Show Reference: "The ventriloquist in periphery: Impact of eccentricity-related reliability on audio-visual localization"

The ventriloquist in periphery: Impact of eccentricity-related reliability on audio-visual localization Journal of Vision, Vol. 13, No. 12. (28 October 2013), 20, doi:10.1167/13.12.20 by Geneviève Charbonneau, Marie Véronneau, Colin Boudrias-Fournier, Franco Lepore, Olivier Collignon
@article{charbonneau-et-al-2013,
    abstract = {The relative reliability of separate sensory estimates influences the way they are merged into a unified percept. We investigated how eccentricity-related changes in reliability of auditory and visual stimuli influence their integration across the entire frontal space. First, we surprisingly found that despite a strong decrease in auditory and visual unisensory localization abilities in periphery, the redundancy gain resulting from the congruent presentation of audio-visual targets was not affected by stimuli eccentricity. This result therefore contrasts with the common prediction that a reduction in sensory reliability necessarily induces an enhanced integrative gain. Second, we demonstrate that the visual capture of sounds observed with spatially incongruent audio-visual targets (ventriloquist effect) steadily decreases with eccentricity, paralleling a lowering of the relative reliability of unimodal visual over unimodal auditory stimuli in periphery. Moreover, at all eccentricities, the ventriloquist effect positively correlated with a weighted combination of the spatial resolution obtained in unisensory conditions. These findings support and extend the view that the localization of audio-visual stimuli relies on an optimal combination of auditory and visual information according to their respective spatial reliability. All together, these results evidence that the external spatial coordinates of multisensory events relative to an observer's body (e.g., eyes' or head's position) influence how this information is merged, and therefore determine the perceptual outcome.},
    author = {Charbonneau, Genevi\`{e}ve and V\'{e}ronneau, Marie and Boudrias-Fournier, Colin and Lepore, Franco and Collignon, Olivier},
    day = {28},
    doi = {10.1167/13.12.20},
    issn = {1534-7362},
    journal = {Journal of Vision},
    keywords = {multisensory-integration, optimality, ventriloquism-effect},
    month = oct,
    number = {12},
    pages = {20+},
    pmid = {24167163},
    posted-at = {2013-10-30 13:23:21},
    priority = {2},
    publisher = {Association for Research in Vision and Ophthalmology},
    title = {The ventriloquist in periphery: {I}mpact of eccentricity-related reliability on audio-visual localization},
    url = {http://dx.doi.org/10.1167/13.12.20},
    volume = {13},
    year = {2013}
}

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Visual capture is weaker for stimuli in the periphery where visual localization is less reliable relative to auditor localization than at the center of the visual field.