The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 06, 2009
Filed:
Dec. 22, 2005
Hanna E. Viertiö-oja, Espoo, FI;
Timothy Sampson, Helsinki, FI;
Hanna E. Viertiö-Oja, Espoo, FI;
Timothy Sampson, Helsinki, FI;
General Electric Company, Schenectady, NY (US);
Abstract
The invention relates to a method for positioning electrodes in an electrode array comprising a plurality of electrodes for central nervous system (CNS) monitoring from the forehead of a subject. In order to enable efficient detection of eye movement artifacts with a minimum number of electrodes, first and second electrodes are positioned so that eye movement in one of the horizontal or vertical directions causes a negligible overall voltage change between the first and second electrodes and at least a third electrode is positioned so that eye movement in the other of said horizontal and vertical directions causes a high potential difference between the third electrode and an auxiliary electrode, wherein the auxiliary electrode is one of the electrodes in a set comprising one of the first and second electrodes and a fourth electrode. The first and second electrodes are arranged to record an EEG signal and the third electrode and the auxiliary electrode are arranged to record an EOG signal indicative of eye movements of the subject.