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Statements such as ‘Some elephants are mammals’ can be accepted as true,
adopting a logical interpretation, or rejected as false, adopting a
pragmatic interpretation through the calculation of a scalar implicature
(SI). In two fMRI experiments, we examined the role of task in SI
processing. In a verification task, which yields diverse responses, items
with SIs showed activations in frontal and prefrontal areas, including the
left anterior MFG. An ROI analysis showed that this area was not activated
in a picture-selection task, which exclusively results in pragmatic
responses, therefore suggesting its involvement in a decision-making
process in less restrictive contexts.