Reinforcing the Weight Attributed to Auditory Space across Saccades: Figure 1.

Collignon, Olivier

doi:10.1523/jneurosci.4089-07.2007

Cited by 1 publication

(1 citation statement)

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“…Such systematic reduction in the ability of the human observer to locate peripheral auditory and visual targets therefore affords a unique ecological opportunity to investigate how the reliability of sensory stimulations impact audio-visual integration across space (Collignon, 2007). Surprisingly, if the impact of the reliability on audio-visual integration has been massively investigated in the central visual field, only a few studies explored this phenomenon throughout the frontal space.…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2013

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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.

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Section: Introductionmentioning

confidence: 99%