HAL will be down for maintenance from Friday, June 10 at 4pm through Monday, June 13 at 9am. More information
Skip to Main content Skip to Navigation
Journal articles

Conscious processing of auditory regularities induces a pupil dilation

Abstract : Pupil dilation has been reliably identified as a physiological marker of consciously reportable mental effort. This classical finding raises the question of whether or not pupil dilation could be a specific somatic signature of conscious processing. In order to explore this possibility, we engaged healthy volunteers in the ‘local global’ auditory paradigm we previously designed to disentangle conscious from non-conscious processing of novelty. We discovered that consciously reported violations of global (inter-trials) regularity were associated with a pupil dilation effect both in an active counting task and in a passive attentive task. This pupil dilation effect was detectable both at the group-level and at the individual level. In contrast, unreported violations of this global regularity, as well as unreported violations of local (intra-trial) regularity that do not require conscious access, were not associated with a pupil dilation effect. We replicated these findings in a phonemic version of the ‘local global’. Taken together these results strongly suggest that pupil dilation is a somatic marker of conscious access in the auditory modality, and that it could therefore be used to easily probe conscious processing at the individual level without interfering with participant’s stream of consciousness by questioning him/her.
Document type :
Journal articles
Complete list of metadata

Cited literature [40 references]  Display  Hide  Download

Contributor : Hal Sorbonne Université Gestionnaire Connect in order to contact the contributor
Submitted on : Friday, October 19, 2018 - 11:34:33 AM
Last modification on : Friday, May 20, 2022 - 11:06:49 AM


Publication funded by an institution



Marion Quirins, Clémence Marois, Mélanie Valente, Magali Seassau, Nicolas Weiss, et al.. Conscious processing of auditory regularities induces a pupil dilation. Scientific Reports, Nature Publishing Group, 2018, 8 (1), pp.14819. ⟨10.1038/s41598-018-33202-7⟩. ⟨hal-01899072⟩



Record views


Files downloads