Well, this presumably takes place in the distant future, where a disembodied brain can have a spoken conversation in real-time, meaning it's already hooked up to sensory equipment and speakers it can control, at the very least. It's not a stretch to imagine the brain's containment unit could also be connected to external
manipulators. There is no limit to human ingenuity, and I'm confident mankind will have revolutionized the field of
teledildonics.