“Crossmodal Binding Rivalry: A “race” for integration between unequal sensory inputs”

Postgraduate Thesis uoadl:1321489 430 Read counter

Διαπανεπιστημιακό ΠΜΣ Βασική και Εφαρμοσμένη Γνωσιακή Επιστήμη
Library of the School of Science
Deposit date:
Κωστάκη Μαρία
Supervisors info:
Αθανάσιος Πρωτόπαπας (Αναπλ. Καθηγητής), Αργυρώ Βατάκη (Ερευνήτρια στο Ινστιτούτο Γνωσιακής Έρευνας και Τεχνολογίας), Κωνσταντίνος Μουτούσης (Αναπλ. Καθηγητής)
Original Title:
“Crossmodal Binding Rivalry: A “race” for integration between unequal sensory inputs”
Translated title:
Ανταγωνισμός στην Σύνδεση Τροπικοτήτων: Ένας «αγώνας» για την ενοποίηση ερεθισμάτων διαφορετικού πλήθους
We have used the classic experimental set-up of the sound induced visual
fission and fusion illusions with multiple temporal configurations and timing
presentations to test whether a rivalry between the unequal number of sensory
inputs could refine the theory of optimal integration for these illusions. This
‘crossmodal binding rivalry’ hypothesis depends on the binding of the first
audiovisual stimulus pair and its temporal proximity with the upcoming
unisensory stimulus and is based on the multisensory integration rules.
According to these rules binding has differential robustness depending on the
sensory inputs and their spatiotemporal relationship within the temporal window
of integration (e.g., binding is more resilient to visual leads as compared to
auditory ones). We, therefore, expect that strong binding of the first
audiovisual pair will lead to strong rivalry with the upcoming unisensory
stimulus and as a result weaker illusory percepts while weak binding will lead
to less intense rivalry and stronger illusory percepts. The data revealed
differential illusory strength across different temporal configurations for the
fission illusion while we also replicated and extended previous findings on the
effect of visual acuity in the strength of the illusion, showing that poor
visual acuity (poor discrimination of two flashes presented) resulted in
enhanced illusory percepts.
Crossmodal binding rivalry, Multisensory integration, Double flash
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