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Capacitively coupled electrode system with variable capacitance for sensing potentials at the surface of tissue

  • US 20030036691A1
  • Filed: 10/07/2002
  • Published: 02/20/2003
  • Est. Priority Date: 08/10/2000
  • Status: Abandoned Application
First Claim
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1. An electrical activity sensor comprising:

  • an electrode configured to be capacitively coupled to a test item;

    a variable capacitance coupled to the electrode; and

    wherein the capacitively coupled electrode and the variable capacitance cooperate to mitigate a need for conductively coupling an electrode to the test item.

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