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Neuroscientific Techniques x clear all

Image Distortion and Its Correction in Diffusion MRI

Jesper L.R. Andersson and Stefan Skare.

in Diffusion MRI

November 2010; p ublished online September 2012 .

Chapter. Subjects: Neuroscientific Techniques. 11353 words.

The images acquired as part of a diffusion protocol suffer from geometric distortions. Some of these distortions are common to all images in the set, and lead to loss of anatomic fidelity...

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In the interest of saving time: a critique of discrete perception

Tomer Fekete, Sander Van de Cruys, Vebjørn Ekroll and Cees van Leeuwen.

in Neuroscience of Consciousness

P ublished online April 2018 .

Journal Article. Subjects: Neuroscience; Cognition and Behavioural Neuroscience; Neuroscientific Techniques; Cognitive Neuroscience; Consciousness. 6529 words.

Abstract

A recently proposed model of sensory processing suggests that perceptual experience is updated in discrete steps. We show that the data advanced to...

The influence of action-effect anticipation on bistable perception: differences between onset rivalry and ambiguous motion

Myrthel Dogge, Surya Gayet, Ruud Custers and Henk Aarts.

in Neuroscience of Consciousness

P ublished online April 2018 .

Journal Article. Subjects: Neuroscience; Cognition and Behavioural Neuroscience; Neuroscientific Techniques; Cognitive Neuroscience; Consciousness. 8873 words.

Abstract

Perception is strongly shaped by the actions we perform. According to the theory of event coding, and forward models of motor control, goal-directed...

Insights into Diffusion Tensor Imaging from Animal Models of White Matter Pathology

Matthew D. Budde and Sheng-Kwei Song.

in Diffusion MRI

November 2010; p ublished online September 2012 .

Chapter. Subjects: Neuroscientific Techniques. 7502 words.

Animal models of white matter injuries and diseases have revealed how specific pathologies contribute to diffusion changes within white matter tracts of the brain and spinal cord. Studies...

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Invasive Methods for Tracing White Matter Architecture

Hubertus Axer.

in Diffusion MRI

November 2010; p ublished online September 2012 .

Chapter. Subjects: Neuroscientific Techniques. 7458 words.

While the development of diffusion tensor imaging (DTI) has led to an increased interest in connectivity of the human brain, several non-MRI methods for two- (2D) and three-dimensional (3D)...

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Invention and Development of Diffusion Tensor MRI (DT-MRI or DTI) at the NIH

Peter J. Basser.

in Diffusion MRI

November 2010; p ublished online September 2012 .

Chapter. Subjects: Neuroscientific Techniques. 6721 words.

This chapter documents the invention and early development of diffusion tensor (DT) NMR and MRI. It recounts personal experiences with former NIH colleagues—Denis Le Bihan and James...

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Least Squares Approaches to Diffusion Tensor Estimation

Cheng Guan Koay.

in Diffusion MRI

November 2010; p ublished online September 2012 .

Chapter. Subjects: Neuroscientific Techniques. 13307 words.

Diffusion tensor imaging can be viewed as a data processing “pipeline” with various segments ranges from signal generation and detection to diffusion tensor estimation, and tractography....

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Magnetic Resonance Diffusion Imaging: Introduction and Concepts

Denis Le Bihan.

in Diffusion MRI

November 2010; p ublished online September 2012 .

Chapter. Subjects: Neuroscientific Techniques. 20516 words.

This chapter introduces the key concepts for understanding how images of molecular diffusion can be obtained with MRI and how to interpret them, taking into account the diffusion MRI...

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Manipulating word awareness dissociates feed-forward from feedback models of language-perception interactions

Jolien C. Francken, Erik L. Meijs, Odile M. Ridderinkhof, Peter Hagoort, Floris P. de Lange and Simon van Gaal.

in Neuroscience of Consciousness

P ublished online July 2015 .

Journal Article. Subjects: Neuroscience; Cognition and Behavioural Neuroscience; Neuroscientific Techniques; Cognitive Neuroscience; Consciousness. 6978 words.

Previous studies suggest that linguistic material can modulate visual perception, but it is unclear at which level of processing these interactions occur. Here we aim to dissociate between...

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Manipulation of working memory contents selectively impairs metacognitive sensitivity in a concurrent visual discrimination task

Brian Maniscalco and Hakwan Lau.

in Neuroscience of Consciousness

P ublished online July 2015 .

Journal Article. Subjects: Neuroscience; Cognition and Behavioural Neuroscience; Neuroscientific Techniques; Cognitive Neuroscience; Consciousness. 10357 words.

What are the cognitive mechanisms underlying perceptual metacognition? Prior research indicates that prefrontal cortex (PFC) contributes to metacognitive performance, suggesting that...

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Mathematics of Crossing Fibers

Daniel C. Alexander and Kiran K. Seunarine.

in Diffusion MRI

November 2010; p ublished online September 2012 .

Chapter. Subjects: Neuroscientific Techniques. 13664 words.

A limitation of diffusion tensor imaging is that it estimates only one fiber orientation and does not give reliable information at fiber crossings or other complex sub-voxel fibre...

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Moderate sedation induced by general anaesthetics disrupts audio-spatial feature binding with sustained P3 components in healthy humans

Takehiro Minamoto, Takashi Ikeda, Hongling Kang, Hiroshi Ito, Piyasak Vitayaburananont, Aya Nakae, Satoshi Hagihira, Yuji Fujino, Takashi Mashimo and Mariko Osaka.

in Neuroscience of Consciousness

P ublished online March 2018 .

Journal Article. Subjects: Neuroscience; Cognition and Behavioural Neuroscience; Neuroscientific Techniques; Cognitive Neuroscience; Consciousness. 7901 words.

Abstract

Feature binding is considered to be the basis for conscious stimulus perception, while anaesthetics exert a gradient effect on the loss of...

Network Analyses and Nervous System Disorders

John D. Medaglia and Danielle S. Bassett.

in Oxford Research Encyclopedia of Neuroscience

P ublished online September 2018 .

Article. Subjects: Neuroscientific Techniques; Disorders of the Nervous System. 16971 words.

Network analyses in nervous system disorders involve constructing and analyzing anatomical and functional brain networks from neuroimaging data to describe and predict the clinical...

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Neurobiology of White Matter Disorders

Christopher M. Filley.

in Diffusion MRI

November 2010; p ublished online September 2012 .

Chapter. Subjects: Neuroscientific Techniques. 9539 words.

White matter makes up approximately one-half of the brain's volume, and myelinated tracts course within and between the cerebral hemispheres to integrate gray matter structures into...

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Neuroscience of Consciousness

Journal. Subjects: Neuroscience; Cognition and Behavioural Neuroscience; Neuroscientific Techniques; Cognitive Neuroscience; Consciousness.

Non-EPI Pulse Sequences for Diffusion MRI

James G. Pipe.

in Diffusion MRI

November 2010; p ublished online September 2012 .

Chapter. Subjects: Neuroscientific Techniques. 7072 words.

Single-Shot echo planar imaging (SSEPI) is the most common data collection method for diffusion weighted MRI primarily because it is relatively immune to the undesired phase caused by...

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Normalization Principles in Computational Neuroscience

Kenway Louie and Paul W. Glimcher.

in Oxford Research Encyclopedia of Neuroscience

P ublished online July 2019 .

Article. Subjects: Neuroscientific Techniques. 17919 words.

A core question in systems and computational neuroscience is how the brain represents information. Identifying principles of information coding in neural circuits is critical to...

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Optimal Approaches to Diffusion MRI Acquisition

Derek K. Jones.

in Diffusion MRI

November 2010; p ublished online September 2012 .

Chapter. Subjects: Neuroscientific Techniques. 18678 words.

This chapter focuses on optimizing the acquisition of diffusion MRI data acquisitions. It outlines the theory of optimization and highlights the interplay between different parameters in...

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Phase Errors in Diffusion-Weighted Imaging

Roland Bammer, Samantha J. Holdsworth, Murat Aksoy and Stefan T. Skare.

in Diffusion MRI

November 2010; p ublished online September 2012 .

Chapter. Subjects: Neuroscientific Techniques. 23687 words.

One of the greatest technical challenges for diffusion-weighted imaging (DWI) is overcoming the phase errors originating from macroscopic motion, that is from bulk and physiologic motion,...

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Physics of Diffusion

Paul T. Callaghan.

in Diffusion MRI

November 2010; p ublished online September 2012 .

Chapter. Subjects: Neuroscientific Techniques. 10655 words.

This chapter discusses the history of diffusion theory and the measurement of diffusion by nuclear magnetic resonance (NMR) pulsed gradient methods. The idea of a conditional probability...

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