This dataset contains preprocessed fMRI brain responses from human participants solving deductive reasoning problems during neuroimaging, with per-subject response matrices of beta values extracted via GLMSingle from relevant brain regions (top 10% most responsive voxels within ROIs). It also includes generated reasoning datasets for deductive and propositional reasoning tasks, along with HCP fMRI data for cross-dataset validation. The data supports the development and evaluation of brain-guided language models for robust reasoning.