Conditions of risk: L = low, M = mixed, H = high; probabilities of the 2
alternative wins and losses in gamble options 1 and 2 of each trial:
pwin1, ploss1, pwin2, ploss2; monetary outcome for wins and losses in
the gambles 1 and 2: win1, loss1, win2, loss2.
FIGURE CAPTIONS (for files attached)
Figure 1a: Example trial with high ambiguity showing all events and
their timing. The fixation cross (1st frame) was
followed by the option screen (2nd frame). Upon button
press green colour indicated the choice (3rd frame)
and subsequently feedback of the current trial was presented
(4th screen) followed by the sum of all trials
(5th screen) and the fixation cross of the next trial.
Figure 1b: Probability of choosing the higher risk option during the
risk block (upper panel) and the ambiguity block (lower panel) for the
three levels of risk.
Figure 2: Activation in parahippocampus during mixed-risk trials in
comparison to high- and low-risk trials.
Figure 3: Activation of inferior frontal gyrus IFG (BA 47) during
mixed-risk trials with high ambiguity versus averaged high- and low-risk
trials with high ambiguity
Figure 4: Activation of SMA (BA 6) during mixed-risk trials with low
ambiguity versus averaged high- and low-risk trials with low ambiguity
Figure 5: Activation of DLPFC (BA 9) during mixed-risk trials with high
ambiguity versus mixed-risk trials with low ambiguity
Figure 6: Activation of dACC (BA 32) during mixed-risk trials for
parameteric analysis of potential wins in comparison to high- and
low-risk trials
Figure 7: Activation of the insular cortex and the OFC during mixed-risk
trials for the parameteric analysis of potential losses in comparison to
high- and low- risk trials
Figure 8: Activation of the amygdala during mixed-risk trials for trials
with high ambiguity in the parameteric analysis of potential wins versus
mixed-risk trials with low ambiguity.
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