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IEEE Trans Biomed Eng · Sep 2006
Assessing cortical functional connectivity by partial directed coherence: simulations and application to real data.
- Laura Astolfi, Febo Cincotti, Donatella Mattia, M G Marciani, Luis A Baccalà, Fabrizio de Vico Fallani, Serenella Salinari, Mauro Ursino, Melissa Zavaglia, and Fabio Babiloni.
- Dip Informatica e Sistemistica, Universita La Sapienza, Rome, Italy. laura.astolfi@uniromal.it
- IEEE Trans Biomed Eng. 2006 Sep 1; 53 (9): 1802-12.
AbstractThe aim of this paper is to test a technique called partial directed coherence (PDC) and its modification (squared PDC; sPDC) for the estimation of human cortical connectivity by means of simulation study, in which both PDC and sPDC were studied by analysis of variance. The statistical analysis performed returned that both PDC and sPDC are able to estimate correctly the imposed connectivity patterns when data exhibit a signal-to-noise ratio of at least 3 and a length of at least 27 s of nonconsecutive recordings at 250 Hz of sampling rate, equivalent, more generally, to 6750 data samples.
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