Multisensory temporal processing in own-body contexts: plausibility of hand ownership does not improve visuo-tactile asynchrony detection
- 231 Downloads
Tracking one’s own body is essential for environmental interaction, and involves integrating multisensory cues with stored information about the body’s typical features. Exactly how multisensory information is integrated in own-body perception is still unclear. For example, Ide and Hidaka (Exp Brain Res 228:43–50, 2013) found that participants made less precise visuo-tactile temporal order judgments (TOJ) when viewing hands in a plausible orientation (upright; typical for one’s own hand) compared to an implausible orientation (rotated 180°). This suggests that viewing one’s own body relaxes the precision for perceived visuo-tactile synchrony. In contrast, visuo-proprioceptive research shows improvements for multisensory temporal perception near one’s own body in asynchrony detection tasks, implying an increase in precision. Hence, it is unclear whether viewed hand orientation generally modulates the ability to detect small asynchronies between vision and touch, or if this effect is specific to TOJ tasks. We investigated whether viewed hand orientation affects detection of visuo-tactile asynchrony. In two experiments, participants viewed model hands in anatomically plausible or implausible orientations. In one experiment, we stroked the hands to induce the rubber hand illusion. Participants were asked to detect short delays (40–280 ms) between vision (an LED flash on the model hand) and touch (a tap to fingertip of the participant’s hidden hand) in a two-interval forced-choice task. Bayesian analyses show that our data provide strong evidence that viewed hand orientation does not affect visuo-tactile asynchrony detection. This study suggests the mechanisms for fine-grained time perception differ between visuo-tactile and visuo-proprioceptive contexts.
KeywordsMultisensory perception Temporal synchrony perception Body representation Body ownership Visuo-tactile interaction Rubber hand illusion
We thank Max Coltheart for comments on Bayesian statistical analyses. RTK is supported by a Macquarie University Research Training Pathway Scholarship. RZ is supported by a Discovery Early Career Research Award from the Australian Research Council (DE140100499).
Compliance with ethical standards
Conflict of interest
The authors declare that they have no conflict of interest.
Informed consent was obtained from all individual participants included in the study.
- Ehrsson HH (2012) The concept of body ownership and its relation to multisensory integration. In: Stein Barry E. (ed) The new handbook of multisensory processing. MIT Press, Cambridge, pp 775–792Google Scholar
- Graziano MSA, Botvinick M (2002) How the brain represents the body: insights from neurophysiology and psychology. In: Prinz W, Hommel B (eds) Common mechanisms in perception and action: attention and performance XIX. Oxford University Press, Oxford, pp 136–157Google Scholar
- Jeffreys H (1939) Theory of probability. Clarendon Press, OxfordGoogle Scholar
- Kandula M, Hofman D, Dijkerman HC (2015) Visuo-tactile interactions are dependent on the predictive value of the visual stimulus. Neuropsychologia 70:358–366. https://doi.org/10.1016/j.neuropsychologia.2014.12.008 CrossRefPubMedGoogle Scholar
- Kingdom FAA, Prins N (2010) Psychophysics: a practical introduction, 1. edn. Elsevier, AmsterdamGoogle Scholar
- Ling X, Li F, Qiao F et al (2016) Fluency expresses implicit knowledge of tonal symmetry. Front Psychol 57. https://doi.org/10.3389/fpsyg.2016.00057
- Morey RD, Rouder JN (2015) BayesFactor: computation of Bayes factors for common designs. R packageGoogle Scholar
- Prins N, Kingdom FAA (2009) Palamedes: MATLAB routines for analyzing psychophysical dataGoogle Scholar
- R Core Team (2014) R: a language and environment for statistical computing. R Foundation for Statistical Computing, Vienna, AustriaGoogle Scholar
- Spence C (2015) The cognitive neuroscience of incorporation: body image adjustment and neuroprosthetics. In: Kansaku K, Cohen LG, Birbaumer N (eds) Clinical Systems Neuroscience. Springer Japan, Tokyo, pp 151–168Google Scholar
- Tsakiris M (2010) My body in the brain: A neurocognitive model of body-ownership. Neuropsychologia 48:703–712. https://doi.org/10.1016/j.neuropsychologia.2009.09.034 CrossRefPubMedGoogle Scholar
- Zopf R, Savage G, Williams MA (2010) Crossmodal congruency measures of lateral distance effects on the rubber hand illusion. Neuropsychologia 48:713–725. https://doi.org/10.1016/j.neuropsychologia.2009.10.028 CrossRefPubMedGoogle Scholar