Andrew Simmons

TL;DR: It is suggested that, in some brain regions, non-negative constraints alone may not be sufficient to reduce spurious fibre orientations, and a newly developed spherical deconvolution algorithm based on an adaptive regularization (damped version of the Richardson-Lucy algorithm) has the potential for better characterizing white matter anatomy and the integrity of pathological tissue.

TL;DR: The association between hippocampal volumes and cognition was not altered by ICV normalization, and comparing prediction of diagnostic status using the different approaches, small but significant differences were found.

TL;DR: It is suggested that a neural network involving the right hemisphere in conjunction with left-sided associative and executive regions underlies the process of visual self-recognition and produces the unique experience of self-awareness.

TL;DR: A number of sources of nonuniformity for spin echo images at 1.5 T are described, and the use of uniform oil phantoms is shown to be superior to low pass filtered images for correction of image non uniformity.

TL;DR: It is shown that the hindrance modulated orientational anisotropy (HMOA) index, defined as the absolute amplitude of each lobe of the fiber orientation distribution, can be used as a compact measure to characterize the diffusion properties along each fiber orientation in white matter regions with complex organization.