Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Electric Dipoles and Dipole Moment01:30

Electric Dipoles and Dipole Moment

Consider two charges of equal magnitude but opposite signs. If they cannot be separated by an external electric field, the system is called a permanent dipole. For example, the water molecule is a dipole, making it a good solvent.
Theoretically, studying electric dipoles leads to understanding why the resultant electric forces around us are weak. Since electric forces are strong, remnant net charges are rare. Hence, the interaction between dipoles helps us understand electrical interactions in...
One-Compartment Open Model: Wagner-Nelson and Loo Riegelman Method for ka Estimation01:24

One-Compartment Open Model: Wagner-Nelson and Loo Riegelman Method for ka Estimation

This lesson introduces two critical methods in pharmacokinetics, the Wagner-Nelson and Loo-Riegelman methods, used for estimating the absorption rate constant (ka) for drugs administered via non-intravenous routes. The Wagner-Nelson method relates ka to the plasma concentration derived from the slope of a semilog percent unabsorbed time plot. However, it is limited to drugs with one-compartment kinetics and can be impacted by factors like gastrointestinal motility or enzymatic degradation.
On...
Induced Electric Dipoles01:29

Induced Electric Dipoles

A permanent electric dipole orients itself along an external electric field. This rotation can be quantified by defining the potential energy because the external torque does work in rotating it. Then, the potential energy is minimum at the parallel configuration and maximum at the antiparallel configuration. While the former is a stable equilibrium, the latter is an unstable equilibrium.
Since the absolute value of potential energy holds no physical meaning, its zero value can be chosen as per...
¹H NMR: Complex Splitting01:13

¹H NMR: Complex Splitting

A proton M that is coupled to a proton X results in doublet signals for M. However, NMR-active nuclei can be simultaneously coupled to more than one nonequivalent nucleus. When M is coupled to a second proton A, such as in styrene oxide, each peak in the doublet is split into another doublet.
Splitting diagrams or splitting tree diagrams are routinely used to depict such complex couplings. While drawing splitting diagrams, the splitting with the larger coupling constant is usually applied first.

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Effect of model complexity on EEG source localizations.

Neurology & clinical neurophysiology : NCN·2005
Same author

The influence of brain tissue anisotropy on human EEG and MEG.

NeuroImage·2002
Same author

Analysis of defibrillation efficacy from myocardial voltage gradients with finite element modeling.

IEEE transactions on bio-medical engineering·1999
Same author

Geometric effects on resistivity measurements with four-electrode probes in isotropic and anisotropic tissues.

IEEE transactions on bio-medical engineering·1998
Same author

Sensitivity of transvenous defibrillation models to adaptive mesh density and resolution: the potential for interactive solution times.

International journal of medical informatics·1997
Same author

Object-free adaptive meshing in highly heterogeneous 3-D domains.

International journal of bio-medical computing·1996

Related Experiment Video

Updated: Jul 17, 2026

Mapping Cortical Dynamics Using Simultaneous MEG/EEG and Anatomically-constrained Minimum-norm Estimates: an Auditory Attention Example
08:45

Mapping Cortical Dynamics Using Simultaneous MEG/EEG and Anatomically-constrained Minimum-norm Estimates: an Auditory Attention Example

Published on: October 24, 2012

Multiple current dipole estimation in a realistic head model using R-MUSIC.

B Katyal1, P H Schimpf

  • 1Sch. of Electr. Eng. & Comput. Sci., Washington State Univ., Spokane, WA, USA.

Conference Proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual Conference
|February 3, 2007
PubMed
Summary

The Recursive MUSIC algorithm accurately localized independent neural sources even with low signal-to-noise ratios. However, performance degraded for synchronous sources below 20 dB, highlighting the need for improved source separation methods.

More Related Videos

A Novel Experimental and Analytical Approach to the Multimodal Neural Decoding of Intent During Social Interaction in Freely-behaving Human Infants
11:14

A Novel Experimental and Analytical Approach to the Multimodal Neural Decoding of Intent During Social Interaction in Freely-behaving Human Infants

Published on: October 4, 2015

Electromagnetic Source Imaging in Presurgical Evaluation of Children with Drug-Resistant Epilepsy
09:57

Electromagnetic Source Imaging in Presurgical Evaluation of Children with Drug-Resistant Epilepsy

Published on: September 20, 2024

Related Experiment Videos

Last Updated: Jul 17, 2026

Mapping Cortical Dynamics Using Simultaneous MEG/EEG and Anatomically-constrained Minimum-norm Estimates: an Auditory Attention Example
08:45

Mapping Cortical Dynamics Using Simultaneous MEG/EEG and Anatomically-constrained Minimum-norm Estimates: an Auditory Attention Example

Published on: October 24, 2012

A Novel Experimental and Analytical Approach to the Multimodal Neural Decoding of Intent During Social Interaction in Freely-behaving Human Infants
11:14

A Novel Experimental and Analytical Approach to the Multimodal Neural Decoding of Intent During Social Interaction in Freely-behaving Human Infants

Published on: October 4, 2015

Electromagnetic Source Imaging in Presurgical Evaluation of Children with Drug-Resistant Epilepsy
09:57

Electromagnetic Source Imaging in Presurgical Evaluation of Children with Drug-Resistant Epilepsy

Published on: September 20, 2024

Area of Science:

  • Neuroscience
  • Biophysics
  • Computational Biology

Background:

  • Neural activity is modeled as current dipoles in a volume conductor.
  • Solving the inverse electrostatic problem is crucial for understanding neuronal sources.
  • Spatio-temporal analysis offers advantages over purely spatial methods.

Purpose of the Study:

  • To evaluate the Recursive MUSIC algorithm for localizing neuronal sources.
  • To analyze algorithm performance with synchronous and asynchronous dipolar sources.
  • To assess performance across a range of signal-to-noise ratios (0-30 dB).

Main Methods:

  • Utilized the Recursive MUSIC algorithm.
  • Modeled neural activity using combinations of synchronous and asynchronous dipolar sources.
  • Employed an anatomically realistic head model for simulations.

Main Results:

  • Excellent localization of independent sources was achieved, even at low signal-to-noise ratios.
  • Performance for synchronous sources significantly degraded below 20 dB signal-to-noise ratio.
  • Spatio-temporal analysis demonstrated superior performance compared to purely spatial approaches.

Conclusions:

  • The Recursive MUSIC algorithm shows promise for localizing independent neural sources.
  • Distinguishing between synchronous and asynchronous sources remains a challenge.
  • Further development is needed for robust source separation in complex neural activity.