You might be interested in Elizabeth Kiersted's work with Denis Pelli (NYU) about a circumstance where people can see their own "internal" noise, based on Ramac

You might be interested in Elizabeth Kiersted's work with Denis Pelli (NYU) about a circumstance where people can see their own "internal" noise, based on Ramachandran and Gregory (1991)'s phantasm illusion: http://psych.nyu.edu/pelli/docs/kierstead2007intel.pdf http://psych.nyu.edu/pelli/docs/kierstead2007intel.pdf