John Evans

Breathlessness catastrophising after COVID-19 involves both interoceptive and visceromotor connectivity

This study identifies two brain connectivity patterns associated with breathlessness catastrophising in post-COVID patients, suggesting both interoceptive and visceromotor pathway alterations.

Open-Source Framework for Measurement of the Gradient Impulse Response Function

The paper presents an open-source framework for measuring the Gradient Impulse Response Function (GIRF) in MRI, enabling reproducible and accessible scanner-specific GIRF characterization.

Age and IFN-β-induced changes in glial morphometry can be captured by in vivo diffusion-weighted magnetic resonance spectroscopy.

This study uses dMRS to show IFN-β increases thalamic tCho diffusivity and age is linked to lower tNAA diffusivity and higher tCho/tCr in white matter.

Cardiac diffusion kurtosis imaging in the human heart in vivo using 300mT/m gradients

This paper demonstrates the feasibility of cardiac diffusion kurtosis imaging (DKI) in humans using high gradient strength MRI, showing non-Gaussian water diffusion behavior and significant radial kurtosis differences.

Multimodal MEG and microstructure-MRI investigations of the human hippocampal scene network

This study investigates the functional and structural properties of hippocampal networks involved in scene and face perception using MEG and diffusion MRI in humans.

LONGITUDINAL CHANGES IN WHITE MATTERMICROSTRUCTURAL STATUS FOLLOWING QUANTIFIEDHEAD-BALL IMPACTS IN SOCCER: A PRELIMINARY,PROSPECTIVE STUDY.

This study tracks white matter microstructural changes after soccer headers using MRI, finding correlations between impact magnitude and microstructural alterations.

Surface-based tracking for short association fibre tractography

This paper develops a surface-based tractography method for short association fibres in the human brain, showing it produces longer streamlines and high cortical coverage but with limited reliability and repeatability.

Evidence against altered excitatory/inhibitory balance in the posteromedial cortex of young adult APOE E4 carriers: a resting state 1H-MRS study

This study uses 1H-MRS to examine excitatory/inhibitory balance in the posteromedial cortex of young APOE E4 carriers and finds no evidence of altered neurotransmitter levels.

Genetic risk of dementia modifies the impact of obesity on limbic white matter and spatial navigation behavior in cognitively healthy adults.

Mapping axon conduction delays in vivo from microstructural MRI

This paper estimates axon conduction velocity in vivo from MRI parameters, showing that 89.2% of variance is explained by axon diameter and g-ratio, with accurate estimates achievable under certain parameter bounds.

Neurochemical correlates of scene processing in the precuneus/posterior cingulate cortex: a multimodal fMRI and 1H-MRS study

The paper investigates the relationship between scene processing in the precuneus/posterior cingulate cortex (PCu/PCC) and local neurochemical levels using fMRI and 1H-MRS, finding a positive correlation between scene-related BOLD activity and tNAA levels.

Superoanterior Fasciculus (SAF): Novel fiber tract revealed by diffusion MRI fiber tractography

The paper identifies a new white matter tract, the superoanterior fasciculus, using diffusion MRI tractography and validates it across multiple cohorts and techniques.

The causal structure of age-dependent limbic decline: fornix white matter glia damage causes hippocampal grey matter damage, not vice versa.

The paper investigates the causal relationship between white and gray matter damage in aging brains, finding that white matter damage causes gray matter decline, not the reverse.

Adipokines contribute to central-obesity related reductions in myelin-sensitive MRI indices in the fornix.

The paper examines how central obesity affects myelin-sensitive MRI metrics in the fornix and finds that visceral fat and adipokine ratios are linked to reduced myelin and increased inflammation.