Abstract：
:A new apparatus has been developed that integrates an animal restrainer arrangement for small animals with an actively tunable/detunable dual radio-frequency (RF) coil system for in vivo anatomical and functional magnetic resonance imaging of small animals at 4.7 T. The radio-frequency coil features an eight-element microstrip line configuration that, in conjunction with a segmented outer copper shield, forms a transversal electromagnetic (TEM) resonator structure. Matching and active tuning/detuning is achieved through fixed/variable capacitors and a PIN diode for each resonator element. These components along with radio-frequency chokes (RFCs) and blocking capacitors are placed on two printed circuit boards (PCBs) whose copper coated ground planes form the front and back of the volume coil and are therefore an integral part of the resonator structure. The magnetic resonance signal response is received with a dome-shaped single-loop surface coil that can be height-adjustable with respect to the animal's head. The conscious animal is immobilized through a mechanical arrangement that consists of a Plexiglas body tube and a head restrainer. This restrainer has a cylindrical holder with a mouthpiece and position screws to receive and restrain the head of the animal. The apparatus is intended to perform anatomical and functional magnetic resonance imaging in conscious animals such as mice, rats, hamsters, and marmosets. Cranial images acquired from fully conscious rats in a 4.7 T Bruker 40 cm bore animal scanner underscore the feasibility of this approach and bode well to extend this system to the imaging of other animals.
journal_name
J Neurosci Methodsjournal_title
Journal of neuroscience methodsauthors
Ludwig R,Bodgdanov G,King J,Allard A,Ferris CFdoi
10.1016/j.jneumeth.2003.08.017subject
Has Abstractpub_date
2004-01-30 00:00:00pages
125-35issue
2eissn
0165-0270issn
1872-678Xpii
S0165027003002929journal_volume
132pub_type
杂志文章abstract：:1321N1 astrocytoma cells are frequently used to analyze stimulus-induced intracellular signaling. These experiments require genetic manipulation of the cells and several chemical and physical methods have been employed in the past. Recently, microporation has been suggested as the best method to transfect 1321N1 astro...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2012.02.016
更新日期：2012-01-01 00:00:00
abstract：:We have characterized a method of labeling of axons in the post-mortem spinal cord using a silastic disc holding pins coated with DiI and DiO at the rostral and caudal ends of the cord. We optimized the DiI and DiO tracing techniques under different conditions of fixative concentration (1% versus 4% paraformaldehyde, ...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2005.12.025
更新日期：2006-06-30 00:00:00
abstract：:The most interesting property of neurons is their long-distance propagation of signals as spiking action potentials. Since 1993, Neurobasal/B27 has been used as a serum-free medium optimized for hippocampal neuron survival. Neurons on microelectrode arrays (MEA) were used as an assay system to increase spontaneous spi...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2008.01.009
更新日期：2008-05-30 00:00:00
abstract：:The amplitude of the maximal direct motor response (Mmax) elicited by supramaximal peripheral nerve stimulation can vary with time and with changes in muscle length. We sought to investigate the variability in the amplitude of Mmax in the human wrist flexors (flexor carpi radialis, FCR) at a constant joint position du...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2005.03.016
更新日期：2005-12-15 00:00:00
abstract：INTRODUCTION:Transcranial magnetic stimulation (TMS) is used for assessing the excitability of cortical neurons and corticospinal pathways by determining the subject-specific motor threshold (MT). However, the MT is dependent on the TMS instrumentation and exhibits large variation. We hypothesized that between-subject ...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2011.10.004
更新日期：2012-01-30 00:00:00
abstract：:Implantable neural micro-electrode arrays have the potential to restore lost sensory or motor function to many different areas of the body. However, the invasiveness of these implants often results in scar tissue formation, which can have detrimental effects on recorded signal quality and longevity. Traditional histol...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2013.06.001
更新日期：2013-08-15 00:00:00
abstract：:Matrix metalloproteinases (MMPs) are implicated in the pathology of CNS tuberculosis. Whilst investigating the secretion of MMP-2 from human U373-MG astrocytoma cells, we observed elevated MMP-2 secretion in response to Middlebrook 7H9 media but not to Mycobacterium tuberculosis itself. Middlebrook 7H9 media did not s...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2008.06.007
更新日期：2008-08-30 00:00:00
abstract：:A new technique is described for accurate, reliable measurement of eyeball retraction in the rabbit. A narrow film strip, on which a linear light intensity grating has been exposed, is attached to a contact lens which is placed on the animal's cornea. The other end of the intensity grating slides between a photodiode ...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/0165-0270(84)90077-3
更新日期：1984-01-01 00:00:00
abstract：BACKGROUND:Current assessment of sport-related concussion involves a multifaceted approach including neurocognitive testing, symptom report, and balance assessment. Lacking from this paradigm is a truly objective measure of the physiological changes associated with concussion. NEW METHOD:A device called the Brain Acou...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2013.09.003
更新日期：2014-01-15 00:00:00
abstract：:The simultaneous localization of several anatomical markers is often required to understand and analyze the organization of complex brain nuclei or identify neuronal networks recruited during a specific biological stimulus. Gathering such information is usually achieved by the combined detection of both mRNA and prote...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2011.01.018
更新日期：2011-03-30 00:00:00
abstract：:The objective of visual systems neuroscience has shifted over the past few years from determining the receptive fields of cells towards the understanding of higher level cognition in awake animals viewing natural stimuli. In experiments with awake animals it is important to control the relevant aspects of behavior. Mo...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/s0165-0270(01)00423-x
更新日期：2001-09-30 00:00:00
abstract：BACKGROUND:Multielectrode arrays (MEAs) have been used to understand electrophysiological network dynamics by recording real-time activity in groups of cells. The extent to which the collection of such data enables hypothesis testing on the level of circuits and networks depends largely on the sophistication of the ana...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2016.02.011
更新日期：2016-05-01 00:00:00
abstract：BACKGROUND:Supervised machine learning has been proposed as a revolutionary approach for identifying sensitive medical image biomarkers (or combination of them) allowing for automatic diagnosis of individual subjects. The aim of this work was to assess the feasibility of a supervised machine learning algorithm for the ...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2013.11.016
更新日期：2014-01-30 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：:A protocol has been established for the staining of myelin in frozen sections. While the new method is relatively fast and simple, it eliminates the problems routinely encountered with myelin stains such as blotchiness and uneven staining. Modifications were introduced into the procedures in order to obtain excellent ...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/0165-0270(83)90012-2
更新日期：1983-03-01 00:00:00
abstract：:Neural spike detection and classification, or spike sorting, is the first and a critical step prior to any single unit based neuroscientific studies and applications. A good spike sorter is usually characterized by high detection and classification accuracy, robust to changes in signal-to-noise ratio, objectivity in d...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2012.07.012
更新日期：2012-09-30 00:00:00
abstract：:The study of dendritic spine shape and number has become a standard in the analysis of synaptic transmission anomalies since a considerable number of neuropsychiatric and neurological diseases have their foundation in alterations in these structures. One of the best ways to study possible alterations of dendritic spin...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2008.08.021
更新日期：2009-01-30 00:00:00
abstract：:Threshold depolarization is defined as the amplitude of the depolarization that will just bring a neurone to its firing threshold. Here, a novel technique is described for the measurement of threshold depolarization in resting human motoneurones. The tibial nerve was stimulated at an intensity that was just sufficient...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/0165-0270(91)90097-j
更新日期：1991-08-01 00:00:00
abstract：:Electrical potentials recorded extracellularly from the sinus gland of the isopod, Oniscus asellus, were stored on video tape with the aid of a digital-audio (DA) processor and a video cassette recorder (VCR). The DA processor transforms the analog signal to digital pulses of equal amplitude and converts these pulses ...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/0165-0270(85)90058-5
更新日期：1985-10-01 00:00:00
abstract：:We describe a novel method for retrogradely labeling specific neuronal populations using voltage-sensitive dyes. Styryl dyes were injected into the ventral roots of the isolated embryonic chick spinal cord. After waiting several hours, the dye labeled motoneurons and autonomic preganglionic neurons. Neuronal cell bodi...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/s0165-0270(96)00108-2
更新日期：1996-12-28 00:00:00
abstract：:We have developed a novel double-labeling method to investigate multiple gene expression in single cells. The method relies on the use of a radioactive probe followed by a colorimetric probe. Unique to this method, the radioactive signal is first captured on an emulsion pre-coated slide, which totally separates it fro...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/0165-0270(95)00163-8
更新日期：1996-06-01 00:00:00
abstract：BACKGROUND:For reasons of cost and ethical concerns, models of neurodegenerative disorders such as Huntington disease (HD) are currently being developed in farm animals, as an alternative to non-human primates. Developing reliable methods of testing cognitive function is essential to determining the usefulness of such ...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2015.08.025
更新日期：2016-05-30 00:00:00
abstract：:Capsule application of Diamidino Yellow (DY) to the cut end of the sciatic nerve immediately followed by capsule application of Fast Blue (FB) resulted in approximately 95% double-labelled dorsal root ganglion neurones (DRGn) and motoneurones (Mn). Nerve injection of DY followed either immediately or 2 months later by...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/s0165-0270(99)00164-8
更新日期：2000-02-15 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：:Knockout mice are widely used in all fields of biomedical research. Determining the genotype of every newborn mouse is a tedious task, usually performed by Southern blot hybridization or Polymerase Chain Reaction (PCR). We describe here a quick and simple genotype identification assay based on real-time PCR and SYBR G...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2004.01.007
更新日期：2004-07-30 00:00:00
abstract：:The rates of deterioration of immunocytochemical staining for 4 peptide and 2 neuronal antigens were studied on human, guinea pig and rat colon and urinary bladder. It was found that if the fixation started within 10 h after surgery or death, little change was seen in the pattern and intensity of the immunostains. Whe...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/0165-0270(85)90014-7
更新日期：1985-02-01 00:00:00
abstract：BACKGROUND:Primary cell culture is a valuable tool to utilize in parallel with in vivo studies in order to maximize our understanding of the mechanisms surrounding neurogenesis and central nervous system (CNS) regeneration and plasticity. The zebrafish is an important model for biomedical research and primary neural ce...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2019.108419
更新日期：2019-12-01 00:00:00
abstract：BACKGROUND:CNS inflammation resulting from infection, injury, or neurodegeneration leads to accumulation of diverse B cell subsets. Although antibody secreting cells (ASC) within the inflamed CNS have been extensively examined, memory B cell (Bmem) characterization has been limited as they do not secrete antibody witho...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2017.05.011
更新日期：2017-06-15 00:00:00
abstract：:Previous research has shown that spatio-temporal waves in the EEG are generally of long spatial wavelength and form smooth patterns of phase gradients at particular time-samples. This paper describes a method to measure smooth phase gradients of long spatial wavelength in the EEG. The method depends on the global patt...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2006.02.016
更新日期：2006-09-30 00:00:00
abstract：:Beamforming offers a way to estimate the solution to the inverse problem in EEG and MEG but is also known to perform poorly in the presence of highly correlated sources, e.g. during binaural auditory stimulation, when both left and right primary auditory cortices are activated simultaneously. Surface Laplacian, or the...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2013.05.001
更新日期：2013-08-15 00:00:00
