Method and apparatus for location finding of electrodes placed onto the body, particularly to the head
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United States of America Patent
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Feb 26, 1991
Grant Date -
N/A
app pub date -
Aug 30, 1989
filing date -
Sep 12, 1988
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method and apparatus for finding the location of electrodes attached to a body, particularly to the head is provided with at least one first coil arranged in conjunction with each electrode. The coils of the electrodes form a coil group to be localized. A plurality of other coils are arranged in the vicinity of the electrodes so that the position of the coils is uniquely known. The second set of coils forms a fixed coil group. A magnetic field is induced in at least a part of either the first coil group or the second coil group. The set of coils not generating the magnetic field are used for detecting the induced magnetic field. The measured results from the group of coils acting as a magnetometer are used to determine the position of electrodes. Using this implementation, the positions of the electrodes can be determined in a quick and accurate manner.
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