Example 1 High Reliability, Low Threshold

• An experimental subject learns that a cue predicts the future location of a food reward

• The cue is reliable so the ACh threshold is low

• The cue suddenly becomes uncorrelated

• There is a increase in failures to predict the location of the food reward based on the cue

• The NE level rises to exceed the low threshold

• The subject becomes easily discouraged and abandons the cue after just a few trials