We demonstrate a differential neural response to washer-relevant disgust in washers and checkers: only washers demonstrate a neural response to washer-relevant disgust associated with emotion perception rather than attention to non-emotive visual detail.
Results showed differences between OCD and non-OCD images and their change after successful treatment, and confirmed clinical suggestions that cancelling images reduced OCD discomfort. The method's success paves the way for further studies of mental imagery in OCD: for instance, during fMRI.
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