Title:
電気的信号のコンタミネーションを減少させるための方法および装置
Document Type and Number:
Japanese Patent JP2004507293
Kind Code:
A
Abstract:
The method of reducing contamination of electrical signals recorded in the presence of repeated interference contamination comprises obtaining an electrical signal recorded in the presence of a contaminating signal, and detecting a timing signal that occurs at a fixed time point during the electrical signal relative to the onset of the contaminating signal. The electrical signal is digitized, wherein the digitizing begins with the timing signal. A plurality of digitized electrical signals is analyzed, wherein the electrical signals are synchronized with respect to the timing signal, to obtain an estimated contaminating signal that is subtracted from the digitized electrical signal. This method can be used with electrophysiological signals, such as EEG, ECG, EMG and galvanic skin response, and for elimination of noise associated with concurrently used methods such as MRI. The method of noise reduction is applicable to recordings of other electrical signals, including audio recordings.
Inventors:
Cohen, Mark S.
Application Number:
JP2002518841A
Publication Date:
March 11, 2004
Filing Date:
August 15, 2001
Export Citation:
Assignee:
The Regents of The University of California
International Classes:
G01R33/28; A61B5/04; A61B5/0476; A61B5/055; G06F17/00; (IPC1-7): A61B5/04; A61B5/0476; A61B5/055; G01R33/28
Attorney, Agent or Firm:
Hidesaku Yamamoto
Takaaki Yasumura
Natsuki Morishita
Takaaki Yasumura
Natsuki Morishita