Modern science has quite an array of methods trying to localize and analyze brain activity, trying to get down to individual neurons firing: EEG, fMRI, CT, etc. This requires very expensive machines to record data, lots of processing power, trained technicians, etc. At the same time each one of us has a brain which we are trying to study with these methods. I'm interested in knowing is if there has been experiments in which people have developed new "diagnostic" senses or feelings about their own brain activity and these senses correlate with modern scientific equipment. In other words: "when a person feels x, a machine would pick y signal off the patients brain, which can be reproduced across attempts".
Here are a couple examples of "new senses" that I can think of:
- finger magnets, which let a person feel magnetic fields after a few months of implantation
- vibrating ankle bracelets that help a person learn to feel true north
Alternatively, maybe there was a group of notable test subjects who were really good at understanding/expressing their feelings. Did these feelings for test subjects translate into predictable scientific instrument readings?