Ability to record 'speech sounds' we make when thinking. Typically it works by directly recording small muscle movements in the throat. Computer analysis can reconstruct the words we would have spoken. See Subvocal Speech Demo. This is a factual article as opposed to fiction or . It describes the current state of the field and explains expected future developments without or fantasy. This article is too short. You can contribute by expanding it. Write more on the topic, add good links or edit the text.