During a raucous concert given by her favorite band, Death M…

During а rаucоus cоncert given by her fаvоrite band, Death Metalheads, Sylvie becomes less self-aware and finds herself absorbed in the group of mental Death Metalhands fans. She normally keeps a distance from strangers in crowds, but in this state, she finds herself willing to be lifted up by other fans to crowd-surf. Sylvie’s behavior can be explained by the phenomenon of __________.