Data

Imaging modalities

The IBC dataset comprise several Magnetic Resonance Imaging (MRI) modalities with special emphasis on functional MRI (fMRI). These different types of sequences are:

  • high-resolution (1.5mm) T2*-weighted images with blood-oxygen-level-dependent (BOLD) contrast, acquired during both task performance and resting state;
  • high-resolution T1- and T2-weighted images;
  • tractography;
  • relaxometry;
  • radial diffusion.

Dataset organization

Neuroimaging data

Raw data and data derivatives of the IBC dataset follow BIDS specification. Annotations of the contrasts maps derived from the task-fMRI data are labeled using the Cognitive Atlas. Documentation of the data is available here.

Meta-data

Meta-data comprehend the behavioral protocols employed during acquisition of the task-fMRI data, descriptors of such protocols (i.e. log files, event files, video annotations, etc.) as well as python packages of the analysis pipeline. These data can be found in two repositories on github:

Data releases

The second and third releases have taken place in April 2020. All the information can be found in the documentation.

The first release of the dataset has taken place in September 2017. All information can be found in the data-descriptor article Pinho et al. (2018).

Access:

Task-fMRI data

First release

The first release of the dataset comprises the following tasks:

  • the ARCHI tasks, which consist in a set of fast event-related paradigms developed at NeuroSpin and dedicated to mapping elementary cognitive systems;
  • the HCP tasks, used by the Human Connectome Project. These are a subset of seven tasks, from the original group, replicated with slightly longer sessions (i.e. more blocks per session);
  • the RSVP Language task, which pertains for the dissociation between semantic and syntactic processing in a Rapid-Serial-Visual-Presentation (RSVP) task.
Second release
  • the Mental-Time Travel tasksthat also includes conditions on mental-space navigation;
  • the Positive-Incentive Value task, shared by Mathias Pessiglione’s lab, is dedicated to localize the reward system;
  • the Theory-of-Mind tasksshared by Saxe’s lab, are a set of localizers dedicated to identify functional regions in the “theory-of-mind” and “pain matrices” networks;
  • the Visual Short-Term Memory and Enumeration tasks;
  • the Self task aims to elicit brain networks pertaining the Self-Reference Effect;
  • the Bang task concerns with watching the eight-minute-long version of the episode Bang! You’re Dead, intended to modulate the synchronized response to naturalistic stimuli for assessment of attentional control.
Third release
  • the Clips task, shared by Gallant’s lab, pertains to the visualization of naturalistic scenes for functional mapping of semantic categories across brain regions;
  • the Classic Retinotopy task;
  • the Raiders task consists in watching, chapter-by-chapter, the full movie of “Raiders of the Lost Arch”.
Fourth release
Coming up soon!!!
  • a set of localizers shared by Labex Cortex lab, which address several cognitive processes including stimulus salience, working memory, visualization of different object categories and passive listening of sounds.
  • an auditory recognition task provided by researchers at Maastricht’s University featuring several human and non-human sound types.
  • a battery of tasks on self-regulation shared by the Poldrack lab, including cognitive processes such as risk-associated decision making, motor inhibition, planning and vigilance.
Future releases
  • a biological motion localizer shared by the Chang lab, that addresses the biological motion phenomenon with several experimental conditions.

Data collection

Below, you can find a diagram with the temporal structure of the MRI sessions corresponding to the data collection up to the third release.

Diagram of the IBC MRI sessions

The final dataset will comprise 50 MRI sessions per individual.

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