Behavioral and Neuropshysiological Correlates of Regret in Rat Decision-Making on a Neuroeconomic Task. Steiner, Redish. Nature Neuroscience 2014


  1. Deals with regret as described in the RL literature as rats make decisions (they make a choice they can’t go back on, but may have gotten something better with a different choice)
  2. “In humans, the orbitofrontal cortex is active during expressions of regret, and humans with damage to the orbitofrontal cortex do not express regret.  In rats and nonhuman primates, both the orbitofrontal cortex and the ventral striatum have been implicated in reward computations.”
  3. In situations of high regret <presumably, the reward of the other option is presented, but not accessible> “… rats looked backwards toward the lost option, cells within orbitofrontal cortex and ventral striatum represented the missed action, rats were more likely to wait for the long delay, and rats rushed through eating the food after that delay.
  4. “Dissapointment is the realization that a realized outcome is due to one’s own mistaken action “
  5. <Didn’t get to finish – posting for spring cleaning>
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