In addition, they invariably give supplementary rewards based on performance.
Also, there were no significant differences in proportion of microstimulated trials or mean absolute disparity between reward conditions (Supplementary file 1).
However, the extent to which our positive stimuli (intended to be nonappetitive and moderate in arousal; see Table S1 in the supplementary materials), relative to reward anticipation, specifically engendered appetitive motivation is not clear.
The data from those 24 starlings for the no-interference and late-interference conditions, which did not include incorrect reward contingincies, is reported in Supplementary Fig. 1.
The reward for this effort is a 6-month supplementary production certificate for the pharmaceutical company.
No significant correlation was observed between behavioral apathy and stake sensitivity (r = −0.293, P = 0.08) or expected reward sensitivity (r = −0.193, P = 0.26) (Supplementary Table 2).
There were no significant differences between the groups in any psychological questionnaire measures of depression, mood, reward sensitivity, impulsivity or personality traits (see online supplementary table S5).
The probabilities of winning the respective reward amounts varied according to slow random walks (see Supplementary Methods for details of stimulus generation; cf. inlay Fig. 1A).
The absence of increased 5% sucrose consumption likely represents a ceiling effect in which a sufficiently strong taste-based reward drove animals to consume maximal amounts of liquid (Supplementary Figure 3B), obscuring the much smaller effect of CNO removal.
Results indicated that supraliminal, but not subliminal, high-value reward cues engaged brain areas involved in reward processing (VS) and task performance (supplementary motor area, motor cortex, and superior temporal gyrus).
Evidence for the former impact includes electrophysiological (the P3 effect)4, 5 and fMRI results7, which indicates that reward prospect regulates activities of the neural substrates, such as the pre-supplementary motor area (pre-SMA), for action inhibition.
