Method and apparatus for deriving a mental state of a subject
US11076788B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 23, 2015 |
| Grant date | Aug 3, 2021 |
| Priority date | — |
| Expiry date | Jul 20, 2036 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2021/005
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method (1500) for deriving a mental state of a subject is disclosed. The method comprises receiving (1502) a bio-signal from the subject; calculating respective statistical variations of at least two physiological parameters derived from the bio-signal; determining (1504) an arousal level of the subject based on the calculated statistical variations of the at least two physiological parameters; deriving a time-domain heart rate variability signal from the bio-signal for calculating at least two heart rate variability parameters; determining (1506) a valence level of the subject based on the at least two heart rate variability parameters; and deriving (1508) the mental state from the arousal level and valence level. A related apparatus is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.