CSD: Caption Scene Dataset
摘要
Experimental task Text image semantic matching task: In each trial, participants first read a scene text description for 3 seconds, followed by a 3-second rest period. They then viewed the corresponding scene image for 3 seconds, followed by another 3-second rest. During image presentation, participants judged whether the text description matched the scene and indicated a mismatch by pressing a button.Basic information of the datasetThis study recruited 8 healthy participants and acquired structural images (T1, T2, dMRI) as well as functional images, including visual category localizer scans (fLoc), retinotopic mapping scans (Retinotopic), resting-state scans (Resting), and the main CSD experiment (200 runs in total). In the CSD main experiment, each participant viewed 4,400 text–image pairs, comprising 4,000 matched pairs (1,000 shared stimuli + 1,000 unique stimuli, each repeated twice) and 400 unmatched pairs.Scanning parametersThe CSD main experiment was conducted using a United Imaging uMR890 3T MRI system. Functional images were acquired with the following parameters: isotropic voxel size of 2.5 mm, repetition time (TR) 2,000 ms, echo time (TE) 30 ms, field of view (FOV) 200 × 200 mm, 60 axial slices, flip angle 81°, echo spacing 0.52 ms, bandwidth 2,320 Hz, and multiband acceleration factor of 2.Raw data The raw data are stored in the /sub-xx/ directory and organized into three subfolders:anat: structural images (T1, T2); dwi: diffusion images (dMRI); func: functional images. Each folder contains the raw image files along with corresponding JSON metadata.Preprocessed time-series data The preprocessed time-series data is stored in /derivatives/ppdata/sub-xx/ and include the following components:anat: high signal-to-noise ratio T1 structural image obtained by averaging multiple scans; design: experimental design file for each CSD run, with elements represented as N or 0. Here, N indicates the stimulus index (1-indexed) and marks the onset of image presentation,