Time frequency analysis and spatial filtering in the evaluation of beta ERS after finger movement

A. M. Bianchi, G. Foffani, S. Cerutti, C. Babiloni, P. M. Rossini, F. Carducci, F. Babiloni, F. Cincotti

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Different methods are compared for the evaluation of the event related synchronization (ERS) in the beta rhythm corresponding to finger movements. In addition to the standard procedure usually employed, the realistic Surface Laplacian (SL) is here introduced to improve the spatial localization of the phenomenon, while a Wavelet Packet (WP) decomposition approach is intended to better defect the time dependent characteristics. The parameters of interest (ERS amplitude and latency) were statistically analyzed through Analysis of Variance (ANOVA) and Scheffe's test. The WP filtering results are well comparable with the traditional filtering procedure. On the other hand, the realistic SL considerably improves the spatial localization and the consistency of the estimation (decreased variance) of the ERS amplitude.

Original languageEnglish
Title of host publicationAnnual Reports of the Research Reactor Institute, Kyoto University
Pages990-993
Number of pages4
Volume1
Publication statusPublished - 2001
Event23rd Annual International Conference of the IEEE Engineering in Medicine and Biology Society - Istanbul, Turkey
Duration: Oct 25 2001Oct 28 2001

Other

Other23rd Annual International Conference of the IEEE Engineering in Medicine and Biology Society
CountryTurkey
CityIstanbul
Period10/25/0110/28/01

Keywords

  • Event related desynchronization/synchronization
  • Surface Laplacian
  • Wavelet packets

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Mechanical Engineering

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