Results 21 to 30 of about 372,517 (152)

Paradoxical pinching effect in probabilistic tractography

Probabilistic diffusion MRI tractography generates streamlines by iteratively sampling directions from a local fiber orientation distribution function (fODF), usually under an angular constraint of aperture $\alpha$ around the previous direction.
Deslauriers-Gauthier, Samuel, Veltz, Romain   +1 more
core   +3 more sources

Connectivity Patterns of Deep Brain Stimulation Targets in Patients with Gilles de la Tourette Syndrome

Brain Sciences, 2021
Since 1999, several targets for deep brain stimulation (DBS) in Gilles de la Tourette syndrome (GTS) have emerged showing similar success rates. Studies using different tractography techniques have identified connectivity profiles associated with a ...
Petra Heiden, Mauritius Hoevels, Dilruba Bayram, Juan C. Baldermann, Thomas Schüller, Daniel Huys, Veerle Visser-Vandewalle, Pablo Andrade   +7 more
doaj   +1 more source

CTtrack: A CNN+Transformer-based framework for fiber orientation estimation & tractography

Neuroscience Informatics, 2022
In recent years, multiple data-driven fiber orientation distribution function (fODF) estimation algorithms and automatic tractography pipelines have been proposed to address the limitations of traditional methods. However, these approaches lack precision
S.M.H. Hosseini, M. Hassanpour, S. Masoudnia, S. Iraji, S. Raminfard, M. Nazem-Zadeh   +5 more
doaj   +1 more source

Novel Approach for Improved Tractography and Quantitative Analysis of Probabilistic Fibre Tracking Curves [PDF]

, 2012
This paper presents a novel approach for improved diffusion tensor fibre tractography, aiming to tackle a number of the limitations of current fibre tracking algorithms, and describes a quantitative analysis tool for probabilistic tracking algorithms. We
Oleg Davydov, Hojjatoleslami, Ali, Ratnarajah, Nagulan, Ratnarajah, N., Simmons, A., Andrew Simmons, Davydov, Oleg, Ali Hojjatoleslami, Nagulan Ratnarajah, Simmons, Andrew, Simmons, Andy   +10 more
core   +1 more source

A novel approach for improved tractography and quantitative analysis of probabilistic fibre tracking curves [PDF]

, 2012
This paper presents a novel approach for improved diffusion tensor fibre tractography, aiming to tackle a number of the limitations of current fibre tracking algorithms, and describes a quantitative analysis tool for probabilistic tracking algorithms. We
Hojjatoleslami, Ali, Ratnarajah, N., Simmons, A., Davydov, Oleg   +3 more
core   +2 more sources

On the cortical connectivity in the macaque brain: A comparison of diffusion tractography and histological tracing data

NeuroImage, 2020
Diffusion-weighted magnetic resonance imaging (DW-MRI) tractography is a non-invasive tool to probe neural connections and the structure of the white matter.
Gabriel Girard, Roberto Caminiti, Alexandra Battaglia-Mayer, Etienne St-Onge, Karen S. Ambrosen, Simon F. Eskildsen, Kristine Krug, Tim B. Dyrby, Maxime Descoteaux, Jean-Philippe Thiran, Giorgio M. Innocenti   +10 more
doaj   +1 more source

Imaging versus electrographic connectivity in human mood-related fronto-temporal networks

Brain Stimulation, 2022
Background: The efficacy of psychiatric DBS is thought to be driven by the connectivity of stimulation targets with mood-relevant fronto-temporal networks, which is typically evaluated using diffusion-weighted tractography.
Joshua A. Adkinson, Evangelia Tsolaki, Sameer A. Sheth, Brian A. Metzger, Meghan E. Robinson, Denise Oswalt, Cameron C. McIntyre, Raissa K. Mathura, Allison C. Waters, Anusha B. Allawala, Angela M. Noecker, Mahsa Malekmohammadi, Kevin Chiu, Richard Mustakos, Wayne Goodman, David Borton, Nader Pouratian, Kelly R. Bijanki   +17 more
doaj   +1 more source

Probabilistic functional tractography of the human cortex

NeuroImage, 2013
Single-pulse direct electrical stimulation of cortical regions in patients suffering from focal drug-resistant epilepsy who are explored using intracranial electrodes induces cortico-cortical potentials that can be used to infer functional and anatomical connectivity.
Olivier David 0001, Anne-Sophie Job, Luca De Palma, Dominique Hoffmann, Lorella Minotti, Philippe Kahane   +5 more
openaire   +2 more sources

Addressing the path-length-dependency confound in white matter tract segmentation.

PLoS ONE, 2014
We derive the Iterative Confidence Enhancement of Tractography (ICE-T) framework to address the problem of path-length dependency (PLD), the streamline dispersivity confound inherent to probabilistic tractography methods.
Matthew G Liptrot, Karam Sidaros, Tim B Dyrby   +2 more
doaj   +1 more source

Strength of Ventral Tegmental Area Connections With Left Caudate Nucleus Is Related to Conflict Monitoring

Frontiers in Psychology, 2020
Successful learning requires the control of attention to monitor performance and compare actual versus expected outcomes. Neural activity in the ventral tegmental area (VTA) has been linked to attention control in animals.
Ping C. Mamiya, Todd Richards, Neva M. Corrigan, Patricia K. Kuhl   +3 more
doaj   +1 more source