Before revision: Ratios of sensation In the 20th century the sensorium became a key part of the theories of Marshall McLuhan, Edmund Carpenter and Walter J. Ong (Carpenter and McLuhan 1960; Ong 1991).
After revision: ,Ratios of sensation In the 20th century the sensorium became a key part of the theories of Marshall McLuhan, Edmund Carpenter and Walter J. Ong (Carpenter and McLuhan 1960; Ong 1991).