2015
Sensitivity of PPI analysis to differences in noise reduction strategies
BARTOŇ, Marek; Radek MAREČEK; Ivan REKTOR; Pavel FILIP; Eva JANOUŠOVÁ et al.Základní údaje
Originální název
Sensitivity of PPI analysis to differences in noise reduction strategies
Autoři
Vydání
Journal of Neuroscience Methods, Amsterdam, Elsevier Science Ltd, 2015, 0165-0270
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
30000 3. Medical and Health Sciences
Stát vydavatele
Nizozemské království
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 2.053
Označené pro přenos do RIV
Ano
Kód RIV
RIV/00216224:14740/15:00080949
Organizační jednotka
Středoevropský technologický institut
UT WoS
EID Scopus
Klíčová slova anglicky
BOLD; Filtering; FMRI; Noise; Psychophysiological interactions; RETROICOR
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 8. 12. 2015 18:43, Martina Prášilová
Anotace
V originále
Background In some fields of fMRI data analysis, using correct methods for dealing with noise is crucial for achieving meaningful results. This paper provides a quantitative assessment of the effects of different preprocessing and noise filtering strategies on psychophysiological interactions (PPI) methods for analyzing fMRI data where noise management has not yet been established. Methods Both real and simulated fMRI data were used to assess these effects. Four regions of interest (ROIs) were chosen for the PPI analysis on the basis of their engagement during two tasks. PPI analysis was performed for 32 different preprocessing and analysis settings, which included data filtering with RETROICOR or no such filtering; different filtering of the ROI “seed” signal with a nuisance data-driven time series; and the involvement of these data-driven time series in the subsequent PPI GLM analysis. The extent of the statistically significant results was quantified at the group level using simple descriptive statistics. Simulated data were generated to assess statistical improvement of different filtering strategies. Results We observed that different approaches for dealing with noise in PPI analysis yield differing results in real data. In simulated data, we found RETROICOR, seed signal filtering and the addition of data-driven covariates to the PPI design matrix significantly improves results. Conclusions We recommend the use of RETROICOR, and data-driven filtering of the whole data, or alternatively, seed signal filtering with data-driven signals and the addition of data-driven covariates to the PPI design matrix.
Návaznosti
| ED1.1.00/02.0068, projekt VaV |
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| GA14-33143S, projekt VaV |
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