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:
Dec. 07, 2010
Filed:
May. 22, 2006
Pekka Meriläinen, Helsinki, FI;
Markku Paloheimo, Espoo, FI;
Juha Virtanen, Helsinki, FI;
Hanna Viertiö-oja, Espoo, FI;
Petteri Lapinlampi, Espoo, FI;
Pekka Meriläinen, Helsinki, FI;
Markku Paloheimo, Espoo, FI;
Juha Virtanen, Helsinki, FI;
Hanna Viertiö-Oja, Espoo, FI;
Petteri Lapinlampi, Espoo, FI;
General Electric Company, Schenectady, NY (US);
Abstract
The invention relates to a mechanism for determining the depth of sleep of a subject. In order to obtain information about the continuum of the depth of sleep in a user-friendly way without a need for high computational power, EEG signal data is obtained from a subject, REM sleep periods of the subject are detected, and a measure indicative of irregularity in the EEG signal data is derived. Based on the measure and the depicted REM sleep periods, a sleep depth index and state information are produced, where the index is indicative of the depth of sleep of the subject and the state information indicates whether or not the EEG signal data is obtained during a REM sleep period. The detection of the REM periods may be based on a bioimpedance measured from EEG electrodes simultaneously with the EEG measurement or on EOG signal data measured from the subject.