric neuron subtypes in the mouse intestine are born, EDU labeling was combined with immunohistochemistry. Neuron subtypes were born at different, but overlapping times with serotonin interneurons first, then intrinsic sensory neurons, inhibitory motor neurons and excitatory motor neurons last, with peak birthdate around birth.

    3. Two whisker motor areas in the rat cortex: Evidence from thalamocortical connections (pages 528–545)

      Hisham Mohammed and Neeraj Jain

      Version of Record online: 20 DEC 2013 | DOI: 10.1002/cne.23424

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      Differences in the inputs from the motor and other thalamic nuclei reveal two subdivisions within the rat whisker motor area - a caudal whisker area (CWA) and a rostral whisker area (RWA). Similar differences in the thalamic inputs are also seen for the caudal forelimb area (CFA) and the rostral forelimb area (RFA). Together with the previous physiological evidence, the results suggest presence of a second rostrally located motor area in the rat cortex.

    4. Corticocortical projections to representations of the teeth, tongue, and face in somatosensory area 3b of macaques (pages 546–572)

      Christina M. Cerkevich, Hui-Xin Qi and Jon H. Kaas

      Version of Record online: 20 DEC 2013 | DOI: 10.1002/cne.23426

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      Injections of anatomical tracers into representations of the tongue, teeth, and face in primary somatosensory cortex of macaque monkeys revealed that these representations receive inputs from many somatosensory and motor areas. The representation of the tongue in area 3b receives a unique set of inputs from cortical taste areas.

    5. Age-related neurochemical changes in the rhesus macaque superior olivary complex (pages 573–591)

      Daniel T. Gray, James R. Engle and Gregg H. Recanzone

      Version of Record online: 20 DEC 2013 | DOI: 10.1002/cne.23427

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      The rodent ascending auditory pathway changes its expression of calcium binding proteins, and calcium dependent molecules with age. The purpose of this study was to quantify the age-related changes in parvalbumin and the nitric oxide synthase NADPH-diaphorase in thesuperior olivary complex of macaque monkeys.

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      Neuropeptides in the antennal lobe of the yellow fever mosquito, Aedes aegypti (pages 592–608)

      K.P. Siju, Anna Reifenrath, Hannah Scheiblich, Susanne Neupert, Reinhard Predel, Bill S. Hansson, Joachim Schachtner and Rickard Ignell

      Version of Record online: 20 DEC 2013 | DOI: 10.1002/cne.23434

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      Direct tissue profiling of the primary olfactory center, the antennal lobe (AL), of the yellow fever mosquito Aedes aegypti, by matrix-assisted laser desorption ionization time-of-flight (MALDI-TOF) mass spectrometry reveals 28 mature products from 10 different neuropeptide genes. Subsequent immunocytochemical analysis shows cellular identity of the products of up to 7 of these genes in the AL. The rich array of neuropeptides found in the AL emphasizes the role of these neuromodulators in olfactory processing in mosquitoes.

    7. Distribution and functional expression of Kv4 family α subunits and associated KChIP β subunits in the bed nucleus of the stria terminalis (pages 609–625)

      Donald G. Rainnie, Rimi Hazra, Joanna Dabrowska, Ji-Dong Guo, Chen Chen Li, Sarah Dewitt and E. Chris Muly

      Version of Record online: 20 DEC 2013 | DOI: 10.1002/cne.23435

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      Using a multidisciplinary approach the authors show that specific subunits of Kv4 channels and KChIPs are differentially distributed in specific cell types in the bed nucleus of the stria terminalis. Inhibition of their function in this region facilitates synaptic plasticity and, hence, these channels may influence anxiety-like behavior

    8. Morphology and ultrastructure of medial rectus subgroup motoneurons in the macaque monkey (pages 626–641)

      Jonathan T. Erichsen, Nicholas F. Wright and Paul J. May

      Version of Record online: 20 DEC 2013 | DOI: 10.1002/cne.23437

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      Dendrites of motoneurons supplying multiply innervated fibers in monkey medial rectus muscle (C-group) enter the Edinger-Westphal preganglionic nucleus (EWpg) and receive synaptic input there. This suggests they have evolved to play a role in the near triad allowing primates to exert fine visuomotor control while working in near space.

    9. Differential content of vesicular glutamate transporters in subsets of vagal afferents projecting to the nucleus tractus solitarii in the rat (pages 642–653)

      Sam M. Hermes, James F. Colbert and Sue A. Aicher

      Version of Record online: 20 DEC 2013 | DOI: 10.1002/cne.23438

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      By using distinct tract tracers to label vagal afferents to NTS, this study shows that VGLUT2 is found in vagal afferents of both types. VGLUT1 is less prevalent. Many IB4 afferents did not contain either VGLUT.

    10. Cross-modal reorganization of cortical afferents to dorsal auditory cortex following early- and late-onset deafness (pages 654–675)

      Melanie A. Kok, Nicole Chabot and Stephen G. Lomber

      Version of Record online: 20 DEC 2013 | DOI: 10.1002/cne.23439

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      Injections of retrograde tracer were made into the dorsal zone of auditory cortex in hearing, late-deafened, and early-deafened animals. Overall, in the deaf animals, an increased projection was identified from a visual area involved in the perception of visual motion, the posterolateral lateral suprasylvian area (PLLS).

    11. Subcellular localization of intercellular adhesion molecule-5 (telencephalin) in the visual cortex is not developmentally regulated in the absence of matrix metalloproteinase-9 (pages 676–688)

      Emily A. Kelly, Marie-Eve Tremblay, Carl G. Gahmberg, Li Tian and Ania K. Majewska

      Version of Record online: 20 DEC 2013 | DOI: 10.1002/cne.23440

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      The telencephalon-associated intercellular adhesion molecule 5 (ICAM-5) regulates dendrite morphology in the developing brain. During early development, ICAM-5 is found preferentially within dendrites and immature dendritic protrusions. Cleavage of ICAM-5 by matrix metalloproteinases (MMPs) triggers dendritic maturation. We investigated the ultrastructural localization of ICAM-5 during developmental maturation of synapses in mice with and without MMP9 signaling. We found that, in the absence of MMP-9, the developmental regulation of the subcellular distribution of ICAM-5 is altered.

    12. Comparative analysis of the dendritic organization of principal neurons in the lateral and central nuclei of the rhesus macaque and rat amygdala (pages 689–716)

      John T. Morgan and David G. Amaral

      Version of Record online: 20 DEC 2013 | DOI: 10.1002/cne.23467

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      Are there differences between mammalian species in dendritic arbor size and structure? If so, are those differences consistent across brain regions? We examined dendritic arbor features in the lateral nucleus and medial division of the central nucleus of the amygdala in rhesus macaque and rat. Dendritic arbors were enlarged in the macaque, with greater expansion in the lateral nucleus, which receives inputs primarily from many neocortical regions that have expanded greatly in the primate brain relative to the rodent brain.

    13. Ultrastructure of cisternal synapses on outer hair cells of the mouse cochlea (pages 717–729)

      Paul Albert Fuchs, Mohamed Lehar and Hakim Hiel

      Version of Record online: 20 DEC 2013 | DOI: 10.1002/cne.23478

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      A near-membrane (14-nm) postsynaptic cistern is coextensive with cholinergic efferent synapses on cochlear hair cells. Serial section electron microscopy of synapses on hair cells of genetically altered mice suggests that the cistern may serve to segregate efferent and afferent synaptic calcium signals. Scale bar = 1 μm.

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