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• W2800443171 abstract "In instrumental task contexts, incentive manipulations such as posting reward on successful performance usually trigger increased effort, which is signified by effort markers like increased pupil size. Yet, it is not fully clear under which circumstances incentives really promote performance, and which role effort plays therein. In the present study, we compared two schemes of associating reward with a Flanker task, while simultaneously acquiring electroencephalography (EEG) and pupillometry data in order to explore the contribution of effort-related processes. In Experiment 1, reward was administered in a block-based fashion, with series of targets in pure reward and no-reward blocks. The results imply increased sustained effort in the reward blocks, as reflected in particular in sustained increased pupil size. Yet, this was not accompanied by a behavioral benefit, suggesting a failure of translating increased effort into a behavioral pay-off. In Experiment 2, we introduced trial-based cues in order to also promote transient preparatory effort application, which indeed led to a behavioral benefit. Again, we observed a sustained pupil-size increase, but also transient ones. Consistent with this, the EEG data of Experiment 2 indicated increased transient preparatory effort preceding target onset, as well as reward modulations of target processing that arose earlier than in Experiment 1. Jointly, our results indicate that incentive-triggered effort can operate on different time-scales, and that, at least for the current task, its transient (and largely preparatory) form is critical for achieving a behavioral benefit, which may relate to the temporal dynamics of the catecholaminergic systems." @default.
• W2800443171 created "2018-05-17" @default.
• W2800443171 creator A5000009814 @default.
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• W2800443171 date "2019-02-01" @default.
• W2800443171 modified "2023-10-17" @default.
• W2800443171 title "Differential effects of sustained and transient effort triggered by reward – A combined EEG and pupillometry study" @default.
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• W2800443171 doi "https://doi.org/10.1016/j.neuropsychologia.2018.04.032" @default.
• W2800443171 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/29709582" @default.
• W2800443171 hasPublicationYear "2019" @default.
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