studyforrest-data-multires3t

This dataset consists of empirical 3T fMRI data recorded at three spatial resolutions (1.4 mm, 2 mm, and 3 mm isotropic voxel size) for orientation decoding in visual cortex — in order to test hypotheses on the strength and spatial scale of orientation discriminating signals. This is an extension of the studyforrest project. All seven participants previously volunteered for the audio-only and the audio-visual Forrest Gump study. Five of the seven participants also participated in a matching study using identical protocols, but 7T data acquisition (with the same the three spatial resolutions used here, plus a 0.8 mm acquisition). The dataset is compliant with the BIDS data description standard (http://bids.neuroimaging.io). It is an Extension of a matching fMRI dataset (Sengupta, et al., 2017; OpenFMRI ds000113c) on participants performing a central fixation task while being stimulated with oriented visual gratings. This dataset extends the previous one with acquisitions for 3 matching spatial resolutions (1.4, 2.0, and 3.0 mm) at 3T (complementing the previous 7T acquisitions at 0.8, 1.4, 2.0, and 3.0 mm). Five of the total of seven participants are identical in both datasets. All participants are part of the studyforrest.org project.