English
 
User Manual Privacy Policy Disclaimer Contact us
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  The quest for the best: The impact of different EPI sequences on the sensitivity of random effect fMRI group analyses

Kirilina, E., Lutti, A., Poser, B. A., Blankenburg, F., & Weiskopf, N. (2016). The quest for the best: The impact of different EPI sequences on the sensitivity of random effect fMRI group analyses. NeuroImage, 126, 49-59. doi:10.1016/j.neuroimage.2015.10.071.

Item is

Basic

show hide
Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0029-0E8F-D Version Permalink: http://hdl.handle.net/21.11116/0000-0003-9270-9
Genre: Journal Article

Files

show Files
hide Files
:
Kirilina_2015.pdf (Publisher version), 2MB
Name:
Kirilina_2015.pdf
Description:
-
Visibility:
Public
MIME-Type / Checksum:
application/pdf / [MD5]
Technical Metadata:
Copyright Date:
-
Copyright Info:
-
License:
-

Locators

show

Creators

show
hide
 Creators:
Kirilina, Evgeniya1, 2, Author              
Lutti, Antoine3, 4, Author
Poser, Benedikt A.5, Author
Blankenburg, Felix1, Author
Weiskopf, Nikolaus2, 4, Author              
Affiliations:
1Neurocomputation and Neuroimaging Unit, FU Berlin, Germany, ou_persistent22              
2Department Neurophysics (Weiskopf), MPI for Human Cognitive and Brain Sciences, Max Planck Society, Leipzig, DE, ou_2205649              
3Laboratoire de Recherche en Neuroimagerie (LREN), Centre hospitalier universitaire vaudois, Lausanne, Switzerland, ou_persistent22              
4Wellcome Trust Centre for Neuroimaging, University College London, United Kingdom, ou_persistent22              
5Maastricht Brain Imaging Centre, Maastricht University, the Netherlands, ou_persistent22              

Content

show
hide
Free keywords: fMRI sensitivity; Echo planar imaging (EPI); 3D EPI; Multi-echo EPI; Inter-subject variability; Random effect analysis
 Abstract: We compared the sensitivity of standard single-shot 2D echo planar imaging (EPI) to three advanced EPI sequences, i.e., 2D multi-echo EPI, 3D high resolution EPI and 3D dual-echo fast EPI in fixed effect and random effect group level fMRI analyses at 3 T. The study focused on how well the variance reduction in fixed effect analyses achieved by advanced EPI sequences translates into increased sensitivity in the random effect group level analysis. The sensitivity was estimated in a functional MRI experiment of an emotional learning and a reward based learning task in a group of 24 volunteers. Each experiment was acquired with the four different sequences. The task-related response amplitude, contrast level and respective t-value were proxies for the functional sensitivity across the brain. All three advanced EPI methods increased the sensitivity in the fixed effect analyses, but standard single-shot 2D EPI provided a comparable performance in random effect group analysis when whole brain coverage and moderate resolution are required. In this experiment inter-subject variability determined the sensitivity of the random effect analysis for most brain regions, making the impact of EPI pulse sequence improvements less relevant or even negligible for random effect analyses. An exception concerns the optimization of EPI reducing susceptibility-related signal loss that translates into an enhanced sensitivity e.g. in the orbitofrontal cortex for multi-echo EPI. Thus, future optimization strategies may best aim at reducing inter-subject variability for higher sensitivity in standard fMRI group studies at moderate spatial resolution.

Details

show
hide
Language(s): eng - English
 Dates: 2015-03-182015-10-242015-11-112016-02-01
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1016/j.neuroimage.2015.10.071
PMID: 26515905
PMC: PMC4739510
Other: Epub 2015
 Degree: -

Event

show

Legal Case

show

Project information

show hide
Project name : Talking imaging into therapeutic domain: Self-regulation of brain systems for mental disorders / BRAINTRAIN
Grant ID : 602186
Funding program : Funding Programme 7 (FP7-HEALTH-2013-INNOVATION-1)
Funding organization : European Union (EU)
Project name : -
Grant ID : 0915/Z/10/Z
Funding program : -
Funding organization : Wellcome Trust
Project name : The Cluster of Excellence ‘Languages of Emotion’ / EXC302
Grant ID : -
Funding program : -
Funding organization : German Research Foundation (DFG)

Source 1

show
hide
Title: NeuroImage
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: -
Pages: - Volume / Issue: 126 Sequence Number: - Start / End Page: 49 - 59 Identifier: ISSN: 1053-8119
CoNE: https://pure.mpg.de/cone/journals/resource/954922650166