B Graimann1, J E Huggins, S P Levine, G Pfurtscheller. 1. Department of Medical Informatics, Institute for Biomedical Engineering, Technical University Graz, Inffeldgasse 16a/II, A-8010 Graz, Austria. graimann@dpmi.tu-graz.ac.at
Abstract
OBJECTIVES: Analysis of event-related desynchronization (ERD) and event-related synchronization (ERS) often requires the investigation of diverse frequency bands. Such analysis can be difficult, especially when using multichannel data. Therefore, an effective method for the visualization of event-related changes in oscillatory brain activity is required. METHODS: A bootstrap-based method is presented which gives time-frequency maps showing only significant changes of ERD or ERS in predetermined frequency bands. RESULTS: Examples from an electroencephalographic study and an electrocorticographic study are shown. The results demonstrate how easily reactive channels and their spatio-temporal and frequency-specific characteristics can be identified by means of this method. CONCLUSIONS: The proposed method is a simple but effective way to visualize significant ERD/ERS patterns.
OBJECTIVES: Analysis of event-related desynchronization (ERD) and event-related synchronization (ERS) often requires the investigation of diverse frequency bands. Such analysis can be difficult, especially when using multichannel data. Therefore, an effective method for the visualization of event-related changes in oscillatory brain activity is required. METHODS: A bootstrap-based method is presented which gives time-frequency maps showing only significant changes of ERD or ERS in predetermined frequency bands. RESULTS: Examples from an electroencephalographic study and an electrocorticographic study are shown. The results demonstrate how easily reactive channels and their spatio-temporal and frequency-specific characteristics can be identified by means of this method. CONCLUSIONS: The proposed method is a simple but effective way to visualize significant ERD/ERS patterns.
Authors: Daryl R Kipke; William Shain; György Buzsáki; E Fetz; Jaimie M Henderson; Jamille F Hetke; Gerwin Schalk Journal: J Neurosci Date: 2008-11-12 Impact factor: 6.167
Authors: Martin Rakusa; Ales Hribar; Blaz Koritnik; Marko Munih; Piero Paolo Battaglni; Ales Belic; Janez Zidar Journal: Neurol Sci Date: 2013-03-10 Impact factor: 3.307
Authors: Aaron S Geller; John F Burke; Michael R Sperling; Ashwini D Sharan; Brian Litt; Gordon H Baltuch; Timothy H Lucas; Michael J Kahana Journal: Clin Neurophysiol Date: 2014-02-10 Impact factor: 3.708
Authors: Rupali P Dhond; Emily Ruzich; Thomas Witzel; Yumi Maeda; Cristina Malatesta; Leslie R Morse; Joseph Audette; Matti Hämäläinen; Norman Kettner; Vitaly Napadow Journal: Brain Date: 2012-10-04 Impact factor: 13.501