Leigh Johnston

Predicting individual improvement in schizophrenia symptom severity at 1-year follow-up: Comparison of connectomic, structural, and clinical predictors

Akhil Kottaram, Leigh A Johnston, Ye Tian, Eleni P Ganella, Liliana Laskaris, Luca Cocchi, Patrick McGorry, Christos Pantelis, Ramamohanarao Kotagiri, Vanessa Cropley, Andrew Zalesky

Journal article  |  2020  |  Human Brain Mapping

In a machine learning setting, this study aims to compare the prognostic utility of connectomic, brain structural, and clinical/de..

Microstructural correlates of 23Na relaxation in human brain at 7 Tesla.

Scott C Kolbe, Warda Syeda, Yasmin Blunck, Rebecca Glarin, Meng Law, Leigh A Johnston, Jon O Cleary

Journal article  |  2020  |  Neuroimage

23Na provides the second strongest MR-observable signal in biological tissue and exhibits bi-exponential T2∗ relaxation in micro-e..

Compressed sensing effects on quantitative analysis of undersampled human brain sodium MRI

Yasmin Blunck, Scott C Kolbe, Bradford A Moffat, Roger J Ordidge, Jon O Cleary, Leigh A Johnston

Journal article  |  2020  |  Magnetic Resonance in Medicine

Purpose The clinical application of sodium MRI is hampered due to relatively low image quality and associated long acquisition tim..

Spin Lock Adiabatic Correction (SLAC) for B-1-insensitive pulse design at 7T

Edward M Green, Yasmin Blunck, Bahman Tahayori, Peter M Farrell, James C Korte, Leigh A Johnston

Journal article  |  2019  |  Journal of Magnetic Resonance

A new framework for B1 insensitive adiabatic pulse design is proposed, denoted Spin Lock Adiabatic Correction (SLAC), which counte..

The Subplate: A Potential Driver of Cortical Folding?

Shreya Rana, Rosita Shishegar, Sebastian Quezada, Leigh Johnston, David W Walker, Mary Tolcos

Journal article  |  2019  |  Cerebral Cortex

In many species of Mammalia, the surface of the brain develops from a smooth structure to one with many fissures and folds, allowi..

Repeated mild traumatic brain injuries induce persistent changes in plasma protein and magnetic resonance imaging biomarkers in the rat

David K Wright, Rhys D Brady, Alaa Kamnaksh, Jack Trezise, Mujun Sun, Stuart J McDonald, Richelle Mychasiuk, Scott C Kolbe, Meng Law, Leigh A Johnston, Terence J O'Brien, Denes V Agoston, Sandy R Shultz

Journal article  |  2019  |  Scientific Reports

A single mild traumatic brain injury (mTBI) typically causes only transient symptoms, but repeated mTBI (RmTBI) is associated with..

Evolution of brain volume and hippocampal neurogenesis over 12 months after focal ischemia in adult rats

Charlotte Ermine, Warda Syeda, David Wright, Jessica Kauhausen, Stefano Frausin, Vanessa Brait, Katrina O'Brien, Jessica Nithianantharajah, Emilio Werden, Leigh Johnston, Amy Brodtmann, Lachlan Thompson

Conference Proceedings  |  2019  |  INTERNATIONAL JOURNAL OF STROKE

A continuum of T-2(*) components: Flexible fast fraction mapping in sodium MRI

Warda Syeda, Yasmin Blunck, Scott Kolbe, Jon O Cleary, Leigh A Johnston

Journal article  |  2019  |  Magnetic Resonance in Medicine

PURPOSE: Parameter mapping in sodium MRI data is challenging due to inherently low SNR and spatial resolution, prompting the need ..

Brain network dynamics in schizophrenia: Reduced dynamism of the default mode network

Akhil Kottaram, Leigh A Johnston, Luca Cocchi, Eleni P Ganella, Ian Everall, Christos Pantelis, Ramamohanarao Kotagiri, Andrew Zalesky

Journal article  |  2019  |  Human Brain Mapping

Validation of 'Somnivore', a Machine Learning Algorithm for Automated Scoring and Analysis of Polysomnography Data

Giancarlo Allocca, Sherie Ma, Davide Martelli, Matteo Cerri, Flavia Del Vecchio, Stefano Bastianini, Giovanna Zoccoli, Roberto Amici, Stephen R Morairty, Anne E Aulsebrook, Shaun Blackburn, John A Lesku, Niels C Rattenborg, Alexei L Vyssotski, Emma Wams, Kate Porcherer, Katharina Wulff, Russell Foster, Julia KM Chan, Christian L Nicholas, et al.

Journal article  |  2019  |  Frontiers in Neuroscience

Manual scoring of polysomnography data is labor-intensive and time-consuming, and most existing software does not account for subj..