Neural responses to sensory novelty with and without conscious access

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dc.catalogadordfo
dc.contributor.authorOsorio Galeano, Sergio Andrés
dc.contributor.authorIrani Cereceda, Martín
dc.contributor.authorHerrada, Javiera
dc.contributor.authorAboitiz, Francisco
dc.date.accessioned2024-07-18T19:08:10Z
dc.date.available2024-07-18T19:08:10Z
dc.date.issued2022
dc.description.abstractDetection of novel stimuli that violate statistical regularities in the sensory scene is of paramount importance for the survival of biological organisms. Event-related potentials, phasic increases in pupil size, and evoked changes in oscillatory power have been proposed as markers of sensory novelty detection. However, how conscious access to novelty modulates these different brain responses is not well understood. Here, we studied the neural responses to sensory novelty in the auditory modality with and without conscious access. We identified individual thresholds for conscious auditory discrimination and presented to our participants sequences of tones, where the last stimulus could be another standard, a subthreshold target or a suprathreshold target. Participants were instructed to report whether the last tone of each sequence was the same or different from those preceding it. Results indicate that attentional orientation to behaviorally relevant stimuli and overt decision-making mechanisms, indexed by the P3 event-related response and reaction times, best predict whether a novel stimulus will be consciously accessed. Theta power and pupil size do not predict conscious access to novelty, but instead reflect information maintenance and unexpected sensory uncertainty. These results highlight the interplay between bottom-up and top-down mechanisms and how the brain weights neural responses to novelty and uncertainty during perception and goal-directed behavior.
dc.fechaingreso.objetodigital2024-10-17
dc.fuente.origenWOS
dc.identifier.doi10.1016/j.neuroimage.2022.119516
dc.identifier.eissn1095-9572
dc.identifier.issn1053-8119
dc.identifier.urihttp://doi.org/10.1016/j.neuroimage.2022.119516
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/87124
dc.identifier.wosidWOS:000857128800002
dc.information.autorucEscuela de Medicina; Osorio Galeano Sergio Andres; S/I; 1070621
dc.language.isoen
dc.nota.accesocontenido completo
dc.pagina.final12
dc.pagina.inicio1
dc.revistaNeuroimage
dc.rightsacceso abierto
dc.subjectConscious access
dc.subjectNovelty
dc.subjectUncertainty
dc.subjectTheta oscillations
dc.subjectP3
dc.subjectPupil response
dc.subject.ddc610
dc.subject.deweyMedicina y saludes_ES
dc.subject.ods03 Good health and well-being
dc.subject.odspa03 Salud y bienestar
dc.titleNeural responses to sensory novelty with and without conscious access
dc.typeartículo
dc.volumen262
sipa.codpersvinculados1070621
sipa.trazabilidadWOS;2022-10-11
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