Individual Brain Charting dataset extension, third release for movie watching and retinotopy data

Area of Science:

• Neuroscience
• Cognitive Science
• Neuroimaging

Background:

• The Individual Brain Charting (IBC) dataset provides high-resolution functional Magnetic Resonance Imaging (fMRI) data for human brain cognitive mapping.
• It includes deep phenotyping of twelve individuals across various psychological domains, suitable for functional atlasing.

Purpose of the Study:

• To expand the IBC dataset with new task data from naturalistic stimuli and trial-based designs.
• To uncover detailed structures of brain activation and map functional networks.
• To enhance the application of the IBC dataset for cognitive brain mapping.

Main Methods:

• Inclusion of six new tasks, including four trial-based retinotopic tasks.
• Application of the Fast Shared Response Model (FastSRM) for data-driven modeling of naturalistic stimuli.
• Reconstruction of data from left-out runs using FastSRM to extract brain networks.

Main Results:

• Successful reconstruction of fMRI data from left-out runs using FastSRM.
• Extraction of functional networks within the visual, auditory, and language systems.
• Detailed topographic organization of the visual system, including retinotopy and visual field mapping to the cortex.

Conclusions:

• The expanded IBC dataset, utilizing FastSRM, provides robust data for cognitive brain mapping.
• New data enables the identification of specific brain networks and detailed visual system organization.
• The open-access nature of IBC facilitates further research in functional brain atlasing.