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The capacity to detect synchronous audiovisual events is severely limited: Evidence from mixture modeling.
| Content Provider | Semantic Scholar |
|---|---|
| Author | Olivers, Christian N. L. Awh, Edward Burg, Erik Van Der |
| Copyright Year | 2016 |
| Abstract | Visual attention serves to select salient and relevant events from the visual input. Selective attention to a visual event can be driven by a synchronous sound. Interestingly, recent evidence suggests that a sound can only drive selection of 1 concurrent visual event, suggesting that attentional capacity is much lower for audiovisual events than for purely visual events. Here we corroborate and extend this finding using a mixture modeling technique that distinguishes between the probability and precision of perception. Observers were presented with displays of multiple continuously flickering objects, of which either 1 or 2 were coupled to a single sound. In 2 experiments, we found that the probability of correctly reporting an object was almost halved when the number of synchronized visual objects increased from 1 to 2. Precision, however, was not affected. This indicates that rather than attention being distributed across multiple simultaneous audiovisual events, just 1 of them is singled out for attentional selection. This was not due to a capacity limit for selecting the visual objects per se; pure visual cues elicited a much higher probability of report and in that case there were clear declines in precision at larger set sizes, indicating the concurrent selection of multiple items. The results point toward a dissociation in capacity for visually and aurally cued prioritization of visual objects. (PsycINFO Database Record |
| Starting Page | 2115 |
| Ending Page | 2124 |
| Page Count | 10 |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://awhvogellab.files.wordpress.com/2018/04/olivers-awh-van-der-burg-capacity-for-detecting-synchronous-audiovisual-events-jephpp-2016.pdf |
| PubMed reference number | 27854458v1 |
| Volume Number | 42 |
| Issue Number | 12 |
| Journal | Journal of experimental psychology. Human perception and performance |
| Language | English |
| Access Restriction | Open |
| Subject Keyword | Area striata structure Large Photopsia Physical object observers |
| Content Type | Text |
| Resource Type | Article |
