fMRI measurements of visual imagery and perception of different categories.

The data were collected while participants performed a retro-cue working memory type of task. Instead of focusing on the identity of the cued image, they were instructed to rate their experienced imagery vividness on a scale from 1 to 4. The stimuli that were used were letters ('D' and 'I'), fruit (apple and banana) and faces (Barack Obama and Emma Watson). This collection contains betas in MNI space per participant for: 1) each category separately ('BetasCond') and 2) for each trial separately ('BetasTrial')