In E.I, attunement is an unconscious synchrony that guides empathy. Attunement relies heavily on nonverbal communication.[30] Looping is where facial expressions can elicit involuntary behavior, In the research motor mimicry there shows neurons that pick up on facial expressions and communicate with motor neurons responsible for muscles in the face to display the same facial expression. Thus displaying a smile may elicit a micro expression of a smile on someone who is trying to remain neutral in their expression.[31]