2024
Decision-making dynamics are predicted by arousal and uninstructed movements
Hulsey D, Zumwalt K, Mazzucato L, McCormick D, Jaramillo S. Decision-making dynamics are predicted by arousal and uninstructed movements. Cell Reports 2024, 43: 113709. PMID: 38280196, PMCID: PMC11016285, DOI: 10.1016/j.celrep.2024.113709.Peer-Reviewed Original ResearchUninstructed movementsStimulus-reward contingenciesTask-performance statesSensory discrimination taskSensory-guided behaviorOptimal performance statesTask performance dataDiscrimination taskTask performanceObservational measuresArousalBehavioral choicesDecision-making dynamicsMarkov modelOptimal performancePupil diameterPerformance stateSub-optimalTaskExternalitiesComputational modelPerformance
2020
Pupil-linked phasic arousal predicts a reduction of choice bias across species and decision domains
de Gee J, Tsetsos K, Schwabe L, Urai A, McCormick D, McGinley M, Donner T. Pupil-linked phasic arousal predicts a reduction of choice bias across species and decision domains. ELife 2020, 9: e54014. PMID: 32543372, PMCID: PMC7297536, DOI: 10.7554/elife.54014.Peer-Reviewed Original ResearchConceptsPhasic arousalArousal systemMemory-based decisionsSound detection taskDecision-relevant evidenceBrain arousal systemsChoice biasesChoice biasLiberal biasesDecision domainArousalBehavioral effectsBias suppressionBiasesAmbiguous evidenceRapid dilationSuch decisionsMemoryPupilsTaskDecisionsHumansEvidenceGeneral principlesBias