Search Results - "Evans, John C"

Cross-scanner and cross-protocol diffusion MRI data harmonisation: A benchmark database and evaluation of algorithms by Tax, Chantal MW, Grussu, Francesco, Kaden, Enrico, Ning, Lipeng, Rudrapatna, Umesh, John Evans, C., St-Jean, Samuel, Leemans, Alexander, Koppers, Simon, Merhof, Dorit, Ghosh, Aurobrata, Tanno, Ryutaro, Alexander, Daniel C., Zappalà, Stefano, Charron, Cyril, Kusmia, Slawomir, Linden, David EJ, Jones, Derek K., Veraart, Jelle

“…Diffusion MRI is being used increasingly in studies of the brain and other parts of the body for its ability to provide quantitative measures that are…”
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Frequency and phase drift correction of magnetic resonance spectroscopy data by spectral registration in the time domain by Near, Jamie, Edden, Richard, Evans, C. John, Paquin, Raphaël, Harris, Ashley, Jezzard, Peter

“…Purpose Frequency and phase drifts are a common problem in the acquisition of in vivo magnetic resonance spectroscopy (MRS) data. If not accounted for,…”
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Gannet: A batch-processing tool for the quantitative analysis of gamma-aminobutyric acid-edited MR spectroscopy spectra by Edden, Richard A.E., Puts, Nicolaas A.J., Harris, Ashley D., Barker, Peter B., Evans, C. John

“…Purpose The purpose of this study is to describe the Gannet toolkit for the quantitative batch analysis of gamma‐aminobutyric acid (GABA) ‐edited MRS data…”
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Estimating axon conduction velocity in vivo from microstructural MRI by Drakesmith, Mark, Harms, Robbert, Rudrapatna, Suryanarayana Umesh, Parker, Greg D., Evans, C. John, Jones, Derek K.

“…The conduction velocity (CV) of action potentials along axons is a key neurophysiological property central to neural communication. The ability to estimate CV…”
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Current practice in the use of MEGA-PRESS spectroscopy for the detection of GABA by Mullins, Paul G., McGonigle, David J., O'Gorman, Ruth L., Puts, Nicolaas A.J., Vidyasagar, Rishma, Evans, C. John, Edden, Richard A.E.

“…There is increasing interest in the use of edited proton magnetic resonance spectroscopy for the detection of GABA in the human brain. At a recent meeting held…”
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Regionally specific human GABA concentration correlates with tactile discrimination thresholds by Puts, Nicolaas A J, Edden, Richard A E, Evans, C John, McGlone, Francis, McGonigle, David J

“…The neural mechanisms underlying variability in human sensory perception remain incompletely understood. In particular, few studies have attempted to…”
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Early Cannabis Use, Polygenic Risk Score for Schizophrenia and Brain Maturation in Adolescence by French, Leon, Gray, Courtney, Leonard, Gabriel, Perron, Michel, Pike, G Bruce, Richer, Louis, Séguin, Jean R, Veillette, Suzanne, Evans, C John, Artiges, Eric, Banaschewski, Tobias, Bokde, Arun W L, Bromberg, Uli, Bruehl, Ruediger, Buchel, Christian, Cattrell, Anna, Conrod, Patricia J, Flor, Herta, Frouin, Vincent, Gallinat, Jurgen, Garavan, Hugh, Gowland, Penny, Heinz, Andreas, Lemaitre, Herve, Martinot, Jean-Luc, Nees, Frauke, Orfanos, Dimitri Papadopoulos, Pangelinan, Melissa Marie, Poustka, Luise, Rietschel, Marcella, Smolka, Michael N, Walter, Henrik, Whelan, Robert, Timpson, Nic J, Schumann, Gunter, Smith, George Davey, Pausova, Zdenka, Paus, Tomáš

“…Cannabis use during adolescence is known to increase the risk for schizophrenia in men. Sex differences in the dynamics of brain maturation during adolescence…”
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Physiological effects of human body imaging with 300 mT/m gradients by Molendowska, Malwina, Fasano, Fabrizio, Rudrapatna, Umesh, Kimmlingen, Ralph, Jones, Derek K., Kusmia, Slawomir, Tax, Chantal M. W., Evans, C. John

“…Purpose The use of high‐performance gradient systems (i.e., high gradient strength and/or high slew rate) for human MRI is limited by physiological effects…”
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MICRA: Microstructural image compilation with repeated acquisitions by Koller, Kristin, Rudrapatna, Umesh, Chamberland, Maxime, Raven, Erika P., Parker, Greg D., Tax, Chantal M.W., Drakesmith, Mark, Fasano, Fabrizio, Owen, David, Hughes, Garin, Charron, Cyril, Evans, C John, Jones, Derek K.

“…We provide a rich multi-contrast microstructural MRI dataset acquired on an ultra-strong gradient 3T Connectom MRI scanner comprising 5 repeated sets of MRI…”
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Cortical and subcortical functional specificity associated with response inhibition by Maizey, Leah, Evans, C. John, Muhlert, Nils, Verbruggen, Frederick, Chambers, Christopher D., Allen, Christopher P.G.

“…Is motor response inhibition supported by a specialised neuronal inhibitory control mechanism, or by a more general system of action updating? This…”
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Individual variability in the shape and amplitude of the BOLD-HRF correlates with endogenous GABAergic inhibition by Muthukumaraswamy, Suresh D., Evans, C. John, Edden, Richard A.E., Wise, Richard G., Singh, Krish D.

“…It has previously been demonstrated that there is a negative correlation between the amplitude of the BOLD response and resting γ amino‐butyric acid (GABA)…”
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More GABA, less distraction: a neurochemical predictor of motor decision speed by Sumner, Petroc, Edden, Richard A E, Bompas, Aline, Evans, C John, Singh, Krish D

“…People vary markedly in the efficiency with which they can resolve competitive action decisions, even simple ones such as shifting gaze to one stimulus rather…”
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Effect of Early Adversity and Childhood Internalizing Symptoms on Brain Structure in Young Men by Jensen, Sarah K G, Dickie, Erin W, Schwartz, Deborah H, Evans, C John, Dumontheil, Iroise, Paus, Tomáš, Barker, Edward D

“…Early adversity is an important risk factor that relates to internalizing symptoms and altered brain structure. To assess the direct effects of early adversity…”
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Practical considerations of diffusion-weighted MRS with ultra-strong diffusion gradients by Davies-Jenkins, Christopher W, Döring, André, Fasano, Fabrizio, Kleban, Elena, Mueller, Lars, Evans, C John, Afzali, Maryam, Jones, Derek K, Ronen, Itamar, Branzoli, Francesca, Tax, Chantal M W

“…Diffusion-weighted magnetic resonance spectroscopy (DW-MRS) offers improved cellular specificity to microstructure-compared to water-based methods alone-but…”
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Subtraction artifacts and frequency (Mis-)alignment in J-difference GABA editing by Evans, C. John, Puts, Nicolaas A.J., Robson, Siân E., Boy, Frederic, McGonigle, David J., Sumner, Petroc, Singh, Krish D., Edden, Richard A.E.

“…Purpose To compare the repeatability of γ‐aminobutyric acid (GABA) measurements using J‐difference editing, before and after spectral realignment—a technique…”
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Neurochemical correlates of scene processing in the precuneus/posterior cingulate cortex: A multimodal fMRI and 1H‐MRS study by Costigan, Alison G., Umla‐Runge, Katja, Evans, C. John, Hodgetts, Carl J., Lawrence, Andrew D., Graham, Kim S.

“…Precuneus/posterior cingulate cortex (PCu/PCC) are key components of a midline network, activated during rest but also in tasks that involve construction of…”
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Three-dimensional magnetic resonance imaging of the phakic crystalline lens during accommodation by Sheppard, Amy L, Evans, C John, Singh, Krish D, Wolffsohn, James S, Dunne, Mark C M, Davies, Leon N

“…To quantify changes in crystalline lens curvature, thickness, equatorial diameter, surface area, and volume during accommodation using a novel two-dimensional…”
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The relationship between fearfulness, GABA+, and fear-related BOLD responses in the insula by Lipp, Ilona, Evans, C John, Lewis, Caroline, Murphy, Kevin, Wise, Richard G, Caseras, Xavier

“…The inhibitory neurotransmitter GABA plays a crucial role in anxiety and fear, but its relationship to brain activation during fear reactions is not clear…”
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Marked Reductions in Visual Evoked Responses But Not γ-Aminobutyric Acid Concentrations or γ-Band Measures in Remitted Depression by Shaw, Alexander, Brealy, Jennifer, Richardson, Heather, Muthukumaraswamy, Suresh D, Edden, Richard A, John Evans, C, Puts, Nicolaas A.J, Singh, Krishna D, Keedwell, Paul A

“…Abstract Background Magnetic resonance spectroscopy (MRS) studies have consistently demonstrated reduced cortical γ-aminobutyric acid (GABA) concentrations in…”
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"Brain MR spectroscopy in autism spectrum disorder-the GABA excitatory/inhibitory imbalance theory revisited" by Brix, Maiken K, Ersland, Lars, Hugdahl, Kenneth, Grüner, Renate, Posserud, Maj-Britt, Hammar, Åsa, Craven, Alexander R, Noeske, Ralph, Evans, C John, Walker, Hanne B, Midtvedt, Tore, Beyer, Mona K

“…Magnetic resonance spectroscopy (MRS) from voxels placed in the left anterior cingulate cortex (ACC) was measured from 14 boys with Autism Spectrum Disorder…”
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