Binaural beats, the perception of which arises in the brain for specific physical stimuli. ... The effect on the brainwaves depends on the difference in frequencies of each tone: for example, if ...
Do people with chromesthesia and tinnitus see the "ringing" caused by tinnitus?
Is recall for an appropriately color coded string of symbols a good measure of level of synesthesia?
The Wiki page on Grapheme–color synesthesia says: ... one recent study has documented a case of synesthesia in which synesthetic associations could be traced back to colored refrigerator magnets. ...