Abstract：
BACKGROUND:Local shape complexity can be biologically meaningful as a marker of disease, trauma, or change in brain structure over time. Fractal dimensionality (FD) is currently the dominant measure of local shape complexity used in neuroimaging but its limitations are not well understood. NEW METHOD:Elliptical Fourier harmonic power requirement (HPR) may provide complementary information to FD. We benchmarked the performance of FD and HPR on a series of simulated shapes, systematically manipulating aspects of local shape complexity, and a series of clinical contours (glioma tumour cores and stroke lesions from the BRATS and ATLAS datasets). HPR was calculated as the point of 99.9% harmonic power. FD was calculated at six resolutions (8 × 8, 16 × 16, 32 × 32, 64 × 64, 128 × 128, and 256 × 256), by using an approach which computationally indexes the complexity of the shape boundary (i.e. the number of cells defining the contour) relative to the total grid size. RESULTS AND COMPARISON WITH EXISTING METHODS:PR and FD were moderately positively correlated (r ≈ 0.2 to 0.8 depending on shape properties), and both were sensitive to the frequency and amplitude of local complexity. FD was most biased by rotation, while HPR was more biased by global shape features such as deep invaginations. FD indicated an aggregate measure of complexity across the whole contour, while HPR indicated the point of highest complexity. CONCLUSIONS:The HPR index provides conceptually distinct local complexity information from the current FD standard. Future research will benefit from using these complementary measures.
journal_name
J Neurosci Methodsjournal_title
Journal of neuroscience methodsauthors
Walsh EI,Zhang T,Cherbuin Ndoi
10.1016/j.jneumeth.2019.05.009subject
Has Abstractpub_date
2019-07-15 00:00:00pages
61-67eissn
0165-0270issn
1872-678Xpii
S0165-0270(19)30149-9journal_volume
323pub_type
杂志文章abstract：:So far, the double-magnetic induction (DMI) method has been successfully applied to record eye movements from head-restrained humans, monkeys and cats. An advantage of the DMI method, compared to the more widely used scleral search coil technique, is the absence of vulnerable lead wires on the eye. A disadvantage, how...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2006.08.012
更新日期：2007-02-15 00:00:00
abstract：:Neurons growing on microelectrode arrays (MEAs) are promising tools to investigate principal neuronal network mechanisms and network responses to pharmaceutical substances. However, broad application of these tools, e.g. in pharmaceutical substance screening, requires neuronal cells that provide stable activity on MEA...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/s0165-0270(03)00186-9
更新日期：2003-09-30 00:00:00
abstract：:The terminal branches of motoneurons can be excited by electrical current pulses delivered via needles inserted intramuscularly. Observations are reported which indicate that tungsten semi-microelectrodes suitably positioned in a muscle belly can excite antidromically a large proportion of the alpha-motoneurons of tha...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/0165-0270(83)90053-5
更新日期：1983-05-01 00:00:00
abstract：:By extending established technology, we have developed a relatively simple in situ preparation from juvenile rat that overcomes some technical restrictions present in vivo (e.g. need for anaesthesia, mechanical instability for intracellular recording and control over the extracellular milieu). The in situ preparation ...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2006.01.011
更新日期：2006-09-15 00:00:00
abstract：BACKGROUND:Supra-threshold galvanic vestibular stimulation (GVS) can be used to challenge the balance control system by disrupting vestibular inputs. The goal of this study was to propose an objective method to assess variability across subjects in the minimum safe GVS level that causes maximum balance degradation. New...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2018.10.012
更新日期：2019-01-01 00:00:00
abstract：BACKGROUND:Anatomically and physiologically, there is strong relationship between the brain and body. A new MRI platform covering both the brain and the limb would be beneficial for a more thorough understanding of the brain-body interactions. NEW METHOD:A new arm-over-head (AOH) position was developed to collect MRI ...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2020.108829
更新日期：2020-10-01 00:00:00
abstract：BACKGROUND:Mixed frequency and phase coding (FPC) can achieve the significant increase of the number of commands in steady-state visual evoked potential-based brain-computer interface (SSVEP-BCI). However, the inconsistent phases of the SSVEP over channels in a trial and the existence of non-contributing channels due t...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2018.04.001
更新日期：2018-07-01 00:00:00
abstract：:A liquid chromatography/tandem mass spectrometry (LC-MS/MS) method has been established for the rapid and reliable determination of gamma-aminobutyric acid (GABA) and glutamate in brain microdialysates. The microdialysis samples were analysed using a HILIC (hydrophilic interaction liquid chromatography) column, which ...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2009.05.018
更新日期：2009-08-30 00:00:00
abstract：:We investigated the usefulness of the Overall Rotarod Performance (ORP) test for evaluating overall locomotory ability in the 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP)-injected-mouse model of Parkinson's disease (PD). For this procedure, the mice are pretrained on the rotarod and then tested at a series of i...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/s0165-0270(98)00078-8
更新日期：1998-09-01 00:00:00
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：BACKGROUND:Manual annotation of seizures and interictal-ictal-injury continuum (IIIC) patterns in continuous EEG (cEEG) recorded from critically ill patients is a time-intensive process for clinicians and researchers. In this study, we evaluated the accuracy and efficiency of an automated clustering method to accelerat...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2020.108966
更新日期：2020-10-22 00:00:00
abstract：:The reproducibility of motor unit twitches obtained using spike-triggered averaging (STA) was examined in the human first dorsal interosseus. For each motor unit (30 total) a series of STA twitches was derived using a 30 s averaging window. Within each averaging window, eight independent measures characterizing motor ...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/s0165-0270(03)00077-3
更新日期：2003-06-30 00:00:00
abstract：:The technique that we describe aims at evaluating the numerical density of cells in highly heterogeneous regions, e.g., nuclei, layers or columns of neurones. Rather than counting the number of neuronal sections ('profiles') in a reference frame, we evaluated the 'free area' which lies around each profile. The X and Y...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/0165-0270(94)90025-6
更新日期：1994-01-01 00:00:00
abstract：:Mutant protein aggregates are an important biomarker in Huntington's and other neurodegenerative diseases however their quantification has typically relied on manual imaging and counting, or cell-free assays, which do not allow for concurrent analysis of cell viability. Here we describe four automated high throughput ...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2008.02.007
更新日期：2008-06-15 00:00:00
abstract：:The brain is a complex neural network with interleaving functional connectivity among anatomical regions. However, current functional parcellation algorithms usually emphasize independence or orthogonality between the spatial components, with the interleaving nature underrepresented. This study investigates a method, ...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2011.05.001
更新日期：2011-07-15 00:00:00
abstract：:Bone marrow stroma cells-derived neural stem cells (BMSCs-D-NSCs) transplantation is a promising strategy for the treatment of nervous system disorders. The development of a non-invasive method to follow the fate of BMSCs-D-NSCs in vivo is very important for the future application of this treatment. In this paper, we ...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2009.01.007
更新日期：2009-04-30 00:00:00
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 ...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2020.108652
更新日期：2020-05-15 00:00:00
abstract：:An interactive microcomputer system has been developed for the quantitative analysis of Golgi-impregnated neuronal morphology (GINM). The system uses commercially available hardware: a 48K RAM microcomputer (Apple II), a TV monitor (NEC), an optical microscope (Reichert Biovar) with a camera lucida and a specially dev...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/0165-0270(86)90043-9
更新日期：1986-04-01 00:00:00
abstract：BACKGROUND:The widespread use of data-driven methods, such as independent component analysis (ICA), for the analysis of functional magnetic resonance imaging data (fMRI) has enabled deeper understanding of neural function. However, most popular ICA algorithms for fMRI analysis make several simplifying assumptions, thus...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2016.03.012
更新日期：2016-05-01 00:00:00
abstract：:The adult mammalian central nervous system develops from the pseudostratified neuroepithelium of the neural tube. In order to study, in vitro, the differentiation of the neuroepithelial cells in detail and to identify factors that may influence this process, an uncontaminated, viable population of neuroepithelial cell...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/0165-0270(91)90031-t
更新日期：1991-05-01 00:00:00
abstract：:The Utah Intracortical Electrode Array (UIEA) is an array of 100 penetrating silicon microelectrodes designed to focally electrically stimulate or record neurons residing in a single layer up to 1.5 mm beneath the surface of the cerebral cortex. Apart from its use as a unique tool to study parallel processing in the c...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/s0165-0270(98)00031-4
更新日期：1998-07-01 00:00:00
abstract：:A method is described for the isolation of neurons from defined regions of the mammalian central nervous system, by a combination of mechanical and enzymatic means. The procedure liberates neurons free of cellular debris and glial investments, allowing the formation of giga-ohm seals with patch clamp electrodes. The c...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/0165-0270(86)90040-3
更新日期：1986-05-01 00:00:00
abstract：:Although a considerable amount of knowledge has been accumulated about the activity of individual nerve cells in the brain, little is known about their mutual interactions at the local level. The method presented in this paper allows the reconstruction of functional relations within a group of neurons as recorded by a...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章,评审
doi：10.1016/0165-0270(92)90061-h
更新日期：1992-06-01 00:00:00
abstract：:Knowledge of the precise position of recording microelectrodes within the brain of a non-human primate is essential for a reliable exploration of very small anatomic structures. This work demonstrates the compatibility of a newly developed glass-guided microelectrode design and microfeed equipment with high-resolution...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2005.10.018
更新日期：2006-06-15 00:00:00
abstract：:The permanence of retrograde neuronal labeling by the fluorescent tracers Fast Blue, Fluoro-Gold, Mini-Ruby, Fluoro-Ruby and Fluoro-Emerald was investigated in adult rat spinal motorneurons at 1, 4, 12 and 24 weeks after tracer application to a transected muscle nerve. After 1 week, the largest number of retrogradely ...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/s0165-0270(97)02227-9
更新日期：1997-06-06 00:00:00
abstract：:Biocytin is a biotin-lysine complex of low molecular weight containing about 65% biotin, which retains a high affinity for avidin. Since the latter molecule has been conjugated to several histochemical markers, the use of biocytin as an intracellular marker was investigated. Electrodes were filled with a solution of 4...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/0165-0270(88)90114-8
更新日期：1988-08-01 00:00:00
abstract：:A new technique, "serial block face scanning electron microscopy" (SBFSEM), allows for automatic sectioning and imaging of biological tissue with a scanning electron microscope. Image stacks generated with this technology have a resolution sufficient to distinguish different cellular compartments, including synaptic s...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2007.07.021
更新日期：2008-01-30 00:00:00
abstract：:Analysis of cortical patterns requires accurate cortical surface registration. Many researchers map the cortical surface onto a unit sphere and perform registration of two images defined on the unit sphere. Here we have developed a novel registration framework for the cortical surface based on spherical thin-plate spl...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2012.02.010
更新日期：2012-04-30 00:00:00
abstract：:Features extracted with optimized wavelets were compared with standard methods for a Brain-Computer Interface driven by non-motor imagery tasks. Two non-motor imagery tasks were used, Auditory Imagery of a familiar tune and Spatial Navigation Imagery through a familiar environment. The aims of this study were to evalu...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/j.jneumeth.2008.06.026
更新日期：2008-09-15 00:00:00
abstract：:We have developed and characterized a method for the rapid autoradiographic determination of receptor sites for the non-competitive NMDA receptor antagonist, MK-801, using an iodinated form of the compound, (+)-3-[125I]-iodo-MK-801. The binding site was shown to exhibit those criteria necessary for its definition as a...
journal_title：Journal of neuroscience methods
pub_type： 杂志文章
doi：10.1016/0165-0270(93)90137-g
更新日期：1993-01-01 00:00:00
