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The role of conflict processing in multisensory perception: behavioural and electroencephalography evidence.
Philos Trans R Soc Lond B Biol Sci
September 2023
Center for Brain and Cognition, Universitat Pompeu Fabra, 08005 Barcelona, Spain.
To form coherent multisensory perceptual representations, the brain must solve a causal inference problem: to decide if two sensory cues originated from the same event and should be combined, or if they came from different events and should be processed independently. According to current models of multisensory integration, during this process, the integrated (common cause) and segregated (different causes) internal perceptual models are entertained. In the present study, we propose that the causal inference process involves competition between these alternative perceptual models that engages the brain mechanisms of conflict processing.
View Article and Find Full Text PDFAsymmetric visual capture of virtual sound sources in the distance dimension.
Front Neurosci
September 2022
Department of Otolaryngology and Communicative Disorders, Heuser Hearing Institute, University of Louisville, Louisville, KY, United States.
Visual capture describes the tendency of a sound to be mislocalized to the location of a plausible visual target. This effect, also known as the ventriloquist effect, has been extensively studied in humans, but primarily for mismatches in the angular direction between auditory and visual targets. Here, visual capture was examined in the distance dimension using a single visual target (an un-energized loudspeaker) and invisible virtual sound sources presented over headphones.
View Article and Find Full Text PDFThe Effects of Cue Reliability on Crossmodal Recalibration in Adults and Children.
Multisens Res
May 2021
University of Hamburg, Biological Psychology and Neuropsychology, Von-Melle-Park 11, 20146 Hamburg, Germany.
Reliability-based cue combination is a hallmark of multisensory integration, while the role of cue reliability for crossmodal recalibration is less understood. The present study investigated whether visual cue reliability affects audiovisual recalibration in adults and children. Participants had to localize sounds, which were presented either alone or in combination with a spatially discrepant high- or low-reliability visual stimulus.
View Article and Find Full Text PDFSemantic and spatial congruency mould audiovisual integration depending on perceptual awareness.
Sci Rep
May 2021
Centre for Computational Neuroscience and Cognitive Robotics, University of Birmingham, Birmingham, UK.
Information integration is considered a hallmark of human consciousness. Recent research has challenged this tenet by showing multisensory interactions in the absence of awareness. This psychophysics study assessed the impact of spatial and semantic correspondences on audiovisual binding in the presence and absence of visual awareness by combining forward-backward masking with spatial ventriloquism.
View Article and Find Full Text PDFMultisensory Integration Develops Prior to Crossmodal Recalibration.
Curr Biol
May 2020
University of Hamburg, Biological Psychology and Neuropsychology, Von-Melle-Park 11, 20146 Hamburg, Germany.
It has been hypothesized that crossmodal recalibration plays a crucial role for the development of multisensory integration capabilities [1]. To test the developmental trajectory of multisensory integration and crossmodal recalibration, we used a combined ventriloquist/ventriloquist aftereffect paradigm [2] in children aged 5-9 years. The ventriloquist effect (indicating multisensory integration), that is, the shift of auditory localization toward simultaneously presented but spatially discrepant visual stimuli, was larger in children than in adults, which was attributed to a lower auditory localization precision in the children.
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