Comments on ‘The discrepancy between human peripheral nerve chronaxie times as measured using magnetic and electric field stimuli: the relevance to MRI gradient coil safety’

Autor:	J. Patrick Reilly
Rok vydání:	2010
Předmět:	Electromagnetic field Physics Chronaxie Radiological and Ultrasound Technology medicine.diagnostic_test Pulse (signal processing) Time constant Magnetic resonance imaging Magnetic field Nuclear magnetic resonance Electromagnetic coil Electric field medicine Radiology Nuclear Medicine and imaging
Zdroj:	Physics in Medicine and Biology. 55:L5-L8
ISSN:	1361-6560 0031-9155
Popis:	A recent electrostimulation study with human subjects (Recoskie et al 2009 Phys. Med. Biol. 54 5965-79) reported a large difference between chronaxie times when stimuli were delivered to the same body locus (the wrist) either through contact electrodes (electric stimulation) or through a pulsed magnetic field (magnetic stimulation). This paper reviews the procedures and analytic methods used in that study that might account for the reported discrepancies. Factors possibly accounting for reported discrepancies include the maximum and minimum pulse widths of the experimental stimuli; variations in experimental waveforms vis-a-vis mathematically ideal functions; differences in the spatial distribution of the in situ electric field for the two methods of delivery and differences in derived chronaxie relative to strength-duration time constants.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::0445b68b729baae0647cb4aac811c06d https://doi.org/10.1088/0031-9155/55/4/l01 Zobrazit plný text záznamu