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Neuroscientific Techniques x clear all

Anatomical Validation of DTI and Tractography

Nigel I. Lawes C. and Christopher A. Clark.

in Diffusion MRI

November 2010; p ublished online September 2012 .

Chapter. Subjects: Neuroscientific Techniques. 6121 words.

Attempts to validate diffusion tensor imaging (DTI) tractography meet two obstacles. Firstly, the factors causing problems are specific to each tract and specific to each species, so...

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Anisotropic Diffusion: From the Apparent Diffusion Coefficient to the Apparent Diffusion Tensor

Peter J. Basser and Evren Özarslan.

in Diffusion MRI

November 2010; p ublished online September 2012 .

Chapter. Subjects: Neuroscientific Techniques. 12548 words.

This chapter provides some conceptual underpinnings of diffusion tensor imaging (DTI). In particular, it explains isotropic and anisotropic diffusion and presents the definition of the...

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Are we ever aware of concepts? A critical question for the Global Neuronal Workspace, Integrated Information, and Attended Intermediate-Level Representation theories of consciousness

David Kemmerer.

in Neuroscience of Consciousness

P ublished online October 2015 .

Journal Article. Subjects: Neuroscience; Cognition and Behavioural Neuroscience; Neuroscientific Techniques; Cognitive Neuroscience; Consciousness. 9698 words.

To locate consciousness in the flow of synaptic activity in the brain, we must first locate it in the flow of information processing in the mind. Two different positions have been debated...

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Artifacts in Diffusion MRI

Carlo Pierpaoli.

in Diffusion MRI

November 2010; p ublished online September 2012 .

Chapter. Subjects: Neuroscientific Techniques. 11829 words.

In addition to thermal noise, several artifacts can adversely affect the accuracy and precision of diffusion MRI measures. This chapter identifies the most relevant sources of artifacts in...

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Autonomic correlates of seeing one’s own face in patients with disorders of consciousness

Sergio Bagnato, Cristina Boccagni, Caterina Prestandrea and Giuseppe Galardi.

in Neuroscience of Consciousness

P ublished online July 2015 .

Journal Article. Subjects: Neuroscience; Cognition and Behavioural Neuroscience; Neuroscientific Techniques; Cognitive Neuroscience; Consciousness. 5274 words.

The ability to recognize one’s own face is a hallmark of self-awareness. In healthy subjects, the sympathetic skin response evoked by self-face recognition has a greater area under the...

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Behavioral and electrophysiological evidence for fast emergence of visual consciousness

Henry Railo, Antti Revonsuo and Mika Koivisto.

in Neuroscience of Consciousness

P ublished online July 2015 .

Journal Article. Subjects: Neuroscience; Cognition and Behavioural Neuroscience; Neuroscientific Techniques; Cognitive Neuroscience; Consciousness. 8112 words.

A fundamental unsettled dispute concerns how fast the brain generates subjective visual experiences. Both early visual cortical activation and later activity in fronto-parietal global...

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The Biophysics of Crossing Fibers

Jacques-Donald Tournier.

in Diffusion MRI

November 2010; p ublished online September 2012 .

Chapter. Subjects: Neuroscientific Techniques. 14213 words.

Crossing fibers are increasingly acknowledged to be a significant problem, affecting both tractography and tensor-derived measures of anisotropy. Moreover, typical human scans have been...

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Biophysics of Diffusion in Cells

Joseph J.H. Ackerman and Jeffrey J. Neil.

in Diffusion MRI

November 2010; p ublished online September 2012 .

Chapter. Subjects: Neuroscientific Techniques. 12336 words.

Measurements of intracellular water diffusion in living tissue and quantitative interpretation of diffusion data are challenged by a number of things: the effects of a generally chaotic...

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Can working memory be non-conscious?

Timo Stein, Daniel Kaiser and Guido Hesselmann.

in Neuroscience of Consciousness

P ublished online February 2016 .

Journal Article. Subjects: Neuroscience; Cognition and Behavioural Neuroscience; Neuroscientific Techniques; Cognitive Neuroscience; Consciousness. 1576 words.

Working memory (WM) is closely linked to conscious awareness: In most conceptions of WM, the inputs to WM need to be conscious. The findings of some recent studies, however, have been taken...

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Connectivity-Based Parcellation of Gray Matter

Timothy Behrens, Johannes C. Klein, Saad Jbabdi and Heidi Johansen-Berg.

in Diffusion MRI

November 2010; p ublished online September 2012 .

Chapter. Subjects: Neuroscientific Techniques. 10348 words.

This chapter reviews recent techniques that use diffusion imaging to parcellate grey matter into regions of differing patterns of connections. The function of a grey matter region is...

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Contextual cueing of visual search is associated with greater subjective experience of the search display configuration

Bernhard Schlagbauer, Manuel Rausch, Michael Zehetleitner, Hermann J Müller and Thomas Geyer.

in Neuroscience of Consciousness

P ublished online March 2018 .

Journal Article. Subjects: Neuroscience; Cognition and Behavioural Neuroscience; Neuroscientific Techniques; Cognitive Neuroscience; Consciousness. 6881 words.

Abstract

Visual search is facilitated when display configurations are repeated over time, showing that memory of spatio-configural context can cue the location...

Controlling for performance capacity confounds in neuroimaging studies of conscious awareness

Jorge Morales, Jeffrey Chiang and Hakwan Lau.

in Neuroscience of Consciousness

P ublished online November 2015 .

Journal Article. Subjects: Neuroscience; Cognition and Behavioural Neuroscience; Neuroscientific Techniques; Cognitive Neuroscience; Consciousness. 7927 words.

Studying the neural correlates of conscious awareness depends on a reliable comparison between activations associated with awareness and unawareness. One particularly difficult confound to...

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The Cumulant Expansion: An Overarching Mathematical Framework For Understanding Diffusion NMR

Valerij G. Kiselev.

in Diffusion MRI

November 2010; p ublished online September 2012 .

Chapter. Subjects: Neuroscientific Techniques. 14046 words.

This chapter discusses a general property of diffusion-weighted signals from inhomogeneous media such as porous samples or biological tissues. In simple terms, this property is similar to...

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Deep Neural Networks in Computational Neuroscience

Tim C. Kietzmann, Patrick McClure and Nikolaus Kriegeskorte.

in Oxford Research Encyclopedia of Neuroscience

P ublished online January 2019 .

Article. Subjects: Cognition and Behavioural Neuroscience; Neuroscientific Techniques; Sensory and Motor Systems. 10861 words.

The goal of computational neuroscience is to find mechanistic explanations of how the nervous system processes information to give rise to cognitive function and behavior. At the heart of...

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Deterministic White Matter Tractography

Andrew L. Alexander.

in Diffusion MRI

November 2010; p ublished online September 2012 .

Chapter. Subjects: Neuroscientific Techniques. 7796 words.

The directional anisotropic information of the diffusion tensor provides a unique opportunity for estimating and modeling the trajectories of white matter tracts in the human brain...

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Diffusion, Diffraction, and Microimaging

Paul T. Callaghan.

in Diffusion MRI

November 2010; p ublished online September 2012 .

Chapter. Subjects: Neuroscientific Techniques. 2750 words.

This chapter presents a personal account and recounts science beginnings in a New Zealand childhood, an Oxford encounter with nuclear magnetism, and the return to New Zealand to start work...

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Diffusion Imaging in Brain Tumors

Aaron S. Field.

in Diffusion MRI

November 2010; p ublished online September 2012 .

Chapter. Subjects: Neuroscientific Techniques. 15652 words.

A wide variety of tumors and other space-occupying masses are encountered in clinical imaging, including cysts, abscesses, hematomas, and neoplasms of myriad cell types and grades. The...

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Diffusion Imaging in Gray Matter

Helen D’Arceuil and Alex de Crespigny.

in Diffusion MRI

November 2010; p ublished online September 2012 .

Chapter. Subjects: Neuroscientific Techniques. 9077 words.

This chapter presents the current status of diffusion tensor imaging (DTI) of the cerebral cortex with emphasis on high resolution DTI of the chemically fixed, excised cortex. The layered...

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Diffusion Imaging in Muscle

Gustav J. Strijkers, Maarten R. Drost and Klaas Nicolay.

in Diffusion MRI

November 2010; p ublished online September 2012 .

Chapter. Subjects: Neuroscientific Techniques. 14890 words.

Non-invasive imaging techniques to evaluate muscle structure, function, and metabolism are of tremendous importance for diagnosis and characterization of various muscle pathologies....

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Diffusion Imaging of the Optic Nerve, Spinal Cord, and Peripheral Nerve

Claudia A.M Wheeler-Kingshott and Olga Ciccarelli.

in Diffusion MRI

November 2010; p ublished online September 2012 .

Chapter. Subjects: Neuroscientific Techniques. 10375 words.

The optic nerve, spinal cord, and peripheral nerves are often affected by pathological processes, and, therefore, imaging these structures in-vivo is important in order to have information...

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