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Congruence-based contextual plausibility modulates cortical activity during vibrotactile perception in virtual multisensory environments

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posted on 2023-11-06, 12:16 authored by Kathleen Kang, Robert Rosenkranz, Kaan Karan, Ercan Altinsoy, Shu-Chen Li

How congruence cues and congruence-based expectations may together shape perception in virtual reality (VR) still need to be unravelled. We linked the concept of plausibility used in VR research with congruence-based modulation by assessing brain responses while participants experienced vehicle riding experiences in VR scenarios. Perceptual plausibility was manipulated by sensory congruence, with multisensory stimulations confirming with common expectations of road scenes being plausible. We hypothesized that plausible scenarios would elicit greater cortical responses. The results showed that: (i) vibrotactile stimulations at expected intensities, given embedded audio-visual information, engaged greater cortical activities in frontal and sensorimotor regions; (ii) weaker plausible stimulations resulted in greater responses in the sensorimotor cortex than stronger but implausible stimulations; (iii) frontal activities under plausible scenarios negatively correlated with plausibility violation costs in the sensorimotor cortex. These results potentially indicate frontal regulation of sensory processing and extend previous evidence of contextual modulation to the tactile sense.

History

Author affiliation

School of Psychology and Vision Science, University of Leicester

Version

  • VoR (Version of Record)

Published in

Communications Biology

Volume

5

Issue

1

Publisher

Springer Science and Business Media LLC

eissn

2399-3642

Copyright date

2022

Available date

2023-11-06

Language

en

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