Cited by 109Multisensory perception and integrationTactile and Sensory InteractionsNeuroscience and Music Perception

How prior expectations shape multisensory perception

Gau, Remi, Noppeney, Uta·2016·NeuroImage

Abstract

The brain generates a representation of our environment by integrating signals from a common source, but segregating signals from different sources. This fMRI study investigated how the brain arbitrates between perceptual integration and segregation based on top-down congruency expectations and bottom-up stimulus-bound congruency cues. Participants were presented audiovisual movies of phonologically congruent, incongruent or McGurk syllables that can be integrated into an illusory percept (e.g. "ti" percept for visual «ki» with auditory /pi/). They reported the syllable they perceived. Critically, we manipulated participants' top-down congruency expectations by presenting McGurk stimuli embedded in blocks of congruent or incongruent syllables. Behaviorally, participants were more likely to fuse audiovisual signals into an illusory McGurk percept in congruent than incongruent contexts. At the neural level, the left inferior frontal sulcus (lIFS) showed increased activations for bottom-up incongruent relative to congruent inputs. Moreover, lIFS activations were increased for physically identical McGurk stimuli, when participants segregated the audiovisual signals and reported their auditory percept. Critically, this activation increase for perceptual segregation was amplified when participants expected audiovisually incongruent signals based on prior sensory experience. Collectively, our results demonstrate that the lIFS combines top-down prior (in)congruency expectations with…

Integrity signals

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Crossref · 10.1016/j.neuroimage.2015.09.045

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  • Expectations could modulate reinforcement signals, and if such manipulations affect the reinforcement signal used in calculating prediction errors, it would short-circuit learning by suppressing cue-inconsistent prediction errors.

    “If these manipulations affect the reinforcement signal used in calculating prediction errors, it would short-circuit learning by suppressing cue-inconsistent prediction errors.”

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Authors
Gau, R., & Noppeney, U.
Affiliations
University of Birmingham (GB)
Venue
NeuroImage
Publisher
Elsevier BV
Published
2016-01
Volume
124
Issue
Pt A
Pages
876-886
ISSN
1053-8119 (ISSN-L)
OpenAlex
W1769676696
Cited by
109
References
61
Citations by year
2026: 6 · 2025: 7 · 2024: 10 · 2023: 11 · 2022: 10 · 2021: 16 · 2020: 15 · 2019: 12 · 2018: 8 · 2017: 6 · 2016: 7
FWCI
10.58
Type
journal article
Language
en
Open access
closed
Locations
  • NeuroImage (publishedVersion)
  • PubMed (publishedVersion)
  • Max Planck Digital Library (submittedVersion)
  • University of Birmingham Research Portal (University of Birmingham) (submittedVersion)
  • MPG.PuRe (Max Planck Society) (submittedVersion)
  • OSF Preprints (OSF Preprints) (submittedVersion)
Funders
  • European Research Council (ERC-STG 309349-multsens)
  • Bundesministerium für Bildung und Forschung (01GQ1002)
  • Max-Planck-Gesellschaft
Topics
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Multisensory perception and integration
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Tactile and Sensory Interactions
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neuroscience and Music Perception
Keywords
multisensory integration, perceptual segregation, McGurk effect, audiovisual speech perception, top-down expectations, bottom-up cues, inferior frontal sulcus, illusory perception, audiovisual integration
MeSH terms
Acoustic Stimulation, Adult, Auditory Perception, Cues, Female, Humans, Illusions, Magnetic Resonance Imaging, Male, Middle Aged, Noise, Perception, Photic Stimulation, Psychometrics, Reaction Time, Set, Psychology, Speech Perception, Visual Perception, Prefrontal Cortex, Young Adult

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