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True and Perceived Synchrony are Preferentially Associated With Particular Sensory Pairings.

Noel JP, Wallace MT, Orchard-Mills E, Alais D, Van der Burg E - Sci Rep (2015)

Bottom Line: We demonstrate that TBWs correlate within individuals and across multisensory pairings, but PSSs do not.Further, we reveal that while the audiotactile and audiovisual pairings show tightly related TBWs, they also exhibit a differential relationship with respect to true and perceived multisensory synchrony.Thus, audiotactile and audiovisual temporal processing share mechanistic features yet are respectively functionally linked to objective and subjective synchrony.

View Article: PubMed Central - PubMed

Affiliation: Neuroscience Graduate Program, Vanderbilt University Medical Center, Nashville, TN 37240, USA.

ABSTRACT
Perception and behavior are fundamentally shaped by the integration of different sensory modalities into unique multisensory representations, a process governed by spatio-temporal correspondence. Prior work has characterized temporal perception using the point in time at which subjects are most likely to judge multisensory stimuli to be simultaneous (PSS) and the temporal binding window (TBW) over which participants are likely to do so. Here we examine the relationship between the PSS and the TBW within and between individuals, and within and between three sensory combinations: audiovisual, audiotactile and visuotactile. We demonstrate that TBWs correlate within individuals and across multisensory pairings, but PSSs do not. Further, we reveal that while the audiotactile and audiovisual pairings show tightly related TBWs, they also exhibit a differential relationship with respect to true and perceived multisensory synchrony. Thus, audiotactile and audiovisual temporal processing share mechanistic features yet are respectively functionally linked to objective and subjective synchrony.

No MeSH data available.


Relationship between PSS and true and perceived simultaneity as a function of multisensory pairings.Neither objective (top row) nor subjective (bottom row) distance from synchrony was correlated among individuals across multisensory pairings.
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f4: Relationship between PSS and true and perceived simultaneity as a function of multisensory pairings.Neither objective (top row) nor subjective (bottom row) distance from synchrony was correlated among individuals across multisensory pairings.

Mentions: As shown in Fig. 4, none of the combinations of multisensory pairings (AV-AT, VT-AT, and VT-AV) revealed a correlation with distance from objective (true) or subjective (statistical) synchrony (all p > 0.18). These results suggest there is no systematic mapping between a particular individual’s PSS across multiple combinations of sensory modalities. When compared with the strong TBW correlations between multisensory pairings (Fig. 2), which suggest that TBWs are more strongly associated with intrinsic processing characteristics and thus more fixed representational processes, the PSS appears to be more labile and more strongly linked to environmental statistics. Indeed, although recent work has focused on the malleability of the TBW, earlier studies have highlighted the highly plastic nature of the PSS2930.


True and Perceived Synchrony are Preferentially Associated With Particular Sensory Pairings.

Noel JP, Wallace MT, Orchard-Mills E, Alais D, Van der Burg E - Sci Rep (2015)

Relationship between PSS and true and perceived simultaneity as a function of multisensory pairings.Neither objective (top row) nor subjective (bottom row) distance from synchrony was correlated among individuals across multisensory pairings.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4664927&req=5

f4: Relationship between PSS and true and perceived simultaneity as a function of multisensory pairings.Neither objective (top row) nor subjective (bottom row) distance from synchrony was correlated among individuals across multisensory pairings.
Mentions: As shown in Fig. 4, none of the combinations of multisensory pairings (AV-AT, VT-AT, and VT-AV) revealed a correlation with distance from objective (true) or subjective (statistical) synchrony (all p > 0.18). These results suggest there is no systematic mapping between a particular individual’s PSS across multiple combinations of sensory modalities. When compared with the strong TBW correlations between multisensory pairings (Fig. 2), which suggest that TBWs are more strongly associated with intrinsic processing characteristics and thus more fixed representational processes, the PSS appears to be more labile and more strongly linked to environmental statistics. Indeed, although recent work has focused on the malleability of the TBW, earlier studies have highlighted the highly plastic nature of the PSS2930.

Bottom Line: We demonstrate that TBWs correlate within individuals and across multisensory pairings, but PSSs do not.Further, we reveal that while the audiotactile and audiovisual pairings show tightly related TBWs, they also exhibit a differential relationship with respect to true and perceived multisensory synchrony.Thus, audiotactile and audiovisual temporal processing share mechanistic features yet are respectively functionally linked to objective and subjective synchrony.

View Article: PubMed Central - PubMed

Affiliation: Neuroscience Graduate Program, Vanderbilt University Medical Center, Nashville, TN 37240, USA.

ABSTRACT
Perception and behavior are fundamentally shaped by the integration of different sensory modalities into unique multisensory representations, a process governed by spatio-temporal correspondence. Prior work has characterized temporal perception using the point in time at which subjects are most likely to judge multisensory stimuli to be simultaneous (PSS) and the temporal binding window (TBW) over which participants are likely to do so. Here we examine the relationship between the PSS and the TBW within and between individuals, and within and between three sensory combinations: audiovisual, audiotactile and visuotactile. We demonstrate that TBWs correlate within individuals and across multisensory pairings, but PSSs do not. Further, we reveal that while the audiotactile and audiovisual pairings show tightly related TBWs, they also exhibit a differential relationship with respect to true and perceived multisensory synchrony. Thus, audiotactile and audiovisual temporal processing share mechanistic features yet are respectively functionally linked to objective and subjective synchrony.

No MeSH data available.