Pupillary dynamics reflect the impact of temporal expectation on detection strategy

Lawlor, Jennifer; Zagala, Agnès; Jamali, Sara; Boubenec, Yves

doi:10.1016/j.isci.2023.106000

Cited by 3 publications

(2 citation statements)

References 62 publications

(116 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Converse to previous studies (Gross & Dobbins, 2021;Murphy et al, 2016;Steinemann et al, 2018), the pupil dilation did not differ significantly between fast and slow decision blocks. However, we found an increase in dilation as a function of decision duration, suggesting that pupil dilation may be partly linked to the urgency signal (Gross & Dobbins, 2021;Lawlor et al, 2023;Murphy et al, 2011Murphy et al, , 2016Steinemann et al, 2018). This idea is supported by the similarity found between pupil dilation and urgency signal as well as the positive correlations that were found between their parameters (see Fig.…”

Section: Pupil Dilation Reflects An Increase In Arousal Related To Ur...supporting

confidence: 80%

Task goals shape the relationship between decision and movement speed

Fievez,

Cos,

Carsten

et al. 2023

Preprint

View full text Add to dashboard Cite

The speed at which we move is linked to the speed at which we decide to make these movements. Yet, the principles guiding such relationship remain unclear: while some studies point towards a shared invigoration process boosting decision and movement speed jointly, others rather indicate a tradeoff between both levels of control, with slower movements accompanying faster decisions. Here, we aimed (1) at further investigating the existence of a shared invigoration process linking decision and movement and (2) at testing the hypothesis that such a link is masked when detrimental to the reward rate. To this aim, we tested 62 subjects who performed the tokens task in two experiments (separate sessions): Experiment 1 evaluated how changing decision speed affects movement speed while Experiment 2 assessed how changing movement speed affects decision speed. In the latter experiment, subjects were either encouraged to favor decision speed (fast decision group) or decision accuracy (slow decision group). Various mixed model analyses revealed a coregulation of decision (urgency) and movement speed in Experiment 1 and in the fast decision group of Experiment 2, but not in the slow decision group despite the fact that these same subjects displayed a coregulation effect in Experiment 1. Altogether, our findings support the idea that coregulation occurs as a default mode but that this form of control is diminished or supplanted by a tradeoff relationship, contingent on reward rate maximization. Drawing from these behavioral observations, we propose that multiple processes contribute to shaping the speed of decisions and movements.

show abstract

Section: Pupil Dilation Reflects An Increase In Arousal Related To Ur...supporting

confidence: 80%

Task goals shape the relationship between decision and movement speed

Fievez,

Cos,

Carsten

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

“…Indeed, preliminary evidence suggests that temporal preparation has similar effects on overall response speed and cognitive control as phasic alertness 55,56 . Furthermore, recent evidence suggests that temporal preparation is accompanied by a gradual increase in pupil size and urgency 57 . This raises the intriguing possibility that alerting cues can cause not only an exogenous, rapid and transient (i.e., phasic) increase in arousal and urgency, but also an endogenous, well-timed, relatively slow increase in arousal and urgency over the course of a predictable cue-target interval.…”

Section: Discussionmentioning

confidence: 99%

Phasic alertness generates urgency and amplifies competition between evidence accumulators

Tromp,

Wurm,

Lucchi

et al. 2024

Preprint

View full text Add to dashboard Cite

Although phasic alertness generally benefits cognitive performance, it often increases the interference caused by distracting information, resulting in impaired decision-making and cognitive control. However, it is unclear why phasic alertness has these negative effects. Here, we present a novel, biologically-informed account, according to which phasic alertness generates an evidence-independent urgency signal. This urgency signal shortens overall response times, but also amplifies competition between evidence accumulators, thus slowing down decision-making and impairing cognitive control. The key assumptions of this account are supported with pupil measurements and electrophysiological data from human decision-makers performing an arrow flanker task. We also show that a computational model of the flanker task that incorporates time-varying urgency can reproduce the behavioral effects of phasic alertness, but only when the evidence accumulators compete with each other through lateral inhibition. Our results reveal a close interplay between dynamic changes in urgency, cognitive control and evidence accumulation.

show abstract