Roger Bartra Murià (born November 7, 1942 in Mexico City) is a Mexican sociologist and anthropologist, recognized as one of the most important contemporary social scientists of Latin America. Bartra, son of Spanish Civil War refugee writer Agustí Bartra and Anna Murià, is well known for his work on Mexican identity in The Cage of Melancholy. Identity and Metamorphosis in the Mexican Character, his social theory on The Imaginary Networks of Political Power and, recently, for his anthropo-clinical theory of the “exocerebro” (exo-brain), that argues that the brain is partly constructed by its “cultural prostheses”, external socio-cultural elements that complete it.