Comparison of congruence judgment and auditory localization tasks for assessing the spatial limits of visual capture

Adam K. Bosen, Justin T. Fleming, Sarah E. Brown, Paul D. Allen, William E. O’Neill, Gary D. Paige

Research output: Contribution to journalArticlepeer-review

7 Scopus citations


Vision typically has better spatial accuracy and precision than audition and as a result often captures auditory spatial perception when visual and auditory cues are presented together. One determinant of visual capture is the amount of spatial disparity between auditory and visual cues: when disparity is small, visual capture is likely to occur, and when disparity is large, visual capture is unlikely. Previous experiments have used two methods to probe how visual capture varies with spatial disparity. First, congruence judgment assesses perceived unity between cues by having subjects report whether or not auditory and visual targets came from the same location. Second, auditory localization assesses the graded influence of vision on auditory spatial perception by having subjects point to the remembered location of an auditory target presented with a visual target. Previous research has shown that when both tasks are performed concurrently they produce similar measures of visual capture, but this may not hold when tasks are performed independently. Here, subjects alternated between tasks independently across three sessions. A Bayesian inference model of visual capture was used to estimate perceptual parameters for each session, which were compared across tasks. Results demonstrated that the range of audiovisual disparities over which visual capture was likely to occur was narrower in auditory localization than in congruence judgment, which the model indicates was caused by subjects adjusting their prior expectation that targets originated from the same location in a task-dependent manner.

Original languageEnglish (US)
Pages (from-to)455-471
Number of pages17
JournalBiological Cybernetics
Issue number6
StatePublished - Dec 1 2016
Externally publishedYes


  • Audiovisual integration
  • Auditory localization
  • Bayesian inference
  • Visual capture

ASJC Scopus subject areas

  • Biotechnology
  • General Computer Science


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