Odor and Visual Similarity MRI Experiment

This dataset contains multi-echo fMRI data from an odor and visual similarity experiment. Each participant underwent anatomical T1-weighted imaging and three functional runs: 1. odor run 1 2. visual run 1 3. odor run 2 Functional images were acquired as multi-echo BOLD scans with four echoes per run. Therefore, each complete subject has 12 BOLD files: 3 runs × 4 echoes. Validator note: The BIDS validator reports an INCONSISTENT_PARAMETERS warning because the functional data were acquired using a multi-echo BOLD sequence. Each functional run contains four echoes, represented with the echo-1, echo-2, echo-3, and echo-4 entities in the filenames. The expected EchoTime values differ across echoes, while RepetitionTime and task structure are consistent across runs.