resample_responses

  RESAMPLE_RESPONSES - Resample responses for montecarlo simulations

   NEWRESPS = RESAMPLE_RESPONSES(TRIALDATA, MODE, REPS)

   Generates a simulated set of responses.

   TRIALDATA - A matrix size NUM_STIMS x NTRIALS
      If no data is available for a given trail, it can be coded as NaN.
      NaN values will be ignored.

   If MODE==1, then simulated samples are generated with a random number
   generator given the measured mean and variance of each stimulus.

   If MODE==2, then the data are resampled with replacement, as would
   be appropriate for bootstrap analysis.

   REPS - The number of simulated trials to generate.

   Based on code by Mark Mazurek