User profiles for Fernando Zelaya

Fernando Zelaya

Neuroimaging Department, Institute of Psychiatry, King's College London
Verified email at kcl.ac.uk
Cited by 10804

Diffraction-like effects in NMR diffusion studies of fluids in porous solids

…, A Coy, D MacGowan, KJ Packer, FO Zelaya - Nature, 1991 - nature.com
THE transport of fluids in porous media is of importance in a wide range of areas, such as oil
recovery, heterogeneous catalysis and biological perfusion. The pulsed gradient spin-echo (…

[HTML][HTML] A link between FTO, ghrelin, and impaired brain food-cue responsivity

…, JC Brüning, DJ Withers, FO Zelaya… - The Journal of …, 2013 - Am Soc Clin Investig
Polymorphisms in the fat mass and obesity-associated gene (FTO) are associated with human
obesity and obesity-prone behaviors, including increased food intake and a preference …

Loss of connectivity in Alzheimer's disease: an evaluation of white matter tract integrity with colour coded MR diffusion tensor imaging

SE Rose, F Chen, JB Chalk, FO Zelaya… - Journal of Neurology …, 2000 - jnnp.bmj.com
A NOVEL MRI METHOD diffusion tensor imaging—was used to compare the integrity of several
white matter fibre tracts in patients with probable Alzheimer's disease. Relative to normal …

PYY modulation of cortical and hypothalamic brain areas predicts feeding behaviour in humans

RL Batterham, DH Ffytche, JM Rosenthal, FO Zelaya… - Nature, 2007 - nature.com
The ability to maintain adequate nutrient intake is critical for survival. Complex interrelated
neuronal circuits have developed in the mammalian brain to regulate many aspects of feeding …

Colored noise and computational inference in neurophysiological (fMRI) time series analysis: resampling methods in time and wavelet domains

…, J Suckling, J Fadili, G Calvert, F Zelaya… - Human brain …, 2001 - Wiley Online Library
Even in the absence of an experimental effect, functional magnetic resonance imaging (fMRI)
time series generally demonstrate serial dependence. This colored noise or endogenous …

Dehydration affects brain structure and function in healthy adolescents

…, GA Calvert, A Hampshire, FO Zelaya… - Human brain …, 2011 - Wiley Online Library
It was recently observed that dehydration causes shrinkage of brain tissue and an associated
increase in ventricular volume. Negative effects of dehydration on cognitive performance …

Measuring fMRI reliability with the intra-class correlation coefficient

A Caceres, DL Hall, FO Zelaya, SCR Williams… - Neuroimage, 2009 - Elsevier
The intra-class class correlation coefficient (ICC) is a prominent statistic to measure test–retest
reliability of fMRI data. It can be used to address the question of whether regions of high …

The effect of negative emotional context on neural and behavioural responses to oesophageal stimulation

…, V Ng, C Andrew, V Giampietro, E Bullmore, F Zelaya… - Brain, 2003 - academic.oup.com
Sensory experience is influenced by emotional context. Although perception of emotion and
unpleasant visceral sensation are associated with activation within the insula and dorsal …

Distinct roles of prefrontal cortical subregions in the Iowa Gambling Task

NS Lawrence, F Jollant, O O'Daly, F Zelaya… - Cerebral …, 2009 - academic.oup.com
The Iowa Gambling Task (IGT) assesses decision-making under initially ambiguous
conditions. Neuropsychological and neuroimaging data suggest, albeit inconsistently, the …

Diffusion in porous systems and the influence of pore morphology in pulsed gradient spin‐echo nuclear magnetic resonance studies

…, D MacGowan, KJ Packer, FO Zelaya - The Journal of …, 1992 - pubs.aip.org
We report a combined experimental, theoretical, and simulation study of pulsed gradient
spinecho (PGSE) nuclear magnetic resonance (NMR) for fluid saturated porous media. A …