Test-retest reliability of an fMRI paradigm for studies of cardiovascular reactivity

Lei K. Sheu, J. Richard Jennings, Peter J. Gianaros
2012 Psychophysiology  
We examined the reliability of measures of fMRI, subjective, and cardiovascular reactions to standardized versions of a Stroop color-word task and a multi-source interference task. A sample of 14 men and 12 women (30-49 years old) completed the tasks on two occasions, separated by a median of 88 days. The reliability of fMRI BOLD signal changes in brain areas engaged by the tasks was moderate, and aggregating fMRI BOLD signal changes across the tasks improved testretest reliability metrics.
more » ... e metrics included voxel-wise intraclass correlation coefficients (ICCs) and overlap ratio statistics. Task-aggregated ratings of subjective arousal, valence, and control, as well as cardiovascular reactions evoked by the tasks showed ICCs of 0.57 to 0.87 (ps < 0.001), indicating moderate-to-strong reliability. These findings support using these tasks as a battery for fMRI studies of cardiovascular reactivity.
doi:10.1111/j.1469-8986.2012.01382.x pmid:22594784 pmcid:PMC3376244 fatcat:o2r54nenrff37dk7inuevwwbxq