PMID: 11345099May 10, 2001Paper

Longitudinal variations of characteristic frequencies of skeletal muscle fibre potentials detected by a bipolar electrode or multi-electrode

Journal of Medical Engineering & Technology
N A DimitrovaA Nikitin

Abstract

We aimed to reveal reasons for longitudinal variations of characteristic frequencies of electromyographic signals detected by surface longitudinal multi-electrodes. Since the terminal phases were reduced in bipolar recordings, we tested whether the frequency variations reflected the effects of the excitation origin and extinction as in monopolar recordings. A precise and fast convolution method to calculate the signals detected by a multi electrode was suggested. The contribution of different electrode poles was introduced in the impulse response. When a longitudinal multi-electrode with an even number of poles was positioned above the end-plate of asymmetrical fibres, the signal mainly reflected the processes of the excitation extinction This increased the signal mean and median frequencies Although the effects of origin and extinction of the excitation were significantly reduced in the spatially filtered signals, the frequency variations along the fibre reflected these intrinsic features of any skeletal muscle fibre of finite length.

References

Nov 1, 1990·Medical & Biological Engineering & Computing·Z C LatevaN A Dimitrova
Feb 1, 1987·IEEE Transactions on Bio-medical Engineering·H ReucherG Rau
Jul 1, 1997·IEEE Transactions on Bio-medical Engineering·C Disselhorst-KlugG Rau
Jan 1, 1992·Journal of Electromyography and Kinesiology : Official Journal of the International Society of Electrophysiological Kinesiology·D F Stegeman, W H Linssen

❮ Previous
Next ❯

Citations

Oct 31, 2013·Medical & Biological Engineering & Computing·Javier Rodriguez-Falces, Nicolas Place
May 22, 2001·Medical & Biological Engineering & Computing·N A DimitrovaA G Dimitrov
Dec 8, 2011·Brazilian Oral Research·Murillo Sucena PitaPaulo Renato Junqueira Zuim
Jan 25, 2005·Journal of Electromyography and Kinesiology : Official Journal of the International Society of Electrophysiological Kinesiology·T I ArabadzhievN A Dimitrova
Sep 12, 2006·Journal of Electromyography and Kinesiology : Official Journal of the International Society of Electrophysiological Kinesiology·G V DimitrovN A Dimitrova

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.

Related Papers

Journal of Electromyography and Kinesiology : Official Journal of the International Society of Electrophysiological Kinesiology
G V DimitrovGünter Rau
Medical Engineering & Physics
N A DimitrovaV N Chikhman
Journal of Electromyography and Kinesiology : Official Journal of the International Society of Electrophysiological Kinesiology
N A DimitrovaO A Nikitin
© 2021 Meta ULC. All rights reserved