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Multi-Dipole Modeling in MEG

Riitta Salmelin

in MEG: An Introduction to Methods

Published in print:
2010
Published Online:
September 2010
ISBN:
9780195307238
eISBN:
9780199863990
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780195307238.003.0006
Subject:
Neuroscience, Behavioral Neuroscience, Techniques

The type of information one would typically like to extract from MEG data is approximate location of active brain areas, time course of activation in those areas, and the effect of task or stimulus ... More


 Institute for Physical Chemistry: 1923–1933

William Taussig Scott and Martin X. Moleski

in Michael Polanyi: Scientist and Philosopher

Published in print:
2005
Published Online:
July 2005
ISBN:
9780195174335
eISBN:
9780199835706
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/019517433X.003.0005
Subject:
Religion, Philosophy of Religion

After establishing his credentials as a scientist, Polanyi was transferred to the Kaiser Wilhelm Institute for Physical Chemistry and Electrochemistry and was allowed to focus on reaction rates and ... More


Food-Web Structure and Dynamics of East African Coral Reefs

Tim R. McClanahan

in Food Webs and the Dynamics of Marine Reefs

Published in print:
2008
Published Online:
May 2008
ISBN:
9780195319958
eISBN:
9780199869596
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780195319958.003.0007
Subject:
Biology, Aquatic Biology

This chapter describes the oceanography, biogeography, and management of coral reef ecosystems of East Africa. The chapter focuses on the role of marine protected areas and fishing in controlling ... More


Current Sources in a Homogeneous and Isotropic Medium

Paul L. Nunez and Ramesh Srinivasan

in Electric Fields of the Brain: The neurophysics of EEG

Published in print:
2006
Published Online:
May 2009
ISBN:
9780195050387
eISBN:
9780199865673
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780195050387.003.0005
Subject:
Neuroscience, Neuroendocrine and Autonomic, Techniques

This chapter demonstrates the relationship of current sources to recorded potentials in volume conductors using a simple salt water fish tank experiment consisting of a dipole current source and ... More


BASIC EXAMPLES

Juan Luis Vázquez

in The Porous Medium Equation: Mathematical Theory

Published in print:
2006
Published Online:
September 2007
ISBN:
9780198569039
eISBN:
9780191717468
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198569039.003.0004
Subject:
Mathematics, Mathematical Physics

This chapter presents five interesting categories of solutions that will play a role in the development of the theory of the book: separate-variables solutions, traveling waves, source-type ... More


Magnetic hysteresis

Mauro Fabrizio and Morro Angelo

in Electromagnetism of Continuous Media: Mathematical Modelling and Applications

Published in print:
2003
Published Online:
September 2007
ISBN:
9780198527008
eISBN:
9780191713316
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198527008.003.0012
Subject:
Mathematics, Applied Mathematics

Hysteresis is a phenomenon where nonlinearity and memory effects occur at the same time. This chapter describes a few models of magnetic hysteresis with particular emphasis on these two features. ... More


APPLICATIONS OF THE GAUGE AND FARADAY TRANSFORMATIONS

R. E. Raab and O. L. de Lange

in Multipole Theory in Electromagnetism: Classical, quantum, and symmetry aspects, with applications

Published in print:
2004
Published Online:
September 2007
ISBN:
9780198567271
eISBN:
9780191717970
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198567271.003.0008
Subject:
Physics, Atomic, Laser, and Optical Physics

The transformation theory of the previous chapter is applied to the first two orders of multipole theory (electric dipole and electric quadrupole-magnetic dipole orders) for both non-magnetic and ... More


Review of classical electrodynamics

Alan Corney

in Atomic and Laser Spectroscopy

Published in print:
2006
Published Online:
September 2007
ISBN:
9780199211456
eISBN:
9780191705915
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199211456.003.0002
Subject:
Physics, Atomic, Laser, and Optical Physics

This chapter introduces material relevant to the interaction of atoms and radiation. Maxwell's equations and the electromagnetic wave equation are introduced. The electric and magnetic fields ... More


THE REORIENTATION OF DEFECTS IN SOLIDS

A.M. Stoneham

in Theory of Defects in Solids: Electronic Structure of Defects in Insulators and Semiconductors

Published in print:
2001
Published Online:
September 2007
ISBN:
9780198507802
eISBN:
9780191709920
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198507802.003.0021
Subject:
Physics, Condensed Matter Physics / Materials

This chapter looks at the several classes of defect that can reorient between different crystal axes, either coherently or incoherently. Some such defects have an intrinsic dipole moment, like OH-, ... More


 The Fiber Institute: 1920–1923

William Taussig Scott and Martin X. Moleski

in Michael Polanyi: Scientist and Philosopher

Published in print:
2005
Published Online:
July 2005
ISBN:
9780195174335
eISBN:
9780199835706
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/019517433X.003.0004
Subject:
Religion, Philosophy of Religion

Fritz Haber hired Polanyi to work in the Fiber Chemistry Group of the Kaiser Wilhelm Institute in Berlin. Polanyi helped develop the rotating-crystal method of X-ray crystallography, made solid ... More


Giant dipole excitations

Helmut Hofmann

in The Physics of Warm Nuclei: with Analogies to Mesoscopic Systems

Published in print:
2008
Published Online:
September 2008
ISBN:
9780198504016
eISBN:
9780191708480
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198504016.003.0014
Subject:
Physics, Nuclear and Plasma Physics

This chapter discusses giant dipole excitations as the prime example for nuclear modes of isovector nature. Absorption and radiation of the classical dipole are described exploiting the benefits of ... More


Electric Fields and Currents in Biological Tissue

Paul L. Nunez and Ramesh Srinivasan

in Electric Fields of the Brain: The neurophysics of EEG

Published in print:
2006
Published Online:
May 2009
ISBN:
9780195050387
eISBN:
9780199865673
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780195050387.003.0004
Subject:
Neuroscience, Neuroendocrine and Autonomic, Techniques

This chapter continues the physical principles of Chapter 3 in the context of biological tissue. Electrophysiology spans about five orders of magnitude of spatial scale, ranging from the ... More


Current Sources in Inhomogeneous and Isotropic Media

Paul L. Nunez and Ramesh Srinivasan

in Electric Fields of the Brain: The neurophysics of EEG

Published in print:
2006
Published Online:
May 2009
ISBN:
9780195050387
eISBN:
9780199865673
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780195050387.003.0006
Subject:
Neuroscience, Neuroendocrine and Autonomic, Techniques

Potentials in inhomogeneous volume conductors depend on conductive properties of the different tissues in addition to the source-sink distributions. Whereas genuine tissue is anisotropic, this ... More


The Lifshitz Theory of Atom―Wall Interactions

M. Bordag, G. L. Klimchitskaya, U. Mohideen, and V. M. Mostepanenko

in Advances in the Casimir Effect

Published in print:
2009
Published Online:
September 2009
ISBN:
9780199238743
eISBN:
9780191716461
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199238743.003.0016
Subject:
Physics, Condensed Matter Physics / Materials, Atomic, Laser, and Optical Physics

This chapter obtains a Lifshitz-type formula for the atom-wall interaction considering one of the two walls as a rarefied medium. This formula is applied for various wall materials and various atoms. ... More


Interaction of light with matter

J. C. Garrison and R. Y. Chiao

in Quantum Optics

Published in print:
2008
Published Online:
September 2008
ISBN:
9780198508861
eISBN:
9780191708640
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198508861.003.0005
Subject:
Physics, Atomic, Laser, and Optical Physics

This chapter begins with a review of the semi-classical model of the interaction of charged particles with light, and then proceeds to the full quantum theory by replacing the classical fields with ... More


Gaseous alkali metal halides: ionic bonds

Arne Haaland

in Molecules and Models: The molecular structures of main group element compounds

Published in print:
2008
Published Online:
May 2008
ISBN:
9780199235353
eISBN:
9780191715594
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199235353.003.0005
Subject:
Physics, Condensed Matter Physics / Materials

The evaporation of an alkali metal halide (MX) yields a mixture of monomers and smaller amounts of dimers, trimers, and tetramers. This chapter describes the monomers in terms of their electric ... More


Other heteronuclear diatomic molecules: polar covalent bonds

Arne Haaland

in Molecules and Models: The molecular structures of main group element compounds

Published in print:
2008
Published Online:
May 2008
ISBN:
9780199235353
eISBN:
9780191715594
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199235353.003.0006
Subject:
Physics, Condensed Matter Physics / Materials

This chapter describes the structures of 25 heteronuclear, singly bonded diatomic molecules formed by combination of hydrogen, halogen, or alkali metal atoms (HX, HM, XX', or MM') in terms of their ... More


Structure and bonding in the gaseous dihalides and dialkyl derivatives of the Group 2 and Group 12 metals

Arne Haaland

in Molecules and Models: The molecular structures of main group element compounds

Published in print:
2008
Published Online:
May 2008
ISBN:
9780199235353
eISBN:
9780191715594
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780199235353.003.0010
Subject:
Physics, Condensed Matter Physics / Materials

This chapter opens with a discussion of the difficulties of establishing unequivocally whether a monomeric, gaseous Group 2 metal dihalide has a linear or angular equilibrium structure. The ... More


ELECTRIC DEFLEXION AND RESONANCE EXPERIMENTS

Norman F. Ramsey

in Molecular Beams

Published in print:
1986
Published Online:
September 2007
ISBN:
9780198520214
eISBN:
9780191706325
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198520214.003.0010
Subject:
Physics, Atomic, Laser, and Optical Physics

Since molecules consist of positive and negative particles, they can have electric dipole moments when oriented in electric fields and a molecular beam can be deflected in a non-uniform electric ... More


NEUTRON BEAM MAGNETIC RESONANCE

Norman F. Ramsey

in Molecular Beams

Published in print:
1986
Published Online:
September 2007
ISBN:
9780198520214
eISBN:
9780191706325
Item type:
chapter
Publisher:
Oxford University Press
DOI:
10.1093/acprof:oso/9780198520214.003.0007
Subject:
Physics, Atomic, Laser, and Optical Physics

Neutron beam magnetic resonance experiments with slow neutrons are very similar to corresponding molecular beam experiments. Methods of polarizing neutron beams by total reflection and other means ... More


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