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Frontiers in Neuroanatomy

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https://www.readbyqxmd.com/read/27895556/neurosensory-differentiation-and-innervation-patterning-in-the-human-fetal-vestibular-end-organs-between-the-gestational-weeks-8-12
#1
Lejo Johnson Chacko, Elisabeth J Pechriggl, Helga Fritsch, Helge Rask-Andersen, Michael J F Blumer, Anneliese Schrott-Fischer, Rudolf Glueckert
Balance orientation depends on the precise operation of the vestibular end organs and the vestibular ganglion neurons. Previous research on the assemblage of the neuronal network in the developing fetal vestibular organ has been limited to data from animal models. Insights into the molecular expression profiles and signaling moieties involved in embryological development of the human fetal inner ear have been limited. We present an investigation of the cells of the vestibular end organs with specific focus on the hair cell differentiation and innervation pattern using an uninterrupted series of unique specimens from gestational weeks 8-12...
2016: Frontiers in Neuroanatomy
https://www.readbyqxmd.com/read/27891081/the-brain-of-the-archerfish-toxotes-chatareus-a-nissl-based-neuroanatomical-atlas-and-catecholaminergic-cholinergic-systems
#2
Naomi Karoubi, Ronen Segev, Mario F Wullimann
Over recent years, the seven-spot archerfish (Toxotes chatareus) has emerged as a new model for studies in visual and behavioral neuroscience thanks to its unique hunting strategy. Its natural ability to spit at insects outside of water can be used in the laboratory for well controlled behavioral experiments where the fish is trained to aim at targets on a screen. The need for a documentation of the neuroanatomy of this animal became critical as more research groups use it as a model. Here we present an atlas of adult T...
2016: Frontiers in Neuroanatomy
https://www.readbyqxmd.com/read/27881953/connectomic-analysis-of-brain-networks-novel-techniques-and-future-directions
#3
REVIEW
J Leonie Cazemier, Francisco Clascá, Paul H E Tiesinga
Brain networks, localized or brain-wide, exist only at the cellular level, i.e., between specific pre- and post-synaptic neurons, which are connected through functionally diverse synapses located at specific points of their cell membranes. "Connectomics" is the emerging subfield of neuroanatomy explicitly aimed at elucidating the wiring of brain networks with cellular resolution and a quantified accuracy. Such data are indispensable for realistic modeling of brain circuitry and function. A connectomic analysis, therefore, needs to identify and measure the soma, dendrites, axonal path, and branching patterns together with the synapses and gap junctions of the neurons involved in any given brain circuit or network...
2016: Frontiers in Neuroanatomy
https://www.readbyqxmd.com/read/27872585/the-pedunculopontine-tegmental-nucleus-as-a-motor-and-cognitive-interface-between-the-cerebellum-and-basal-ganglia
#4
REVIEW
Fumika Mori, Ken-Ichi Okada, Taishin Nomura, Yasushi Kobayashi
As an important component of ascending activating systems, brainstem cholinergic neurons in the pedunculopontine tegmental nucleus (PPTg) are involved in the regulation of motor control (locomotion, posture and gaze) and cognitive processes (attention, learning and memory). The PPTg is highly interconnected with several regions of the basal ganglia, and one of its key functions is to regulate and relay activity from the basal ganglia. Together, they have been implicated in the motor control system (such as voluntary movement initiation or inhibition), and modulate aspects of executive function (such as motivation)...
2016: Frontiers in Neuroanatomy
https://www.readbyqxmd.com/read/27872584/editorial-anatomy-and-plasticity-in-large-scale-brain-models
#5
EDITORIAL
Markus Butz, Wolfram Schenck, Arjen van Ooyen
No abstract text is available yet for this article.
2016: Frontiers in Neuroanatomy
https://www.readbyqxmd.com/read/27847469/distinction-of-neurons-glia-and-endothelial-cells-in-the-cerebral-cortex-an-algorithm-based-on-cytological-features
#6
Miguel Á García-Cabezas, Yohan J John, Helen Barbas, Basilis Zikopoulos
The estimation of the number or density of neurons and types of glial cells and their relative proportions in different brain areas are at the core of rigorous quantitative neuroanatomical studies. Unfortunately, the lack of detailed, updated, systematic and well-illustrated descriptions of the cytology of neurons and glial cell types, especially in the primate brain, makes such studies especially demanding, often limiting their scope and broad use. Here, following an extensive analysis of histological materials and the review of current and classical literature, we compile a list of precise morphological criteria that can facilitate and standardize identification of cells in stained sections examined under the microscope...
2016: Frontiers in Neuroanatomy
https://www.readbyqxmd.com/read/27847468/synaptic-organization-of-microglomerular-clusters-in-the-lateral-and-medial-bulbs-of-the-honeybee-brain
#7
Theo Mota, Sabine Kreissl, Ana Carrasco Durán, Damien Lefer, Giovanni Galizia, Martin Giurfa
The honeybee Apis mellifera is an established model for the study of visual orientation. Yet, research on this topic has focused on behavioral aspects and has neglected the investigation of the underlying neural architectures in the bee brain. In other insects, the anterior optic tubercle (AOTU), the lateral (LX) and the central complex (CX) are important brain regions for visuospatial performances. In the central brain of the honeybee, a prominent group of neurons connecting the AOTU with conspicuous microglomerular synaptic structures in the LX has been recently identified, but their neural organization and ultrastructure have not been investigated...
2016: Frontiers in Neuroanatomy
https://www.readbyqxmd.com/read/27847467/morphological-neuron-classification-using-machine-learning
#8
Xavier Vasques, Laurent Vanel, Guillaume Villette, Laura Cif
Classification and quantitative characterization of neuronal morphologies from histological neuronal reconstruction is challenging since it is still unclear how to delineate a neuronal cell class and which are the best features to define them by. The morphological neuron characterization represents a primary source to address anatomical comparisons, morphometric analysis of cells, or brain modeling. The objectives of this paper are (i) to develop and integrate a pipeline that goes from morphological feature extraction to classification and (ii) to assess and compare the accuracy of machine learning algorithms to classify neuron morphologies...
2016: Frontiers in Neuroanatomy
https://www.readbyqxmd.com/read/27833534/on-bipolar-cells-in-macaque-retina-type-specific-synaptic-connectivity-with-special-reference-to-off-counterparts
#9
Yoshihiko Tsukamoto, Naoko Omi
To date, 12 macaque bipolar cell types have been described. This list includes all morphology types first outlined by Polyak (1941) using the Golgi method in the primate retina and subsequently identified by other researchers using electron microscopy (EM) combined with the Golgi method, serial section transmission EM (SSTEM), and immunohistochemical imaging. We used SSTEM for the rod-dense perifoveal area of macaque retina, reconfirmed ON (cone) bipolar cells to be classified as invaginating midget bipolar (IMB), diffuse bipolar (DB)4, DB5, DB6, giant bipolar (GB), and blue bipolar (BB) types, and clarified their type-specific connectivity...
2016: Frontiers in Neuroanatomy
https://www.readbyqxmd.com/read/27833533/hdbr-expression-a-unique-resource-for-global-and-individual-gene-expression-studies-during-early-human-brain-development
#10
Susan J Lindsay, Yaobo Xu, Steven N Lisgo, Lauren F Harkin, Andrew J Copp, Dianne Gerrelli, Gavin J Clowry, Aysha Talbot, Michael J Keogh, Jonathan Coxhead, Mauro Santibanez-Koref, Patrick F Chinnery
No abstract text is available yet for this article.
2016: Frontiers in Neuroanatomy
https://www.readbyqxmd.com/read/27822181/individual-neurons-confined-to-distinct-antennal-lobe-tracts-in-the-heliothine-moth-morphological-characteristics-and-global-projection-patterns
#11
Elena Ian, Xin C Zhao, Andreas Lande, Bente G Berg
To explore fundamental principles characterizing chemosensory information processing, we have identified antennal-lobe projection neurons in the heliothine moth, including several neuron types not previously described. Generally, odor information is conveyed from the primary olfactory center of the moth brain, the antennal lobe, to higher brain centers via projection neuron axons passing along several parallel pathways, of which the medial, mediolateral, and lateral antennal-lobe tract are considered the classical ones...
2016: Frontiers in Neuroanatomy
https://www.readbyqxmd.com/read/27812324/big-cat-coalitions-a-comparative-analysis-of-regional-brain-volumes-in-felidae
#12
Sharleen T Sakai, Bradley M Arsznov, Ani E Hristova, Elise J Yoon, Barbara L Lundrigan
Broad-based species comparisons across mammalian orders suggest a number of factors that might influence the evolution of large brains. However, the relationship between these factors and total and regional brain size remains unclear. This study investigated the relationship between relative brain size and regional brain volumes and sociality in 13 felid species in hopes of revealing relationships that are not detected in more inclusive comparative studies. In addition, a more detailed analysis was conducted of four focal species: lions (Panthera leo), leopards (Panthera pardus), cougars (Puma concolor), and cheetahs (Acinonyx jubatus)...
2016: Frontiers in Neuroanatomy
https://www.readbyqxmd.com/read/27807409/structural-magnetic-resonance-imaging-can-identify-trigeminal-system-abnormalities-in-classical-trigeminal-neuralgia
#13
REVIEW
Danielle D DeSouza, Mojgan Hodaie, Karen D Davis
Classical trigeminal neuralgia (TN) is a chronic pain disorder that has been described as one of the most severe pains one can suffer. The most prevalent theory of TN etiology is that the trigeminal nerve is compressed at the root entry zone (REZ) by blood vessels. However, there is significant evidence showing a lack of neurovascular compression (NVC) for many cases of classical TN. Furthermore, a considerable number of patients who are asymptomatic have MR evidence of NVC. Since there is no validated animal model that reproduces the clinical features of TN, our understanding of TN pathology mainly comes from biopsy studies that have limitations...
2016: Frontiers in Neuroanatomy
https://www.readbyqxmd.com/read/27799898/globus-pallidus-interna-in-tourette-syndrome-decreased-local-activity-and-disrupted-functional-connectivity
#14
Gong-Jun Ji, Wei Liao, Yang Yu, Huan-Huan Miao, Yi-Xuan Feng, Kai Wang, Jian-Hua Feng, Yu-Feng Zang
Globus pallidus interna (GPi) is an effective deep brain stimulation site for the treatment of Tourette syndrome (TS), and plays a crucial role in the pathophysiology of TS. To investigate the functional network feature of GPi in TS patients, we retrospectively studied 24 boys with 'pure' TS and 32 age-/education-matched healthy boys by resting state functional magnetic resonance images. Amplitude of low-frequency fluctuation (ALFF) and functional connectivity were used to estimate the local activity in GPi and its functional coordinate with the whole brain regions, respectively...
2016: Frontiers in Neuroanatomy
https://www.readbyqxmd.com/read/27790096/intranasal-location-and-immunohistochemical-characterization-of-the-equine-olfactory-epithelium
#15
Alexandra Kupke, Sabine Wenisch, Klaus Failing, Christiane Herden
The olfactory epithelium (OE) is the only body site where neurons contact directly the environment and are therefore exposed to a broad variation of substances and insults. It can serve as portal of entry for neurotropic viruses which spread via the olfactory pathway to the central nervous system. For horses, it has been proposed and concluded mainly from rodent studies that different viruses, e.g., Borna disease virus, equine herpesvirus 1 (EHV-1), hendra virus, influenza virus, rabies virus, vesicular stomatitis virus can use this route...
2016: Frontiers in Neuroanatomy
https://www.readbyqxmd.com/read/27790095/merged-group-tractography-evaluation-with-selective-automated-group-integrated-tractography
#16
David Q Chen, Jidan Zhong, David J Hayes, Brendan Behan, Matthew Walker, Peter S-P Hung, Mojgan Hodaie
Introduction: Tractography analysis in group-based studies across large populations has been difficult to implement. We propose Selective Automated Group Integrated Tractography (SAGIT), an automated group tractography software platform that incorporates multiple diffusion magnetic resonance imaging (dMRI) practices which will allow great accessibility to group-wise dMRI. We use a merged tractography approach that permits evaluation of tractography datasets at the group level. We also introduce an image normalized overlap score (NOS) that measures the quality of the group tractography results...
2016: Frontiers in Neuroanatomy
https://www.readbyqxmd.com/read/27790094/editorial-the-major-discoveries-of-cajal-and-his-disciples-consolidated-milestones-for-the-neuroscience-of-the-xxist-century
#17
EDITORIAL
Fernando de Castro, Miguel A Merchán
No abstract text is available yet for this article.
2016: Frontiers in Neuroanatomy
https://www.readbyqxmd.com/read/27777554/whole-brain-monosynaptic-afferent-inputs-to-basal-forebrain-cholinergic-system
#18
Rongfeng Hu, Sen Jin, Xiaobin He, Fuqiang Xu, Ji Hu
The basal forebrain cholinergic system (BFCS) robustly modulates many important behaviors, such as arousal, attention, learning and memory, through heavy projections to cortex and hippocampus. However, the presynaptic partners governing BFCS activity still remain poorly understood. Here, we utilized a recently developed rabies virus-based cell-type-specific retrograde tracing system to map the whole-brain afferent inputs of the BFCS. We found that the BFCS receives inputs from multiple cortical areas, such as orbital frontal cortex, motor cortex, and insular cortex, and that the BFCS also receives dense inputs from several subcortical nuclei related to motivation and stress, including lateral septum, central amygdala, paraventricular nucleus of hypothalamus, dorsal raphe, and parabrachial nucleus...
2016: Frontiers in Neuroanatomy
https://www.readbyqxmd.com/read/27774055/stimulation-of-baroresponsive-parts-of-the-nucleus-of-the-solitary-tract-produces-nitric-oxide-mediated-choroidal-vasodilation-in-rat-eye
#19
Chunyan Li, Malinda E C Fitzgerald, Nobel Del Mar, Anton Reiner
Preganglionic parasympathetic neurons of the ventromedial part of the superior salivatory nucleus (SSN) mediate vasodilation of orbital and choroidal blood vessels, via their projection to the nitrergic pterygopalatine ganglion (PPG) neurons that innervate these vessels. We recently showed that the baroresponsive part of the nucleus of the solitary tract (NTS) innervates choroidal control parasympathetic preganglionic neurons of SSN in rats. As this projection provides a means by which blood pressure (BP) signals may modulate choroidal blood flow (ChBF), we investigated if activation of baroresponsive NTS evokes ChBF increases in rat eye, using Laser Doppler Flowmetry (LDF) to measure ChBF transclerally...
2016: Frontiers in Neuroanatomy
https://www.readbyqxmd.com/read/27766074/corrigendum-fib-sem-technology-and-high-throughput-3d-reconstruction-of-dendritic-spines-and-synapses-in-gfp-labeled-adult-generated-neurons
#20
Carles Bosch, Albert Martínez, Nuria Masachs, Cátia M Teixeira, Isabel Fernaud, Fausto Ulloa, Esther Pérez-Martínez, Carlos Lois, Joan X Comella, Javier DeFelipe, Angel Merchán-Pérez, Eduardo Soriano
[This corrects the article on p. 60 in vol. 9, PMID: 26052271.].
2016: Frontiers in Neuroanatomy
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