http://www.nytimes.com/2011/05/03/science/03firewalker.html?_r=1
The above is an excellent story which in my view details how through emotional projection (the stronger the bond the more the individual “lets go” and releases into the vicarious experience of watching what another, with whom they’re bonded, is experiencing.) Then, the hearts become synchronized so as to establish a common beat. Emotion wants to move, but given the phenomenon of physical memory, unresolved emotion which is created by resistance to emotional expression, can only be moved by first being triggered, and then by synchronizing with the triggering agent. Otherwise in deference to the inherent nature of emotion, the principle of emotional conductivity, only more unresolved emotion will be acquired thus increasing the individual’s emotional charge and sense of being disconnected (an internal vibration that is unrequited).