A wavelet tool to discriminate imagery versus actual finger movements towards a brain-computer interface

Maria L. Stavrinou, Liviu Moraru, Polyxeni Pelekouda, Vasileios Kokkinos, Anastasios Bezerianos

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

Abstract

The present work explores the spatiotemporal aspects of the eventrelated desynchronization (ERD) and synchronization (ERS) during rhythmic finger tapping execution and imagery task. High resolution event related brain potentials were recorded to capture the brain activation underlying the motor execution and motor imagery. ERS and ERD were studied using a complex morlet wavelet decomposition of EEG responses. The results show similar patterns of beta ERD/ERS after the stimulus onset, for both the actual and imagery finger tapping task. This approach and results can be regarded as indicative evidences of a new strategy for recognizing imagined movements in EEG-based brain computer interface research. The long-term objective of this study is to create a multiposition brain controlled switch that is activated by signals that are measured directly from a human's brain.

Original languageEnglish (US)
Title of host publicationBiological and Medical Data Analysis - 7th International Symposium, ISBMDA 2006, Proceedings
Pages323-333
Number of pages11
StatePublished - Dec 1 2006
Event7th International Symposium on Biological and Medical Data Analysis, ISBMDA 2006 - Thessaloniki, Greece
Duration: Dec 7 2006Dec 8 2006

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume4345 LNBI
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349

Other

Other7th International Symposium on Biological and Medical Data Analysis, ISBMDA 2006
CountryGreece
CityThessaloniki
Period12/7/0612/8/06

Keywords

  • Beta rhythm
  • Brain-computer interface
  • EEG
  • Event related synchronization (ERS) -desynchronization (ERD)
  • Finger-tapping
  • Imagery
  • Wavelet

ASJC Scopus subject areas

  • Theoretical Computer Science
  • Computer Science(all)

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