"Whenever the person makes an error, a special pattern of brain activity shows up: a sharp, negative electrical activity that is strongest at the top of the hea

"Whenever the person makes an error, a special pattern of brain activity shows up: a sharp, negative electrical activity that is strongest at the top of the head. Since this electrical activity is negatively charged and associated with making errors, it is called the error-related negativity or ERN'..."A curious thing about the ERN is how quickly it happens after you make an error. So quickly, in fact, that it happens before you are aware of your mistake. The ERN usually occurs no later than 100 ms (1/1,000 of a second) after an error has been made. " https://kids.frontiersin.org/articles/10.3389/frym.2020.00080#KC2 https://kids.frontiersin.org/articles/10.3389/frym.2020.0008... So if I wear one of these, I can get a desklamp that flashes when I make a mistake, it's going to be like a strobe :)