Measurement of EEG reactivity
US8064993B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 14, 2005 |
| Grant date | Nov 22, 2011 |
| Priority date | — |
| Expiry date | Feb 7, 2030 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/377
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The invention relates to a method and apparatus for assessing the reactivity observable in a certain physiological signal, especially the EEG signal, of a comatose subject. In order to obtain an objective and a reliable measure of the reactivity automatically and without the presence of a trained EEG specialist, a time reference corresponding to a stimulus is detected and the physiological signal data obtained from the subject is aligned with the time reference. Two sets of values are determined for a measure indicative of the amount of irregularity in the physiological signal data, both sets including at least one value of the said measure and having defined positions with respect to the time reference in time domain. Based on the two sets, the apparatus determines whether reactivity is present in the physiological signal data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.