Extension of Quantifiable Modification of sLORETA for Induced Oscillatory Changes in Magnetoencephalography
Takehiro Uda*, 1, Naohiro Tsuyuguchi 1, Eiichi Okumura 2, Yoshihito Shigihara 3, Takashi Nagata 1, Yuzo Terakawa 1, Shinichi Sakamoto 4, Kenji Ohata 1
Identifiers and Pagination:Year: 2012
First Page: 37
Last Page: 43
Publisher Id: TONIJ-6-37
Article History:Received Date: 27/10/2011
Revision Received Date: 14/3/2012
Acceptance Date: 20/3/2012
Electronic publication date: 15/6/2012
Collection year: 2012
open-access license: This is an open access article licensed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/), which permits unrestricted, non-commercial use, distribution and reproduction in any medium, provided the work is properly cited.
Quantifiable modification of standardized low-resolution brain electromagnetic tomography (sLORETA-qm), which is one of the non-adaptive beamformer spatial filtering techniques, has been applied to source localization and quantification of evoked field or oscillatory changes in magnetoencephalography (MEG). Here, we extended this technique to induced oscillatory brain activity changes, so-called event-related desynchronization or event-related synchronization. For localizing of significantly activated brain areas at the whole-brain level, permutation tests and multiple comparison corrections with false discovery rate were applied. Induced β- and γ-band oscillatory changes by right hand clenching task were demonstrated as an example of simple induced brain activity.