MDD Belief-Updating fMRI (Ultimatum Game)

This Science Data Bank record belongs to a study from the Institute of Psychology, Chinese Academy of Sciences, on why people with major depressive disorder (MDD) are slow to revise negative beliefs. Participants played an ultimatum game in the scanner, and the authors combined task fMRI with reinforcement learning models and dynamic causal modeling of a network spanning the insula, the anterior and middle cingulate cortex and sensory regions. The record was deposited by Yuening Jin and Yuan Zhou and published on 30 April 2026.

Composition

The record description reports 69 patients with MDD who were not taking medication and 62 healthy controls, 131 people in total. The study also used depression and anxiety severity scores for clinical correlations. The deposit is a single file of about 1.19 GB. Its contents are not described, so it is not known whether it holds raw images, preprocessed images, derived connectivity estimates or behavioral data. Age, sex and diagnostic criteria are not given on the record.

Acquisition

The record names task-based fMRI during an ultimatum game. Scanner, field strength, sequence parameters, structural scans and file format are not stated.

Known limitations

No study paper or data descriptor is linked from the record, so the cohort is documented only by its abstract-style description. Access is restricted: applicants state their name, institution and purpose, and the depositor decides alone whether to share. No license or terms of use are published. Because the file contents are undocumented, the subject counts describe the study, not necessarily what the file contains. Demographics and acquisition details are missing.