The term was coined by Italian art critic Germano Celant in 1967 .
The term was introduced in Italy during the period of upheaval at the end of the 1960s , when artists were taking a radical stance .
The term was coined by Italian art critic Germano Celant in 1967 and introduced in Italy during the period of upheaval at the end of the 1960s , when artists were taking a radical stance .