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Torben Ellegaard Lund

Motion or activity: their role in intra- and inter-subject variation in fMRI

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Motion or activity: their role in intra- and inter-subject variation in fMRI. / Lund, Torben E; Nørgaard, Minna D; Rostrup, Egill; Rowe, James B; Paulson, Olaf B.

In: NeuroImage, Vol. 26, No. 3, 2005, p. 960-4.

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

Harvard

Lund, TE, Nørgaard, MD, Rostrup, E, Rowe, JB & Paulson, OB 2005, 'Motion or activity: their role in intra- and inter-subject variation in fMRI', NeuroImage, vol. 26, no. 3, pp. 960-4. https://doi.org/10.1016/j.neuroimage.2005.02.021

APA

Lund, T. E., Nørgaard, M. D., Rostrup, E., Rowe, J. B., & Paulson, O. B. (2005). Motion or activity: their role in intra- and inter-subject variation in fMRI. NeuroImage, 26(3), 960-4. https://doi.org/10.1016/j.neuroimage.2005.02.021

CBE

MLA

Vancouver

Author

Lund, Torben E ; Nørgaard, Minna D ; Rostrup, Egill ; Rowe, James B ; Paulson, Olaf B. / Motion or activity: their role in intra- and inter-subject variation in fMRI. In: NeuroImage. 2005 ; Vol. 26, No. 3. pp. 960-4.

Bibtex

@article{36a94dd0cc2e11dd9710000ea68e967b,
title = "Motion or activity: their role in intra- and inter-subject variation in fMRI",
abstract = "Functional MRI (fMRI) carries the potential for non-invasive measurements of brain activity. Typically, what are referred to as activation images are actually thresholded statistical parametric maps. These maps possess large inter-session variability. This is especially problematic when applying fMRI to pre-surgical planning because of a higher requirement for intra-subject precision. The purpose of this study was to investigate the impact of residual movement artefacts on intra-subject and inter-subject variability in the observed fMRI activation. Ten subjects were examined using three different word-generation tasks. Two of the subjects were examined 10 times on 10 different days using the same paradigms. We systematically investigated one approach of correcting for residual movement effects: the inclusion of regressors describing movement-related effects in the design matrix of a General Linear Model (GLM). The data were analysed with and without modeling the residual movement artefacts and the impact on inter-session variance was assessed using F-contrasts. Inclusion of motion parameters in the analysis significantly reduced both the intra-subject as well as the inter-subject-variance.",
author = "Lund, {Torben E} and N{\o}rgaard, {Minna D} and Egill Rostrup and Rowe, {James B} and Paulson, {Olaf B}",
year = "2005",
doi = "10.1016/j.neuroimage.2005.02.021",
language = "English",
volume = "26",
pages = "960--4",
journal = "NeuroImage",
issn = "1053-8119",
publisher = "Elsevier BV",
number = "3",

}

RIS

TY - JOUR

T1 - Motion or activity: their role in intra- and inter-subject variation in fMRI

AU - Lund, Torben E

AU - Nørgaard, Minna D

AU - Rostrup, Egill

AU - Rowe, James B

AU - Paulson, Olaf B

PY - 2005

Y1 - 2005

N2 - Functional MRI (fMRI) carries the potential for non-invasive measurements of brain activity. Typically, what are referred to as activation images are actually thresholded statistical parametric maps. These maps possess large inter-session variability. This is especially problematic when applying fMRI to pre-surgical planning because of a higher requirement for intra-subject precision. The purpose of this study was to investigate the impact of residual movement artefacts on intra-subject and inter-subject variability in the observed fMRI activation. Ten subjects were examined using three different word-generation tasks. Two of the subjects were examined 10 times on 10 different days using the same paradigms. We systematically investigated one approach of correcting for residual movement effects: the inclusion of regressors describing movement-related effects in the design matrix of a General Linear Model (GLM). The data were analysed with and without modeling the residual movement artefacts and the impact on inter-session variance was assessed using F-contrasts. Inclusion of motion parameters in the analysis significantly reduced both the intra-subject as well as the inter-subject-variance.

AB - Functional MRI (fMRI) carries the potential for non-invasive measurements of brain activity. Typically, what are referred to as activation images are actually thresholded statistical parametric maps. These maps possess large inter-session variability. This is especially problematic when applying fMRI to pre-surgical planning because of a higher requirement for intra-subject precision. The purpose of this study was to investigate the impact of residual movement artefacts on intra-subject and inter-subject variability in the observed fMRI activation. Ten subjects were examined using three different word-generation tasks. Two of the subjects were examined 10 times on 10 different days using the same paradigms. We systematically investigated one approach of correcting for residual movement effects: the inclusion of regressors describing movement-related effects in the design matrix of a General Linear Model (GLM). The data were analysed with and without modeling the residual movement artefacts and the impact on inter-session variance was assessed using F-contrasts. Inclusion of motion parameters in the analysis significantly reduced both the intra-subject as well as the inter-subject-variance.

U2 - 10.1016/j.neuroimage.2005.02.021

DO - 10.1016/j.neuroimage.2005.02.021

M3 - Journal article

C2 - 15955506

VL - 26

SP - 960

EP - 964

JO - NeuroImage

JF - NeuroImage

SN - 1053-8119

IS - 3

ER -