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The robotic hand mimics the movements of a person's real hand, based on real-time functional magnetic resonance imaging (fMRI) of their brain activity. It marks another landmark in the advance towards prosthetics and computers that can be operating by thought alone.

Subjects lay inside an MRI scanner and were asked to make "rock, paper, scissor" shapes with their right hand. As they did this, the MRI scanner recorded brain activity during the formation of each shape and fed this data to a connected computer. After a short training period, the computer was able to recognise the brain activity associated with each shape and command the robotic appendage do the same.

landmark (noun)

Definition: an anatomical structure used as a point of orientation in locating other structure

towards (adjetive)

Definition :coming soon

each(adverb)

Synonyms: any, every

appendage(noun)
Definition: an adjunct to something larger or more important

ask(verb)
Definition: to make a request for
Synonyms:inquire (of), interrogate, query, question, quiz
Antonyms: answer, reply, respond