1) EEG readings 2) Things in your head 1) Ideas 
[comic strip] Brainwaves is a single-panel cartoon series by Betsy Streeter, a cartoonist and writer who resides in Northern California, USA. `Brainwaves` began in 1993 as single cartoons published by King Features Syndicate through their feature, `The New Breed.` After that, `Brainwaves` began to appear in numerous books and periodicals in...