Causal Inference in Multisensory Heading Estimation

Ksander N de Winkel, Mikhail Katliar and Heinrich H Bülthoff

PLOS ONE, 2017, vol. 12, issue 1, 1-20

Abstract: A large body of research shows that the Central Nervous System (CNS) integrates multisensory information. However, this strategy should only apply to multisensory signals that have a common cause; independent signals should be segregated. Causal Inference (CI) models account for this notion. Surprisingly, previous findings suggested that visual and inertial cues on heading of self-motion are integrated regardless of discrepancy. We hypothesized that CI does occur, but that characteristics of the motion profiles affect multisensory processing. Participants estimated heading of visual-inertial motion stimuli with several different motion profiles and a range of intersensory discrepancies. The results support the hypothesis that judgments of signal causality are included in the heading estimation process. Moreover, the data suggest a decreasing tolerance for discrepancies and an increasing reliance on visual cues for longer duration motions.

Date: 2017
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Persistent link: https://EconPapers.repec.org/RePEc:plo:pone00:0169676

DOI: 10.1371/journal.pone.0169676

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