Brain augmentation might sound like science fiction, but the technology is already a well-established field of neuroscience. There are noninvasive forms of tech like EEG, in which sensors use electrical signals to communicate with our brains, and cochlear implants that interface with auditory neurons to restore hearing. Brain-computer interfaces already play a crucial role in treating diseases such as Parkinson’s, epilepsy and ALS, also known as Lou Gehrig’s disease or motor neurone disease.