Behavioral and electrophysiological correlates of cross-modal enhancement for unaware visual events

TitleBehavioral and electrophysiological correlates of cross-modal enhancement for unaware visual events
Publication TypeThesis
Year of Publication2017
AuthorsPápai MS, Soto-Faraco S
Academic DepartmentDepartment of Information and Communication Technologies
Number of Pages222
Date Published10/2017
UniversityUniversitat Pompeu Fabra
CityBarcelona
Thesis TypePhD
KeywordsAttention, awareness, multisensory integration, Perception
Abstract

In everyday life, we are bombarded with information coming simultaneously from different senses. The information is combined in the brain in order to achieve a fast and accurate answer with the least effort possible. Many times, it happens through multisensory integration. However, may multisensory integration occur (automatically) in emergency situations when imperative action is needed, even if the cognitive resources are deployed to other ongoing activities? In order to resolve the query, we capitalized on uninformative, unpredictive, abrupt audiovisual stimulation in binocular rivalry, which let us measure bottom-up multisensory integration in a situation where top-down mechanisms are limited or even absent. The findings of this dissertation challenge previous views about unaware multisensory integration, since a cross-modal behavioral benefit not necessarily derives from bottom-up multisensory integration, instead, first, the individual contribution of the stimuli might offer sufficient explanation for the cross-modal facilitation, second, the putative influence of bottom-up attention cannot be dismissed.

URLhttps://drive.google.com/open?id=1ecl1NZ9n8_wd3EdFn-VofSlDu0QWzLcw