FeedBES PPI results

Description: PPI results for the FeedBES project currently submitted for revision. All PPI analyses were conducted with FEAT (FMRI Expert Analysis Tool) Version 6.00, part of FSL (FMRIB's Software Library, www.fmrib.ox.ac.uk/fsl) (15)⁠. For 29 participants we performed four PPI analyses, one for each seed region and each contrast direction of episodic and semantic trials, i.e., PPI-V1EPISEM, PPI-V1SEMEPI, PPI-LOCEPISEM, and PPI-LOCSEMEPI. In addition to the nuisance regressors described in the main paper for the first GLM, our PPI models included three additional regressors. The first regressor (PHYS) represents the physiological signal of the corresponding seed region, the second regressor (PSYCH) codes for the respective contrast of conditions, and the third regressor (PHYS*PSYCH) is the interaction between physiological signal and the psychological condition.

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