'Artistic researcher' Max Haarich demonstrates this in an installation, "Smart Hans", an interactive system that can "guess a number you're thinking of" while actually observing your postural changes.

If you know how it works, you can manipulate it, unmask the real association.

A useful lesson.

People will listen to neuroscience podcasts 18 hours a day and never shut up about optimizing themselves and still willfully forget that the point of making art is not for a computer to generate an image as quickly as possible it is to activate different parts of that brain you supposedly care about