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Cited by 253

The DOI matches its Crossref record; 11 of the 11 references it cites were found in a registry or an index.

A Sliding Time-Window ICA Reveals Spatial Variability of the Default Mode Network in Time

Kiviniemi, Vesa, Vire, Tapani, Remes, Jukka, Elseoud, Ahmed Abou, Starck, Tuomo, Tervonen, Osmo, Nikkinen, Juha·2011·Brain Connectivity

Abstract

Recent evidence on resting-state networks in functional (connectivity) magnetic resonance imaging (fcMRI) suggests that there may be significant spatial variability of activity foci over time. This study used a sliding time window approach with the spatial domain-independent component analysis (SliTICA) to detect spatial maps of resting-state networks over time. The study hypothesis was that the spatial distribution of a functionally connected network would present marked variability over time. The spatial stability of successive sliding-window maps of the default mode network (DMN) from fcMRI data of 12 participants imaged in the resting state was analyzed. Control measures support previous findings on the stability of independent component analysis in measuring sliding-window sources accurately. The spatial similarity of successive DMN maps varied over time at low frequencies and presented a 1/f power spectral pattern. SliTICA maps show marked temporal variation within the DMN; a single voxel was detected inside a group DMN map in maximally 82% of time windows. Mapping of incidental connectivity reveals centrifugally increasing connectivity to the brain cortex outside the DMN core areas. In conclusion, SliTICA shows marked spatial variance of DMN activity in time, which may offer a more comprehensive measurement of the overall functional activity of a network.

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Crossref · 10.1089/brain.2011.0036

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Metadata

Authors
Kiviniemi, V., Vire, T., Remes, J., Elseoud, A. A., Starck, T., Tervonen, O., & Nikkinen, J.
Venue
Brain Connectivity
Published
2011-10
Volume
1
Issue
4
Pages
339-347
ISSN
  • 2158-0014 (ISSN-L)
  • 2158-0022
OpenAlex
W2049748820
Cited by
253
References
11
FWCI
6.93
Type
journal article
Language
en
Open access
closed

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