'Bold contrast' diaporamas de présentation

Itti: CS564 - Brain Theory and Artificial Intelligence University of Southern California

1.48k views • 120 slides

Peter A. Bandettini, Ph.D. Unit on Functional Imaging Methods

1.12k views • 96 slides

BOLD fMRI John VanMeter, Ph.D. Center for Functional and Molecular Imaging

BOLD fMRI John VanMeter, Ph.D. Center for Functional and Molecular Imaging Georgetown University Medical Center. Outline. BOLD contrast fMRI conceptually Relationship between BOLD contrast and hemodynamics History of BOLD contrast

1.13k views • 85 slides

Are You fMRI Experienced?

Are You fMRI Experienced?. Peter A. Bandettini, Ph.D Unit on Functional Imaging Methods & 3T Neuroimaging Core Facility Laboratory of Brain and Cognition National Institute of Mental Health. The experimental hypothesis Scanner variables Physiologic variables Subject interface variables

945 views • 81 slides

Are You fMRI Experienced?

Are You fMRI Experienced?. Peter A. Bandettini, Ph.D Unit on Functional Imaging Methods & 3T Neuroimaging Core Facility Laboratory of Brain and Cognition National Institute of Mental Health. The experimental hypothesis Scanner variables Physiologic variables Subject interface variables

813 views • 81 slides

BOLD fMRI

BOLD fMRI. BIAC Graduate fMRI Course October 5, 2005. Why do we need to know physics/physiology of fMRI?. To understand the implications of our results Interpreting activation extent, timing, etc. Determining the strength of our conclusions Exploring new and unexpected findings

890 views • 54 slides

BOLD fMRI

BOLD fMRI. BIAC Graduate fMRI Course October 5, 2005. Why do we need to know physics/physiology of fMRI?. To understand the implications of our results Interpreting activation extent, timing, etc. Determining the strength of our conclusions Exploring new and unexpected findings

593 views • 54 slides

BOLD fMRI

BOLD fMRI. BIAC Graduate fMRI Course October 1, 2003. Why do we need to know physics/physiology of fMRI?. To understand the implications of our results Interpreting activation extent, timing, etc. Determining the strength of our conclusions Exploring new and unexpected findings

776 views • 52 slides

The Basis of the BOLD Signal

The Basis of the BOLD Signal. Paul Forbes & Camilla Nord. Outline. Physics (Paul) Physiology (Camilla). Physics of the BOLD signal. BOLD and NMR. To understand the basis of the BOLD signal we first need to understand Nuclear Magnetic Resonance (NMR). Nuclear Magnetic Resonance. Nuclear

506 views • 47 slides

Functional MRI: Image Contrast and Acquisition

Functional MRI: Image Contrast and Acquisition. Karla L. Miller FMRIB Centre, Oxford University. Functional MRI Acquisition. Basics of FMRI FMRI Contrast: The BOLD Effect Standard FMRI Acquisition Confounds and Limitations Beyond the Basics New Frontiers in FMRI

508 views • 42 slides

Advanced MRI Methods

Advanced MRI Methods. Atam P Dhawan. Functional MRI (fMRI). fMRI aims to measure the hemodynamic response related to neural activity. Can measures changes in blood oxygenation levls in neural tissue (in brain or nervous systems).

539 views • 33 slides

Neuronal Activity & Hemodynamics John VanMeter, Ph.D. Center for Functional and Molecular Imaging

Neuronal Activity & Hemodynamics John VanMeter, Ph.D. Center for Functional and Molecular Imaging Georgetown University Medical Center. Outline. BOLD contrast fMRI conceptually Relationship between BOLD contrast and hemodynamics Cellular energy processes

377 views • 28 slides

BOLD Contrast: Functional Imaging with MRI

BOLD Contrast: Functional Imaging with MRI. Mark A. Elliott, PhD Department of Radiology University of Pennsylvania. Overview. Mechanisms of functional imaging with MRI Methodology of fMRI Issues for animal studies Spatial and temporal sensitivy of fMRI. electrical activity. - excitatory.

732 views • 24 slides

Brain magnetic resonance imaging with contrast dependent on blood oxygenation

Brain magnetic resonance imaging with contrast dependent on blood oxygenation. Ogawa et al. PNAS (1990) 87 :9868. Introduction. Blood oxygenation level dependent (BOLD) contrast recently discovered Two previous Ogawa et al. papers, also 1990

213 views • 8 slides