In critical theory, abjection is the state of being cast off and separated from norms and rules, especially on the scale of society and morality. The term has been explored in post-structuralism as that which inherently disturbs conventional identity and cultural concepts. Julia Kristeva explored an influential and formative overview of the concept in her 1980 work Powers of Horror: An Essay on Abjection, where she describes subjective horror (abjection) as the feeling when an individual experiences or is confronted by the sheer experience of what Kristeva calls one's typically repressed "corporeal reality", or an intrusion of the Real in the Symbolic Order.