In an eyebrow-raising new paper, neuroscientists report that they had participants wear a ball gag while watching images of people in pain. The lucky participants in this neuro-bondage were all female BDSM submissives, and their brain activity in response to the painful pictures was recorded with EEG.

Here’s the article: Embodiment and Humiliation Moderation of Neural Responses to Others’ Suffering in Female Submissive BDSM Practitioners

And here’s some of the stimuli (I assume they we