Capacitively coupled electrode system with variable capacitance for sensing potentials at the surface of tissue
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United States of America Patent
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Issued Date -
Feb 20, 2003
app pub date -
Oct 7, 2002
filing date -
Aug 10, 2000
priority date (Note) -
Abandoned
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Abstract
An electrical activity sensor for sensing and reproducing electrical potentials at the surface of a test item such as a human being has an electrode configured to be capacitively coupled to the test item and a variable capacitance coupled to the electrode. The capacitively coupled electrode and the variable capacitance cooperate to mitigate a need for conductively coupling the electrode to the test subject.
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