1985
DOI: 10.1109/tmag.1985.1063887
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Multipole analysis of biomagnetic signals from the human leg

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Cited by 3 publications
(5 citation statements)
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“…The electrical detection of these types of injury currents is complicated by the difficulties associated with obtaining high-quality direct-coupled electrode recordings, especially because of the potentially large and fluctuating junction potentials at the electrode-tissue interface. Magnetic recording of these electrical activities overcomes many of these difficulties, and for this reason, injury currents in the brain and heart have been studied magnetically (2,18,(25)(26)(27) as well as injury currents from peripheral nerves and muscles (28)(29)(30)(31)(32)(33)40).…”
Section: Discussionmentioning
confidence: 99%
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“…The electrical detection of these types of injury currents is complicated by the difficulties associated with obtaining high-quality direct-coupled electrode recordings, especially because of the potentially large and fluctuating junction potentials at the electrode-tissue interface. Magnetic recording of these electrical activities overcomes many of these difficulties, and for this reason, injury currents in the brain and heart have been studied magnetically (2,18,(25)(26)(27) as well as injury currents from peripheral nerves and muscles (28)(29)(30)(31)(32)(33)40).…”
Section: Discussionmentioning
confidence: 99%
“…SQUID magnetometers have been utilized to measure the injury currents associated with spreading depression due to migraine in humans, in acute myocardial ischemia in rabbit hearts, and in humans with left bundle branch block (2,(25)(26)(27). In addition to these applications, SQUIDs are able to measure injury currents in peripheral nerve and muscle (28)(29)(30)(31)(32)(33) and also from bean plants (34). To date, no measurements of the DC injury currents associated with ischemia of the gastrointestinal tract have been reported, but the syncytial nature of intestinal smooth muscle suggests that these currents should be present.…”
mentioning
confidence: 99%
“…Implanted currents of similar strength have been used with some success to stimulate healing in fractures [6] and hence the mapping of the naturally occurring biomagnetic currents is of some interest medically. A study of these fields has been carried out by Grimes et al [7] in which the vertical component of the magnetic field (B,) was sampled in a plane above the leg (the xy plane) as shown in figure 1. The leg lies parallel to they axis and the data consist of a series of scans in the x direction, at a constant height, across successive segments of the leg as shown in figure 2.…”
Section: A Non-mathematical Outline Of Our Approachmentioning
confidence: 99%
“…A previous analysis of this data was based on a multipole expansion [7] where it was found that a satisfactory fit to each scan could be obtained by using only the dipole term of the expansion. Since the measurements in each scan are dominated by the current Figure 2.…”
Section: A Non-mathematical Outline Of Our Approachmentioning
confidence: 99%
“…Furthermore, SQUIDs have been utilized to detect injury currents in peripheral nerve and muscle and in bean plants [8,[10][11][12]15]. Our research group has already measured injury currents in ischemic intestinal smooth muscle using a SQUID magnetometer [2,21,23].…”
Section: Introductionmentioning
confidence: 99%