Bo Bernhardsson
Modellering och styrning av osäkra system. Programdirektör för masterprogrammet i maskininlärning, system och styrning.
A Novel Multitaper Reassignment Method for Estimation of Phase Synchrony
Författare
Summary, in English
The matched phase reassignment, developed to estimate phase synchrony of transient oscillatory signals, is extended into a multitaper phase reassignment (MTPR) method. The method gives perfect time-frequency localization for two transients with zero phase difference and estimates of time locations and oscillatory frequencies in low signal-to-noise ratios. For different signal-to-noise ratios between channels a suggestion of corrected reassignment vector expressions is given, resulting in minimized variance. The MTPR outperforms the matched phase reassignment as well as state-of-the-art methods, such as Pearson's linear correlation, time-frequency cross-spectrogram phase estimation and the Phase Lag Index method. An example of estimated phase differences, time locations and oscillatory frequencies of electrical signals measured from the brain is also shown.
Avdelning/ar
- eSSENCE: The e-Science Collaboration
- Matematisk statistik
- Institutionen för reglerteknik
Publiceringsår
2021
Språk
Engelska
Sidor
2164-2168
Publikation/Tidskrift/Serie
European Signal Processing Conference
Volym
2021-August
Länkar
Dokumenttyp
Konferensbidrag
Förlag
European Signal Processing Conference, EUSIPCO
Ämne
- Control Engineering
Nyckelord
- EEG
- Multitapers
- Oscillatory transient signals
- Phase synchronization
- Time-frequency reassignment
Conference name
29th European Signal Processing Conference, EUSIPCO 2021
Conference date
2021-08-23 - 2021-08-27
Conference place
Dublin, Ireland
Status
Published
Projekt
- eSSENCE@LU 8:4 - Diving deeper than ever into dolphin echolocation
ISBN/ISSN/Övrigt
- ISSN: 2219-5491
- ISBN: 9789082797060