Abstract：
BACKGROUND:Due to the lack of understanding of the fascicular organisation, vagus nerve stimulation (VNS) leads to unwanted off-target effects. Micro-computed tomography (microCT) can be used to trace fascicles from periphery and image fascicular anatomy. NEW METHOD:In this study, we present a simple and reproducible method for imaging fascicles in peripheral nerves with iodine staining and microCT for the determination of fascicular anatomy and organisation. RESULTS:At the determined optimal pre-processing steps and scanning parameters, the microCT protocol allowed for segmentation and tracking of fascicles within the nerves. This was achieved after 24 hours and 120 hours of staining with Lugol's solution (1% total iodine) for rat sciatic and pig vagus nerves, respectively, and the following scanning parameters: 4 μm voxel size, 35 kVp energy, 114 μA current, 4 W power, 0.25 fps in 4 s exposure time, 3176 projections and a molybdenum target. COMPARISON WITH EXISTING METHOD(S):This optimised method for imaging fascicles provides high-resolution, three-dimensional images and full imaging penetration depth not obtainable with methods typically used such as histology, magnetic resonance imaging and optical coherence tomography whilst obviating time-consuming pre-processing methods, the amount of memory required, destruction of the samples and the cost associated with current microCT methods. CONCLUSION:The optimised microCT protocol facilitates segmentation and tracking of the fascicles within the nerve. The resulting segmentation map of the functional anatomical organisation of the vagus nerve will enable selective VNS ultimately allowing for the avoidance of the off-target effects and improving its therapeutic efficacy.
journal_name
J Neurosci Methodsjournal_title
Journal of neuroscience methodsauthors
Thompson N,Ravagli E,Mastitskaya S,Iacoviello F,Aristovich K,Perkins J,Shearing PR,Holder Ddoi
10.1016/j.jneumeth.2020.108652subject
Has Abstractpub_date
2020-05-15 00:00:00pages
108652eissn
0165-0270issn
1872-678Xpii
S0165-0270(20)30074-1journal_volume
338pub_type
杂志文章abstract：BACKGROUND:We analyze the dynamics of rodent EEG amplitude in an experiment accompanied by video recordings. Brain activity of animals is commonly acquired together with a video of behavior, but recordings are rarely combined in analysis. The data acquired is most commonly analyzed separately. To our knowledge, no stud...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2018.01.002
更新日期：2018-03-15 00:00:00
abstract：:Exceptionally clear Golgi-Nissl sections of 300 micron thickness have been morphometrically studied by light microscopy using oil immersion objectives. The clarity results from a new variation of a staining procedure that combines Golgi and Nissl images in one section. A viewing technique has been developed that permi...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/0165-0270(81)90045-5
更新日期：1981-08-01 00:00:00
abstract：:We describe a novel stimulus delivery system designed to present tactile stimuli to a subject in the tunnel of a magnetic resonance imaging (MRI) system. Using energy from an air-driven piston to turn a wheel, the device advances a conveyor belt with a pre-determined sequence of stimuli that differ in their spatial fe...
journal_title：Journal of neuroscience methods
pub_type： 临床试验,杂志文章
doi：10.1016/j.jneumeth.2006.07.020
更新日期：2007-01-30 00:00:00
abstract：:The quantification of synapses in neuronal cultures is essential in studies of the molecular mechanisms underlying synaptogenesis and synaptic plasticity. Conventional counting of synapses based on morphological or immunocytochemical criteria is extremely work-intensive. We developed a fully automated method which qua...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2011.11.010
更新日期：2012-02-15 00:00:00
abstract：:Analysis of the antigenic components of synaptic membranes presents several problems caused by detergents required to solubilize the proteins. These problems involve detection of the reaction between antibodies and proteins in the detergent extract as well as characterization of the individual antigens after further p...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/0165-0270(80)90058-8
更新日期：1980-04-01 00:00:00
abstract：:A discontinuous gradient of Percoll has been used to prepare a subcellular fraction (fraction III) from fish brain which is greatly enriched in synaptic nerve endings (synaptosomes). Synaptosomes display well-preserved morphology, good functional performance as assessed by ability to release preloaded neurotransmitter...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/s0165-0270(96)00137-9
更新日期：1997-02-01 00:00:00
abstract：:We report on the modulation of respiratory sinus arrhythmia in rats with central pattern generator (CPG) hardware made of silicon neurons. The neurons are made to compete through mutually inhibitory synapses to provide timed electrical oscillations that stimulate the peripheral end of vagus nerve at specific points of...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2012.09.024
更新日期：2013-01-15 00:00:00
abstract：:The detection and characterization of bursting activity remains a topic where no consensual definition has been reached so far. We compare here three different approaches of spike trains variability: statistical characterization (average frequency, coefficient of variation), burst detection (Poisson and rank surprise)...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2009.01.020
更新日期：2009-04-30 00:00:00
abstract：:A newly designed combination microelectrode-injection system is described which can be used to record electrophysiological responses of individual neurons in the primate brain to local administration of small quantities of drugs or other compounds. The assembly of the system is simple, and the materials used are inexp...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2004.03.015
更新日期：2004-09-30 00:00:00
abstract：:Characterizing the structure and electrophysiological properties of single neurons is essential for understanding how individual cells contribute to the function of neuronal networks. Following intra-cellular recording from neurons in acute brain slices, the structure of the recorded cell has typically been examined b...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/s0165-0270(02)00341-2
更新日期：2003-02-15 00:00:00
abstract：:Neuromuscular electrical stimulation (NMES) can provide functional movements in people after central nervous system injury. The neuroplastic effects of long-term NMES-induced repetitive limb movement are not well understood. A rodent model of neurotrauma in which NMES can be implemented may be effective for such inves...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2008.09.015
更新日期：2009-01-30 00:00:00
abstract：:After a review of the ocular artifact reduction literature, a high-throughput method designed to reduce the ocular artifacts in multichannel continuous EEG recordings acquired at clinical EEG laboratories worldwide is proposed. The proposed method belongs to the category of component-based methods, and does not rely o...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2011.01.007
更新日期：2011-03-15 00:00:00
abstract：BACKGROUND:Sholl analysis has been used to analyze neuronal morphometry and dendritic branching and complexity for many years. While the process has become semi-automated in recent years, existing software packages are still dependent on user tracing and hence are subject to observer bias, variability, and increased us...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2019.108529
更新日期：2020-02-01 00:00:00
abstract：:Most techniques used for the study of the fiber connectivity in the central nervous system produce results which are visualized in the conventional light microscope or fluorescence microscope. Although in some cases this may be sufficient, often proof is necessary that fibers which enter a particular brain area indeed...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/s0165-0270(00)00300-9
更新日期：2000-11-15 00:00:00
abstract：BACKGROUND:Neuronal cell cultures are widely used in the field of neuroscience. Cell dissociation allows for the isolation of a desired cell type, yet the neuronal complexity that distinguishes the nervous system is often lost as a result. Thus, culturing neural tissues in ex vivo format provides a physiological contex...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2019.108546
更新日期：2020-02-15 00:00:00
abstract：:One of the challenges in neuroscience is the detection of directionality between signals reflecting neural activity. To reveal the directionality of coupling and time delays between interacting multi-scale signals, we use a combination of a data-driven technique called empirical mode decomposition (EMD) and partial di...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2010.06.004
更新日期：2010-08-15 00:00:00
abstract：:A simple method of generating precisely defined pulsed linear acceleration stimuli was developed and used to study vestibular responses to cranial acceleration. Electromechanical shakers were coupled to a stimulus platform. The platform, in turn, was used to couple stimuli to the skull. Movements were controlled by a ...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/0165-0270(89)90094-0
更新日期：1989-03-01 00:00:00
abstract：:A method is described for the production of an electrode capable of monitoring and modulating the input-output relationship of thalamic neurons. Tungsten-in-glass electrodes were manufactured with the ability to simultaneously record lateral geniculate nucleus action potentials and associated, retinally evoked S-poten...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/0165-0270(93)90126-c
更新日期：1993-09-01 00:00:00
abstract：:NREM phases of sleep in vertebrates are characterized by slow waves. Crayfish also sleeps while lying on one side on the surface of the water. At this time the numerous spikes on an almost flat base line generated by the brain when alert are replaced by slow waves of 15-20 Hz. In this work, we conducted experiments to...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2007.01.025
更新日期：2007-05-15 00:00:00
abstract：:A novel, inexpensive apparatus (locometer) was designed to measure behavioral activity of rats including gross locomotor activity, rearing, and structural characteristics of movement patterns (i.e. fractal dimension). Measurements were done in 3 dimensions at a resolution of approximately 1 cm. To test the sensitivity...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/0165-0270(94)00145-7
更新日期：1995-04-01 00:00:00
abstract：:A video-based 2D eye-tracking system (EyeLink version 2.04, SR Research Ltd/SMI) was compared with the scleral search coil technique for its performance on recording the properties of fixations and saccadic eye movements. Fixation positions and saccadic properties (amplitude, duration, and peak velocity) were calculat...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/s0165-0270(01)00527-1
更新日期：2002-03-15 00:00:00
abstract：BACKGROUND:Within a circuit, specific neurons and synapses are hypothesized to have essential roles in circuit physiology and learning, and dysfunction in these neurons and synapses causes specific disorders. These critical neurons and synapses are embedded in complex circuits containing many neuron and synapse types. ...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2019.108390
更新日期：2019-11-01 00:00:00
abstract：:To facilitate the combination of optical imaging with various electrode-based techniques, we have designed and produced a skull-mounting "sliding-top cranial window" and a removable "electrode positioner microdrive". These new devices were used to study sensory processing in chronic and acute experiments in the cerebr...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/s0165-0270(02)00022-5
更新日期：2002-04-30 00:00:00
abstract：:Synthesis of melatonin in the mammalian pineal gland is regulated by the rhythmic expression of acetyl-CoA: serotonin N-acetyltransferase (SNAT) and other unknown factors. To screen for pineal-specific mRNAs potentially involved in melatonin synthesis and/or regulation, differential display PCR (DDPCR) was employed. W...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/s0165-0270(97)02237-1
更新日期：1997-05-16 00:00:00
abstract：:This paper describes a simple multichannel hook electrode specially adapted for simultaneous recording from several dorsal root filaments in the cat. The electrode consists of a 3-mm-thick PVC plate and accommodates 12 silver wire hooks placed in notches in the plate. It has a semicircular shape, and the notches are m...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/0165-0270(94)90058-2
更新日期：1994-04-01 00:00:00
abstract：:We have designed a microdialysis technique to measure acetylcholinesterase (AChE) activity in the cortex of freely moving rats while simultaneously measuring the release of acetylcholine (ACh). Our approach was validated using ethyl S-2-di-isopropylaminoethyl-phosphonothiolate (VX), an irreversible inhibitor of AChE a...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/s0165-0270(98)00014-4
更新日期：1998-06-01 00:00:00
abstract：:We have designed a new device for head fixation of behaving monkeys. The fixation device consists of a duralumin head ring mounted with four screw holders. It is firmly fixed to the animal's skull with four stainless steel screw pins. The head ring is then attached to a primate chair in any desirable position and angl...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2004.07.003
更新日期：2005-02-15 00:00:00
abstract：BACKGROUND:Recent research has shown that there is a strong correlation between the functional properties of a neuron and its morphologic structure. Current morphologic analyses typically involve a significant component of computer-assisted manual labor, which is very time-consuming and is susceptible to operator bias....
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2007.05.020
更新日期：2007-09-15 00:00:00
abstract：:Antibody microprobes are devices which have been used to determine the release sites of several neuropeptides. The production of microprobes using the previous methodology is a time-consuming procedure requiring a high level of skill. The aim of the study was to investigate alternative methods for the production of mi...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/0165-0270(94)90038-8
更新日期：1994-11-01 00:00:00
abstract：BACKGROUND:Neurotrauma patients face major neurological sequelae. The failure in the preclinical-to-clinical translation of candidate therapies could be due to poor evaluation of rodent behaviours after neurotrauma. NEW METHOD:A home cage automated system was used to study the long term behaviour of individual rats wi...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2019.04.005
更新日期：2019-06-01 00:00:00
