This seems very promising, although it only measures a small region. Are there other caveats? (EDIT: also requires surgery to insert the electrodes, so its not

This seems very promising, although it only measures a small region. Are there other caveats? (EDIT: also requires surgery to insert the electrodes, so its not as futuristic, but still impressive) There are studies on using fMRIs and machine learning for mind-reading (image and text generation), but fMRIs are very inaccurate, with millions of neurons in each voxel. fMRIs are also very bulky and expensive. This is a light cap which you wear on your head over the course of a month, and it's suggested future versions of the electrodes could possibly "write" (stimulate the neuron they are recording?)