Supplementary Figure 1 Supplementary Figure 1. Neural Firing in the Absence of Behavioral Overexpectation or Omission. A

Behavioral responding (number of magazine entries) during Test. No differences were obtained between the three auditory cues on Test; b. Normalized neural firing during the compounds. No differences in neural firing were obtained between the Overexpectation and Control compounds, whereas firing to the Omission compound was consistently lower compared to Control compound; c. Distribution of difference indices (early-late) for each of the three compounds (Overexpectation, left panel; Omission, middle panel; Control, right panel). All distributions were centered on zero. d. Normalized neural firing to each of the auditory cues on Test. No differences in neural firing were obtained between the cues.