• Fast, low-angle shoot functional magnetic resonance imaging (fMRI), based on the blood oxygenation level-dependent (BOLD) effect, was combined with optical recording of intrinsic signals (ORIS) and 2-deoxyglucose labeling in gerbil barrel cortex. (jneurosci.org)
  • We used event-related functional magnetic resonance imaging (fMRI) in an olfactory version of a classical conditioning paradigm, whereby neutral faces were paired with pleasant, neutral, or unpleasant odors, under 50% reinforcement. (jneurosci.org)
  • This discovery formed the basis of a powerful technique used nowadays to study brain activity: blood oxygenation level-dependent (BOLD) functional magnetic resonance imaging (fMRI). (frontiersin.org)
  • namely, resting-state functional magnetic resonance imaging (rs-fMRI). (ispgr.org)
  • The speakers have used a variety of neuroimaging techniques with a focus on conventional functional magnetic resonance imaging (fMRI) approaches, but also including high-resolution fMRI, electroencephalography (EEG), subdural electrocorticography (ECoG), and invasive electrophysiology. (visionsciences.org)
  • We describe a method that reconstructs population receptive field (pRF) properties in human visual cortex using fMRI. (visionsciences.org)
  • The typical approach currently used for brain mapping is functional magnetic resonance imaging, or fMRI," said Zouridakis, associate professor at UH's College of Technology. (dotmed.com)
  • However, an fMRI scanner is expensive, on the order of millions of dollars, and confined in one place, as it requires a shielded room because of the strong magnetic fields. (dotmed.com)
  • Functional MRI (fMRI) is based on the same principles as MRI, but relies on the differing magnetic properties of oxygenated and deoxygenated hemoglobin (in red blood cells). (sfu.ca)
  • Brain imaging data such as EEG signals, function magnetic resonance imaging (FMRI) and di usion tensor imaging (DTI) are typical examples. (uwaterloo.ca)
  • For example, the location of functional activity obtained from positron emission tomography (PET), functional magnetic resonance imaging (fMRI), and other methods can be mapped to the extracted cortical surface, providing a better understanding of brain function and organization. (jhu.edu)
  • These patterns are similar to major functional networks described in humans by resting-state fMRI, such as the lateral task-dependent network putatively anticorrelated with the midline default-mode network. (nature.com)
  • Herein we report on a pilot study involving twelve participants with ALS and nine age-matched healthy controls who underwent high-resolution resting state functional magnetic resonance imaging at an ultra-high field of 7 Tesla. (biorxiv.org)
  • Secondary outcome measures include the Insomnia Severity Index, the National Institutes of Health Stroke Scale, the Hospital Anxiety and Depression Scale, brain magnetic resonance imaging, functional magnetic resonance imaging, and nocturnal melatonin concentrations. (biomedcentral.com)
  • Magnetic resonance imaging (MRI) provides incremental value to clinical findings in staging patients of intermediate risk. (hindawi.com)
  • Diffusion-weighted imaging (DWI) is another MR-based technique that probes functional characteristics of tissues. (hindawi.com)
  • We sought to develop a clinical workflow and uniquely capable custom software tool to integrate advanced 3-tesla 3D proton magnetic resonance spectroscopic imaging ( 1 H-MRSI) into industry standard image-guided neuronavigation systems, especially for use in brain tumor surgery. (karger.com)
  • The foundation of social touch in the nervous system was examine using a functional magnetic resonance imaging study in which 20 individuals participated. (aalto.fi)
  • The paramagnetic gadolinium(III) ion is used as contrast agent in magnetic resonance (MR) imaging to improve the lesion detection and characterization. (preprints.org)
  • 1 has been characterized through vis-IR, SEM-EDAX and single-crystal X-ray diffraction techniques, and its magnetic and relaxometric properties have been investigated by means of SQUID magnetometer and MR imaging phantom studies, respectively. (preprints.org)
  • On the basis of its high relaxivity values, this gadolinium(III) complex can be considered a suitable candidate for contrast enhanced magnetic resonance imaging. (preprints.org)
  • Magnetic resonance imaging (MRI) is a powerful noninvasive imaging modality that produces images with excellent soft tissue signal and tunable contrast. (purdue.edu)
  • Simulating local deformations in the human cortex due to blood flow-induced changes in mechanical tissue properties: Impact on functional magnetic resonance imaging. (mpg.de)
  • Quantitative Magnetic Resonance Imaging (MRI) parameters have the potential in detecting loading-induced changes in biomechanical properties of the IVD. (cdc.gov)
  • Magnetic resonance imaging (MRI) has played a major role in the investigation of brain structure, function development, and pathologies. (sciencewatch.com)
  • Your most-cited papers are on the application of diffusion imaging for structural and functional mapping. (sciencewatch.com)
  • Functional magnetic resonance imaging is used to study brain activity and the relaxation response that is part of some traditional medicine therapies such as meditation and yoga, which are increasingly drawn on for mental health and wellbeing in stressful times. (ekklesia.co.uk)
  • Magnetic Resonance Imaging (MRI) is a non-invasive technique for obtaining images of brain structure. (sfu.ca)
  • I have a keen interest in applying functional data analysis techniques to study functional connectivity between these imaging data collected from different regions of the brain. (uwaterloo.ca)
  • Objective -To prospectively establish risk factors for hamstring muscle strain injury using magnetic resonance imaging (MRI) to define the diagnosis of posterior thigh injury. (bmj.com)
  • In this talk i will review a series of neurophysiological and functional magnetic resonance imaging studies from my laboratory that aim to identify how information in natural images is represented in visual areas across the visual hierarchy. (rutgers.edu)
  • Among the techniques covered will be light microscopy, electron microscopy and fluorescence based imaging, computed tomography, radiography, super resolution microscopy, magnetic resonance imaging. (manchester.ac.uk)
  • After a general introduction of terms and properties important to most imaging modalities, the initial lectures will discuss research at the sub-millimetre scale investigating cells and tissues in health and disease. (manchester.ac.uk)
  • From there, with increasing spatial scale, we will look at imaging of anatomical and functional structures in biomedical research. (manchester.ac.uk)
  • Some of the methods covered are computed tomography, radiography, magnetic resonance imaging. (manchester.ac.uk)
  • Recent advances in medical imaging of the brain allow anatomical information derived from high resolution imaging modalities such as magnetic resonance imaging (MRI) and computed tomography (CT) to be fused with physiological information. (jhu.edu)
  • Here we propose a novel, highly resolved connectivity mapping approach, using ultrafast functional ultrasound (fUS), which enables imaging of cerebral microvascular haemodynamics deep in the anaesthetized rodent brain, through a large thinned-skull cranial window, with pixel dimensions of 100 μm × 100 μm in-plane. (nature.com)
  • These results introduce fUS as a powerful novel neuroimaging method, which could be extended to portable systems for three-dimensional functional connectivity imaging in awake and freely moving rodents. (nature.com)
  • Magnetic resonance imaging (MRI) has additional technical and logistic challenges, such as the necessity for high magnetic fields, problems with motion artefacts, electromagnetic compatibility issues, high costs and lack of portability. (nature.com)
  • 38 dynamic contrast enhanced magnetic resonance imaging (DCE-MRI) data sets of patients with malignant pleural-mesothelioma were acquired and post-processed. (nih.gov)
  • Positron emission tomography (PET) in combination with computed tomography, or with magnetic resonance is an imaging examination method of nuclear medicine. (bvsalud.org)
  • It uses targeted functional imaging of specific cell properties using radiopharmaceuticals. (bvsalud.org)
  • Venous imaging (magnetic resonance venography, or MRV) provides the best images of venous abnormalities, including thrombosis and anomalies. (msdmanuals.com)
  • Magnetic resonance cholangiopancreatography (MRCP) is particularly valuable as a noninvasive, highly accurate method of imaging the biliary and pancreatic duct systems. (msdmanuals.com)
  • Mostajeran M, Wetterling F, Blixt FW, Edvinsson L, Ansar S. Acute mitogen-activated protein kinase 1/2 inhibition improves functional recovery and vascular changes after ischaemic stroke in rat-monitored by 9.4 T magnetic resonance imaging. (lu.se)
  • Then the magnetic resonance imaging (MRI) components and their fields, the consequential MRI-compatibility concept and possible image artifacts are detailed and analyzed. (bvsalud.org)
  • Our goal was to establish the ante mortem diagnosis of sCJD subtype, based on patient-specific estimates of the spatiotemporal cascade of lesions detected by diffusion-weighted magnetic resonance imaging (DWI). (cdc.gov)
  • With the development and optimization of non-invasive techniques, such as nuclear magnetic resonance spectroscopy (MRS), several groups have worked on assessing cerebral metabolism in vivo . (frontiersin.org)
  • Nuclear magnetic resonance (NMR) and isothermal titration calorimetry (ITC) were used to describe the distinct features of this interaction. (phys.org)
  • Although high-resolution structural information can be obtained by X-ray crystallography, cryo-electron microscopy, nuclear magnetic resonance, and structure prediction tools, they are often insufficient for grasping the actual states of proteins in solution. (biophysics.org)
  • While these assumptions lead to relatively crude models, with in particular no consideration of the interconnectivity between pores, recent comparisons of the pore size distributions obtained with such methods to data derived from Small Angle X-ray Scattering [3] and average pore sizes determined by Nuclear Magnetic Resonance (NMR) [4] strengthens the confidence in this type of porosity characterisation. (cecam.org)
  • In particular, they are and nuclear magnetic resonance (NMR) refinement. (lu.se)
  • The formation and development of physical research at the KPhTI were determined by the discovery of the phenomenon of electron paramagnetic resonance (EPR) in Kazan in 1944 by Evgenii Konstantinovich Zavoisky. (knc.ru)
  • The International Zavoisky Award in recognition of truly outstanding applications or development of electron paramagnetic resonance plays an important role in strengthening the international authority of the institute. (knc.ru)
  • In our study, we exploited a paramagnetic lanthanide ion, Gd 3+ , in electron paramagnetic resonance (EPR) experiments and measured the inter-gadolinium distance distribution that reflects the conformational states of the protein. (biophysics.org)
  • This notion relates the visual field maps to the idea of functional specialization, i.e. separate cortical regions are involved in different processes. (visionsciences.org)
  • Next, we extend conventional stimulus-referred notions of the receptive field to neural-referred properties, i.e. cortico-cortical receptive fields that capture the information flow between visual field maps. (visionsciences.org)
  • A method for finding the cortical surface of the brain from magnetic resonance images using a combination of fuzzy segmentation, isosurface extraction, and a deformable surface is presented. (jhu.edu)
  • These advances have placed a priority on obtaining accurate reconstructions of the cortical surface, not only to provide valuable information on the geometric and anatomical properties of the brain but for other purposes as well. (jhu.edu)
  • Furthermore, cortical thickness is reduced in SARS-CoV-2-infected patients, suggesting that SARS-CoV-2 can induce pathologic changes in the brain, which may be linked to the functional deficits noted in those patients. (cdc.gov)
  • Currently, the improvement of detection modalities (i.e., direct detection of 13 C isotopomers), the progress in building adequate mathematical models along with the increase in magnetic field strength now available render possible detailed compartmentalized metabolic flux characterization. (frontiersin.org)
  • McKnight TR, von dem Bussche MH, Vigneron DB, Lu Y, Berger MS, McDermott MW, Dillon WP, Graves EE, Pirzkall A, Nelson SJ: Histopathological validation of a three-dimensional magnetic resonance spectroscopy index as a predictor of tumor presence. (karger.com)
  • In recent years important results were obtained in the field of the development of the methodology and applications of EPR, quantum memory, nanotechnologies, coherent optical solid-state spectroscopy, fast processes and non-trivial properties of new materials. (knc.ru)
  • This functional anatomical shift is proportional to FPl excitability and amygdalofugal projections strength. (nature.com)
  • To fully understand the chemical structure of graphene oxide and the oxidation chemistry of sp2 carbon sites, we conducted a practical experiment and density functional theory combined study on the oxidation process of Graphite. (mis-asia.com)
  • density functional theory and molecular mechanics. (lu.se)
  • Magnetic resonance elastography (MRE) is a form of elastography that specifically leverages MRI to quantify and subsequently map the mechanical properties (elasticity or stiffness) of soft tissue. (wikipedia.org)
  • Beyond simply images of tissue morphology, MRI can therefore be used to probe the mechanical behavior, material properties, and the biochemical content of tissues and other biomaterials. (purdue.edu)
  • MRI experiments on the human brain can be divided into two categories: structural experiments, which rely on the biophysical properties of brain tissue, and functional experiments, which are sensitive to temporarily changing neuron activity. (sciencewatch.com)
  • MR Elastography quantifies the mechanical properties of tissue, such as stiffness or viscosity. (unibas.ch)
  • Raina D.B., Larsson D., Mrkonjic F., Isaksson H., Kumar A., Lidgren L., Tägil L. Gelatin- hydroxyapatite- calcium sulphate based biomaterial for long term sustained delivery of bone morphogenic protein-2 and zoledronic acid for increased bone formation: In-vitro and in-vivo carrier properties. (lu.se)
  • The course also describes magnetic measuring techniques that are based on magnetometry, X-rays, neutrons and scanning probe microscopy. (lu.se)
  • Functional abnormalities are present at an early age, suggesting an aortic wall disease inherent to the TS. (bvsalud.org)
  • To study segmental structural and functional aortic properties in Turner syndrome (TS) patients . (bvsalud.org)
  • The purpose of this study was to evaluate the diagnostic value and tumor-vascular display properties (microcirculation) of two different functional MRI post-processing and display (color and gray-scale display) techniques used in oncology. (nih.gov)
  • This small study demonstrated for the first time that clinically-meaningful gait features are linked to the functional integrity of distinct brain networks. (ispgr.org)
  • Proximal aortic stiffening in Turner patients may be present before dilation can be detected: a segmental functional MRI study. (bvsalud.org)
  • Cardiovascular magnetic resonance (CMR) allows segmental study of aortic elastic properties. (bvsalud.org)
  • We will describe data-analysis techniques to reconstruct receptive field properties of neural populations, and extend them to visual field maps and clusters within human and macaque visual cortex. (visionsciences.org)
  • This type of switching between two functional sites has not been noted for any interaction between proteins previously. (phys.org)
  • Because multi-domain proteins often undergo drastic conformational changes during their functional processes, information about their dynamic properties is essential to understand the mechanisms. (biophysics.org)
  • A general property of disordered proteins is their structural expansion that results in a high macromolecular flexibility. (lu.se)
  • Resonance Group, Chemical of the globular proteins bovine pancreatic trypsin inhibitor (BPTI) and Center, Lund University ubiquitin in aqueous solution. (lu.se)
  • mechanics (QM), in particular the Schr ¨odinger equation, allow us different proteins, e.g. alcohol dehydrogenase, blue copper proteins, to calculate any measurable property of a defined set of atoms. (lu.se)
  • Here, we build on those insights to identify functional-, structural-, and neurochemical properties of FPl that explain variation in the implementation of neural control over emotional behavior between high-anxiety individuals and their non-anxious peers. (nature.com)
  • At the smallest scale, the receptive field is a property of individual neurons and summarizes the region of the visual field where visual stimulation elicits a response. (visionsciences.org)
  • The mesoscale picture provided by pore size distributions remains insufficient to model a number of phenomena as adsorbate-adsorbent interactions at the atomistic scale can affect macroscopic properties significantly. (cecam.org)
  • The brain dynamically integrates and coordinates responses to internal and external stimuli across multiple spatiotemporal scales through large-scale functional networks. (nature.com)
  • The effects of compatibilization on morphological thermal and mechanical properties were investigated. (4spe.org)
  • Functional connectivity within and between seven known functional brain networks was estimated and compared to gait outcomes. (ispgr.org)
  • At low magnetic fields, MRE can become more robust and reliable thanks to the much lower magnetic susceptibility and impact from the presence of iron. (unibas.ch)
  • Thus, despite the abundance of clinical data, a more precise functional organization of human olfaction has not been elucidated. (jneurosci.org)
  • Pini L, Wennberg AM, Salvalaggio A, Vallesi A , Pievani M, Corbetta M . Breakdown of Specific Functional Brain Networks in Clinical Variants of Alzheimer's Disease. (neurotree.org)
  • Task-free brain activity affords unique insight into the functional structure of brain network dynamics and is a strong marker of individual differences, but has proven difficult to model at fast time-scales. (researchgate.net)
  • Explain advantages and disadvantages with different magnetic measurement techniques. (lu.se)
  • Studies of patients with focal brain injury indicate that smell perception involves caudal orbitofrontal and medial temporal cortices, but a more precise functional organization has not been characterized. (jneurosci.org)
  • Insomnia is defined as repeated difficulties in initiating or maintaining sleep or early awakening accompanied by daytime functional impairment [ 4 ]. (biomedcentral.com)
  • By placing an individual in a very strong magnetic field and passing a radio wave through the field, all of the hydrogen atoms in the individual's head can be induced to spin in the same direction. (sfu.ca)
  • When surrounded by the strong magnetic field of an MRI device, the magnetic axes align along that field. (msdmanuals.com)
  • Starting from 1990, KPhTI collaborates with Springer-Verlag on publishing the international journal "Applied Magnetic Resonance" devoted to applications of magnetic resonance in physics, chemistry, biology, medicine, geochemistry, ecology etc. (knc.ru)
  • Normally, protons within tissues spin to produce tiny magnetic fields that are randomly aligned. (msdmanuals.com)
  • Gait speed and gait variability are associated with different functional brain networks. (ispgr.org)
  • MRI techniques manipulate the behaviors of nuclei within a material, usually protons, so that their responses to various magnetic fields convey information about their location, motion, and even chemical environment. (purdue.edu)
  • La parálisis cerebral (PC) es una encefalopatía no progresiva que provoca cambios en el tono muscular, postura y movimiento. (bvsalud.org)
  • New gadolinium-based contrast agents displaying larger relaxivity values and specifically targeted might provide higher resolution and better functional images. (preprints.org)
  • 0.1 Hz) spontaneous fUS signal fluctuations reproducibly report, at different coronal planes, overlapping high-contrast, intrinsic functional connectivity patterns. (nature.com)
  • This data-analysis technique is able to reconstruct several properties of the underlying neural population, such as quantitative estimates of the pRF position (maps), size as well as suppressive surrounds. (visionsciences.org)
  • My current research interest is focused on functional data analysis, which concerns curves and function-valued variables. (uwaterloo.ca)
  • In theoretical aspects, I am concerned about large sample properties of high dimensional functional regression models proposed for these data. (uwaterloo.ca)
  • In addition, to validate MRE techniques at any magnetic field, custom objects with controlled stiffness properties are built and synthetic data is produced from wave simulations. (unibas.ch)
  • Evaluate and assess magnetic data. (lu.se)
  • Researchers used functional magnetic resonance images (fMRIs) to record activity in the visual cortices of a pair of volunteers (two of the study's co-authors) while they viewed a series of images. (scientificamerican.com)
  • When the radio frequency is removed the hydrogen atoms all orient in the direction of the magnetic field, and in doing so produce magnetic fields that can be detected and used to construct an image based on the density of hydrogen atoms. (sfu.ca)
  • Low to ultra-low magnetic fields, in particular, benefit of intrinsic longer T 2 and T 2 *, as well as of a broader T 1 dispersion. (unibas.ch)
  • MRI uses magnetic fields and radio waves to produce images of thin slices of tissues (tomographic images). (msdmanuals.com)
  • Precision functional MRI mapping reveals distinct connectivity patterns for depression associated with traumatic brain injury. (neurotree.org)
  • This article aims to assess, discuss and analyze the disturbances caused by electromagnetic field (EMF) noise of medical devices used nearby living tissues, as well as the corresponding functional control via the electromagnetic compatibility (EMC) of these devices. (bvsalud.org)
  • The health and functions of the IVD are determined by the inherent biomechanical properties of the IVD and its interaction with external mechanical loading. (cdc.gov)
  • Do walking and cognition share the same functional brain networks? (ispgr.org)
  • However, it remains unclear whether and how these functional brain networks are involved in the control of walking. (ispgr.org)
  • Is it possible that these features are controlled by distinct functional brain networks? (ispgr.org)
  • Gait speed (A, C) and gait variability (B, D) are linked to distinct functional brain networks in functionally-limited older adults. (ispgr.org)