期刊
NEUROIMAGE
卷 204, 期 -, 页码 -出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.neuroimage.2019.116223
关键词
fMRI; Replication; Group activations; Jaccard index; Intra class correlation
资金
- Stiftung Rheinland-Pfalz fur Innovation [MARP program] [961-386261/1080]
- Ministry of Science of the state of Rhineland-Palatinate [DRZ program]
- European Union's Horizon 2020 research and innovation programme [777084]
- H2020 Societal Challenges Programme [777084] Funding Source: H2020 Societal Challenges Programme
Motivated by the recent replicability crisis we tested replicability of functional magnetic resonance imaging (fMRI) group activations in two independent samples. An identical behavioral and fMRI test battery for the longitudinal investigation of stress resilience mechanisms was developed for the Mainz Resilience Project (MARP) and conducted in a discovery (N = 54) and a replication sample (N = 103). The test battery consisted of a stress reactivity task, a reward sensitivity task, a fear conditioning and extinction paradigm, two volitional reappraisal tasks and an emotional interference inhibition task. Replicability of group activations was tested with the Jaccard index and the Intra Class Correlation (ICC). Overall, we observed good to excellent replicability of activations at the whole brain level. Only a minority of contrasts showed unsatisfactory replicability. Replicability at the level of individual regions of interest (ROIs) was generally lower. Tasks with stronger activation in the discovery sample showed better replicability.
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