sentences:  It is currently thought to be the best method for measuring brain activity, which is why it has been used in multiple research experiments in order to improve the understanding of how doctors and psychologists can identify thoughts.In a 2020 study, AI using implanted electrodes could correctly transcribe a sentence read aloud from a fifty-sentence test set 97% of the time, given 40 minutes of training data per participant.Experts are unsure of how far thought identification can expand, but Marcel Just believed in 2014 that in 3–5 years there will be a machine that is able to read complex thoughts such as 'I hate so-and-so'.