GJHBT
IJNMR
IJGONC
IJAAPR
IJCLR| Journal of Advances in Biomedical Engineering and Technology (Volume 1 Issue 1) | |
| The Fascicle Undulation Effect on the Activating Function in Magnetic Stimulation of Peripheral Nerves with Transverse and Longitudinal Fields |  |
|
Pages 15-26 Eugen R. Lontis, Karsten Nielsen and Johannes J. Struijk DOI: http://dx.doi.org/10.15379/2409-3394.2014.01.01.3 Published: 18 October 2014 |
|
| Abstract | |
| Analysis of activating function for a long, myelinated nerve fiber with undulating path in transverse and longitudinal induced electric fields was performed. The induced electric field was computed using a finite element model composed by a round coil beneath a bath with saline solution. Longitudinal and transverse components of the induced electric field were computed along two axes, one tangential and the other axial to the coil. The influence of a transverse field on the modified activating function was analyzed when the fiber path was determined by the fascicle undulation, and by the fascicle undulation plus the fiber undulation inside the fascicle. For the first path type, undulation wavelength of 40 to 90 mm and 0.8 mm amplitude determined a classic activating function with: (a) multiple virtual cathodes that could generate two or three stimulation sites for axially oriented coil, and (b) virtual cathode with distorted shape in amplitude up to 35% and location up to 67% for tangentially oriented coil. For axially oriented coil, the transverse field term of the modified activating function was comparable in amplitude with the classic activating function, however significant attenuation could occur due to perineurium. For the second path type with wavelength of tenths of millimeters and amplitudes of a quarter of the wavelength, the classic activating function had such a dramatic increase in the spatial frequency that could not predict the stimulation site with the usual interpretation of the virtual cathode. Similarity between the results obtained with the first path type and the ones obtained in a previous in-vitro experiment suggests that the undulating fascicles within the nerve trunk can be responsible for stimulation with transverse fields. | |
| Keywords | |
| Transverse field activation mechanism, Modified activating function, Fiber and fascicle undulation. | |
 |
|
G J H B T
Global Journal of Hematology and Blood Transfusion is committed to dissemination of high-quality research related to the latest trends and advances in the field of Hematology and Blood Transfusion.Read More
I J N M R
International Journal of Nuclear Medicine Research provides an authoritative setting for the publication of high quality internationally-relevant research with respect to the field of Nuclear Medicine. Nuclear Medicine is crucial to early diagnosis and treatment of diseases that threaten human lives.
Rread More
I J G O N C
International journal of Gynecology, Obstetrics and Neonatal Care is a peer reviewed medical journal provides up-to-date results of basic and clinical studies in Gynecology, Obstetrics and Neonatology. The primary mission of the journal is to promote improvement in the health.
Read More
I J A A P R
International Journal of Advanced Applied Physics Research is a refereed and highly professional journal that publishes premium theoretical and pragmatic papers in the field of Applied Physics.
Read More
I J C L R
International Journal of Cardiology and Lipidology Research is a peer reviewed medical journal which strengthen the research and educational base of Cardiology and Lipidology.We publish original research articles, reviews, case studies, conference papers and short notes related to aforementioned field.
Rread More
J A N R
Journal of Advanced Neuroscience Research is a peer reviewed scientific journal providing fascinating and unique forum for publishing original experimental and review articles.Read More
W J O R
World Journal of Oncology Research is a peer-reviewed scientific journal which strengthens the research and educational base of Oncology.Read More
J C M R U
Journal of Clinical Medicine Research Updates is an international peer reviewed journal related to latest advances in all areas of clinical medicine.Read More
I J F P T
International Journal of Food Processing Technology is a peer reviewed scientific journal providing an authoritative setting for the publication of internationally-relevant research.Read More
J T P R
Journal of Translational Proteomics Research is a scientific journal providing a scholarly forum for novel scientific research in the field of translational proteomics.Read More
Indexed In
