Papers by Veronica Forcelli
In Engineering in Medicine and Biology Society (EMBC), 2015, Annual International Conference of the IEEE, Jun 2015
Mediofrontal event-related potential (ERP) components have been extensively reported following pe... more Mediofrontal event-related potential (ERP) components have been extensively reported following performance error or unexpected feedback, and are thought to reflect dopaminergic phasic changes conveyed to medial prefrontal cortex. Recent studies suggest a role for medial prefrontal cortex not only in signaling unexpected feedback but also unexpected timing of expected feedback. However, analyses of this aspect are still scarce. In this study, a task creating a condition of unexpected (anticipated) timing of a predicted feedback was designed and the associated ERP analyzed. Both an aversive and a neutral feedback were considered. ERP analysis evidenced frontocentral ERP component elicited by unexpected, relative to expected, timing of feedback, more significant for aversive than neutral feedback. Cortical generators of this ERP component were estimated using sLORETA source localization method: we found that some regions in the frontal and prefrontal cortex may be responsive to unexpected timing of feedback, to a larger extent in case of aversive than neutral feedback. Obtained results are discussed with respect to findings of previous works. The present study can contribute to inform current theories of performance monitoring in frontal/prefrontal cortex and to drive future investigations.
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Papers by Veronica Forcelli