Diversification of perceptual mechanisms underlying preserved multisensory behaviour in healthy aging

Park H, Kayser C (2020)
bioRxiv.

Preprint | Veröffentlicht | Englisch
 
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Abstract / Bemerkung
The perceptual use of multisensory information apparently changes with age. Yet it remains unclear whether previously reported age-effects arise from changes in the sensory computations by which information is combined, from reduced sensory precision with age, or changes in the belief that different sensory-motor cues are indeed causally linked. To address this question we analysed how healthy young and older adults integrate audio-visual information within (ventriloquist-effect) and between trials (ventriloquist after-effect) using models of Bayesian causal inference. Despite a reduced precision of sensory representations in the elderly, both groups exhibited comparable ventriloquist biases that were reproduced by largely the same sensory computations. While the after-effect bias was also comparable between groups, modelling showed that this was driven by previous sensory information in younger but by the previous response in older participants. This suggests a transition from a sensory- to a behavior driven influence of past experience on subsequent choices with age, possibly related to the reduced sensory precision or memory capacity with age.
Erscheinungsjahr
2020
Zeitschriftentitel
bioRxiv
Page URI
https://pub.uni-bielefeld.de/record/2941213

Zitieren

Park H, Kayser C. Diversification of perceptual mechanisms underlying preserved multisensory behaviour in healthy aging. bioRxiv. 2020.
Park, H., & Kayser, C. (2020). Diversification of perceptual mechanisms underlying preserved multisensory behaviour in healthy aging. bioRxiv
Park, H., and Kayser, C. (2020). Diversification of perceptual mechanisms underlying preserved multisensory behaviour in healthy aging. bioRxiv.
Park, H., & Kayser, C., 2020. Diversification of perceptual mechanisms underlying preserved multisensory behaviour in healthy aging. bioRxiv.
H. Park and C. Kayser, “Diversification of perceptual mechanisms underlying preserved multisensory behaviour in healthy aging”, bioRxiv, 2020.
Park, H., Kayser, C.: Diversification of perceptual mechanisms underlying preserved multisensory behaviour in healthy aging. bioRxiv. (2020).
Park, Hame, and Kayser, Christoph. “Diversification of perceptual mechanisms underlying preserved multisensory behaviour in healthy aging”. bioRxiv (2020).

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bioRxiv: 10.1101/2020.02.12.945949

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