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- W4385334118 abstract "Abstract Motivation is crucial for a person to listen under acoustically demanding conditions. Previous work has demonstrated pupil-linked arousal to be sensitive to both, listening demands and motivational state during speech listening. It is less clear how motivational state affects the temporal evolution of the pupil size and its relation to subsequent behavior. Here, we used an auditory gap-detection task (N=33) to study the joint impact of listening demand and motivational state on the pupil-size response and examine its temporal evolution. Task difficulty and a listener’s motivational state were orthogonally manipulated through changes in gap duration and monetary-reward prospect, respectively. We show that participants’ performance decreased with task difficulty, but that reward prospect enhanced performance under hard listening conditions. Pupil size increased with both increased task difficulty and higher reward prospect, and this reward-prospect effect was largest under difficult listening conditions. Moreover, pupil-size time courses differed between detected and missed gaps, suggesting that the pupil response indicates upcoming behavioral performance. Larger pre-gap pupil size was further associated with faster response times on a trial-by-trial within-participant level. Our results reiterate the utility of pupil size as an objective and temporally sensitive measure in audiology. However, such assessments of cognitive-resource recruitment need to consider the individual’s motivational state." @default.
- W4385334118 created "2023-07-29" @default.
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- W4385334118 date "2023-07-28" @default.
- W4385334118 modified "2023-09-24" @default.
- W4385334118 title "Pupil-size sensitivity to listening demand depends on motivational state" @default.
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- W4385334118 doi "https://doi.org/10.1101/2023.07.27.550804" @default.
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