کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6039381 1188819 2008 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Mode level cognitive subtraction (MLCS) quantifies spatiotemporal reorganization in large-scale brain topographies
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی علوم اعصاب شناختی
پیش نمایش صفحه اول مقاله
Mode level cognitive subtraction (MLCS) quantifies spatiotemporal reorganization in large-scale brain topographies
چکیده انگلیسی
Contemporary brain theories of cognitive function posit spatial, temporal and spatiotemporal reorganization as mechanisms for neural information processing. Corresponding brain imaging results underwrite this perspective of large-scale reorganization. As we show here, a suitable choice of experimental control tasks allows the disambiguation of the spatial and temporal components of reorganization to a quantifiable degree of certainty. When using electro- or magnetoencephalography (EEG or MEG), our approach relies on the identification of lower dimensional spaces obtained from the high dimensional data of suitably chosen control task conditions. Encephalographic data from task conditions are reconstructed within these control spaces. We show that the residual signal (part of the task signal not captured by the control spaces) allows the quantification of the degree of spatial reorganization, such as recruitment of additional brain networks.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: NeuroImage - Volume 42, Issue 2, 15 August 2008, Pages 663-674
نویسندگان
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