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Article Dans Une Revue iScience Année : 2023

Pupillary dynamics reflect the impact of temporal expectation on detection strategy

Jennifer Lawlor
  • Fonction : Auteur
Sara Jamali
  • Fonction : Auteur
Yves Boubenec

Résumé

Everyday life's perceptual decision-making is informed by experience. In particular, temporal expectation can ease the detection of relevant events in noisy sensory streams. Here, we investigated if humans can extract hidden temporal cues from the occurrences of probabilistic targets and utilize them to inform target detection in a complex acoustic stream. To understand what neural mechanisms implement temporal expectation influence on decision-making, we used pupillometry as a proxy for underlying neuromodulatory activity. We found that participants' detection strategy was influenced by the hidden temporal context and correlated with sound-evoked pupil dilation. A model of urgency fitted on false alarms predicted detection reaction time. Altogether, these findings suggest that temporal expectation informs decision-making and could be implemented through neuromodulatory-mediated urgency signals.

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Dates et versions

hal-03987228 , version 1 (14-02-2023)

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Jennifer Lawlor, Sara Jamali, Yves Boubenec. Pupillary dynamics reflect the impact of temporal expectation on detection strategy. iScience, 2023, 5, ⟨10.1016/j.isci.2023.106000⟩. ⟨hal-03987228⟩
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