Abstract: |
Analog electrical and pressure data obtained by an EEG/pressure sensor matrix from the subject are sent to a signal processing module that derives digital EEG data from the electrical signal and pressure data without using sensors attached to a subject's head. The pressure data are used as a secondary signal to measure the physical orientation of the subject's head. The physical orientation is used to transform the derived EEG signal to a known coordinate axis (the orientation of the subject's head) to obtain useful, consistent, and accurate EEG data. The EEG may be used to determine a sleep state of a subject and to awaken the subject while in a particular state. |
Inventor: |
Hang, Zimin (Rockville, MD, US); Ahad, James Nolan Tin (Arcadia, CA, US); Ye, Xiaoyang (St. Louis, MO, US); Corin, Daniel Alexander (St. Louis, MO, US) |
Applicant: |
Forty Winks, LLC (St. Louis, MO, US) |
Face Assignee: |
Forty Winks, LLC (St. Louis, MO, US) |
Filed: |
2013-10-10 |
Issued: |
2014-06-17 |
Claims: |
29 |
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US8755879
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1. A system for acquiring an EEG signal suitable for use in electroencephalography from a subject, the system comprising:
(3)
(2)
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6. A method for acquiring an EEG signal suitable for use in electroencephalography from a subject, the method comprising:
(3)
(6)
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11. A system for awakening a subject, the system comprising:
(7)
(2)
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20. A method for awakening a subject, the method comprising:
(7)
(8)
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