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Bo Bernhardsson

Modellering och styrning av osäkra system. Programdirektör för masterprogrammet i maskininlärning, system och styrning.

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A Novel Multitaper Reassignment Method for Estimation of Phase Synchrony

Författare

  • Maria Sandsten
  • Rachele Anderson
  • Isabella Reinhold
  • Bo Bernhardsson
  • Carolina Bergeling
  • Mikael Johansson

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

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