BOLD5000

Dataset Overview

Dataset Name

BOLD5000: Brains, Objects, Landscapes Dataset

Participant Information

• Four participants: CSI1, CSI2, CSI3, & CSI4
• Functional task acquisition sessions: total of 15 sessions (#1-15)
• Anatomical data acquisition session: #16

Data Content

• Functional session data:
  • Three sets of field maps (EPI opposite phase encoding; spin‑echo opposite phase encoding pairs, including partial and non‑partial Fourier)
  • 9 or 10 functional scans covering 5,000 scene data (5000scenes)
  • 1 or 0 functional localizer scans for defining scene‑selective regions (localizer)
  • Each event.json file lists each stimulus, stimulus onset time, and participant response (participants performed a simple affective task)
• Anatomical data:
  • T1‑weighted MPRAGE scans
  • T2‑weighted SPACE scans
  • Diffusion spectrum imaging

Data Processing

• Preprocessing: All functional data were preprocessed using fMRIprep, including motion correction, susceptibility distortion correction, and alignment to anatomical data.
• Derived data directory contents:
  • fMRIprep: preprocessed data and reports
  • Freesurfer: reconstruction results after fMRIprep preprocessing
  • MRIQC: image quality metrics (IQM) obtained using MRIQC
  • spm: directory containing masks used to define regions of interest (ROI) for each participant

Special Notes

• All MRI and fMRI data are provided after Siemens pre‑scan normalization filter processing.
• CSI4 participated in only 10 MRI sessions; sessions 1‑9 were functional acquisition sessions, and session 10 was an anatomical data acquisition session.