How is personification used in the raven?

Personification in "The Raven" is used to give human qualities to the raven, creating a sense of foreboding and mystery as the bird perches above the narrator. The raven's presence and actions symbolize the endless torment and despair that the narrator feels after the loss of his beloved Lenore. The personification of the raven adds to the overall dark and eerie atmosphere of the poem.