WordNet (r) 3.0 (2006):

stream of consciousness
    n 1: a literary genre that reveals a character's thoughts and
         feeling as they develop by means of a long soliloquy
    2: the continuous flow of ideas and feelings that constitute an
       individual's conscious experience

Moby Thesaurus II by Grady Ward, 1.0:

19 Moby Thesaurus words for "stream of consciousness":
   association, association by contiguity, association of ideas,
   chain of thought, clang association, controlled association,
   current of thought, flow of thought, free association,
   identification, inmost thoughts, mental linking,
   negative transference, positive transference, secret thoughts,
   synesthesia, thoughts, train of thought, transference